{"id":473,"date":"2025-03-24T08:53:27","date_gmt":"2025-03-23T23:53:27","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=473"},"modified":"2025-03-24T08:53:27","modified_gmt":"2025-03-23T23:53:27","slug":"%e3%80%90%e4%bf%9d%e5%ad%98%e7%89%88%e3%80%91thymeleaf%e3%81%aeif%e6%9d%a1%e4%bb%b6%e5%88%86%e5%b2%90-%e5%ae%8c%e5%85%a8%e3%83%9e%e3%82%b9%e3%82%bf%e3%83%bc%ef%bc%81%e5%ae%9f%e8%b7%b5%e3%81%a7","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=473","title":{"rendered":"\u3010\u4fdd\u5b58\u7248\u3011Thymeleaf\u306eif\u6761\u4ef6\u5206\u5c90 \u5b8c\u5168\u30de\u30b9\u30bf\u30fc\uff01\u5b9f\u8df5\u3067\u4f7f\u3048\u308b15\u306e\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\" id=\"i-0\">Thymeleaf\u306eif\u6761\u4ef6\u5206\u5c90\u3068\u306f\uff1f\u57fa\u790e\u304b\u3089\u89e3\u8aac<\/h1>\n\n\n\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">Thymeleaf\u306eif\u6761\u4ef6\u5206\u5c90\u3068\u306f\uff1f\u57fa\u790e\u304b\u3089\u89e3\u8aac<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">th:if\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u3068\u52d5\u4f5c\u539f\u7406<\/a>      <\/li>      <li>        <a href=\"#i-5\">th:unless\u3067\u5426\u5b9a\u6761\u4ef6\u3092\u7c21\u6f54\u306b\u66f8\u304f\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-8\">Switch\u6587\u3068\u306e\u4f7f\u3044\u5206\u3051\u30dd\u30a4\u30f3\u30c8<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-12\">\u5b9f\u8df5\u3067\u4f7f\u3048\u308b\uff01Thymeleaf\u306eif\u6761\u4ef6\u5206\u5c9015\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-13\">\u8907\u6570\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u9ad8\u5ea6\u306a\u5206\u5c90\u51e6\u7406<\/a>      <\/li>      <li>        <a href=\"#i-17\">Elvis\u30aa\u30da\u30ec\u30fc\u30bf\u3068Null\u30c1\u30a7\u30c3\u30af\u306e\u7d44\u307f\u5408\u308f\u305b\u6280<\/a>      <\/li>      <li>        <a href=\"#i-20\">\u30ea\u30b9\u30c8\u3084\u914d\u5217\u306e\u8981\u7d20\u30c1\u30a7\u30c3\u30af\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-23\">\u30bb\u30c3\u30b7\u30e7\u30f3\u30fb\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u306e\u6761\u4ef6\u5206\u5c90<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-26\">Spring Security\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u6a29\u9650\u5236\u5fa1<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-33\">\u73fe\u5834\u3067\u5f79\u7acb\u3064\uff01if\u6761\u4ef6\u5206\u5c90\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-34\">\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li>        <a href=\"#i-38\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u6761\u4ef6\u5f0f\u306e\u66f8\u304d\u65b9<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-42\">\u4fdd\u5b88\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-46\">\u521d\u5fc3\u8005\u304c\u30cf\u30de\u308a\u3084\u3059\u3044\uff01if\u6761\u4ef6\u5206\u5c90\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-47\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-57\">\u30c7\u30d0\u30c3\u30b0\u306e\u30b3\u30c4\u3068\u52b9\u7387\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-61\">\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3067\u306e\u6761\u4ef6\u5206\u5c90\u306e\u691c\u8a3c\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-66\">\u5b9f\u8df5\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u5b66\u3076\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-67\">\u30e6\u30fc\u30b6\u30fc\u7ba1\u7406\u753b\u9762\u3067\u306e\u6d3b\u7528\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-70\">\u5546\u54c1\u4e00\u89a7\u30fb\u8a73\u7d30\u753b\u9762\u3067\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-73\">\u30d5\u30a9\u30fc\u30e0\u5165\u529b\u753b\u9762\u3067\u306e\u6761\u4ef6\u5206\u5c90\u6d3b\u7528\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-75\">\u307e\u3068\u3081\uff1aThymeleaf\u306eif\u6761\u4ef6\u5206\u5c90\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-76\">\u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8\u6574\u7406<\/a>      <\/li>      <li>        <a href=\"#i-80\">\u5b9f\u88c5\u6642\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>      <\/li>      <li>        <a href=\"#i-81\">\u3053\u3093\u306a\u3068\u304d\u306f\u3053\u3046\u4f7f\u3046\uff01\u5b9f\u8df5\u30ac\u30a4\u30c9<\/a>      <\/li>      <li>        <a href=\"#i-82\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-83\">\u6700\u5f8c\u306b<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-1\">th:if\u306e\u57fa\u672c\u7684\u306a\u66f8\u304d\u65b9\u3068\u52d5\u4f5c\u539f\u7406<\/h2>\n\n\n\n<p>Thymeleaf\u306e<code>th:if<\/code>\u5c5e\u6027\u306f\u3001HTML\u8981\u7d20\u306e\u8868\u793a\/\u975e\u8868\u793a\u3092\u6761\u4ef6\u306b\u3088\u3063\u3066\u5236\u5fa1\u3059\u308b\u6a5f\u80fd\u3067\u3059\u3002\u3053\u306e\u5c5e\u6027\u306f\u3001Spring Boot\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306e\u753b\u9762\u958b\u767a\u306b\u304a\u3044\u3066\u6700\u3082\u983b\u7e41\u306b\u4f7f\u7528\u3055\u308c\u308b\u6a5f\u80fd\u306e1\u3064\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;div th:if=\"${\u6761\u4ef6\u5f0f}\"&gt;\n    \u6761\u4ef6\u304c\u771f\u306e\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u308b\u5185\u5bb9\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-3\">\u8a55\u4fa1\u30eb\u30fc\u30eb<\/h3>\n\n\n\n<p>Thymeleaf\u306f\u4ee5\u4e0b\u306e\u5024\u3092\u300c\u507d\uff08false\uff09\u300d\u3068\u3057\u3066\u8a55\u4fa1\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>false<\/code>\uff08\u30d6\u30fc\u30eb\u5024\uff09<\/li>\n\n\n\n<li>\u6570\u5024\u306e<code>0<\/code><\/li>\n\n\n\n<li><code>null<\/code><\/li>\n\n\n\n<li>\u7a7a\u6587\u5b57\u5217<code>\"\"<\/code><\/li>\n\n\n\n<li>\u7a7a\u914d\u5217<\/li>\n\n\n\n<li>\u7a7a\u306e\u30b3\u30ec\u30af\u30b7\u30e7\u30f3<\/li>\n<\/ul>\n\n\n\n<p>\u305d\u308c\u4ee5\u5916\u306e\u5024\u306f\u5168\u3066\u300c\u771f\uff08true\uff09\u300d\u3068\u3057\u3066\u8a55\u4fa1\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">\u5b9f\u8df5\u7684\u306a\u4f7f\u7528\u4f8b<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u57fa\u672c\u7684\u306a\u5909\u6570\u306e\u5224\u5b9a --&gt;\n&lt;div th:if=\"${user.isActive}\"&gt;\n    \u3053\u306e\u30e6\u30fc\u30b6\u30fc\u306f\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u3059\n&lt;\/div&gt;\n\n&lt;!-- null \u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${user != null}\"&gt;\n    \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u304c\u5b58\u5728\u3057\u307e\u3059\n&lt;\/div&gt;\n\n&lt;!-- \u6570\u5024\u306e\u6bd4\u8f03 --&gt;\n&lt;div th:if=\"${product.stock &gt; 0}\"&gt;\n    \u5728\u5eab\u304c\u3042\u308a\u307e\u3059\n&lt;\/div&gt;\n\n&lt;!-- \u6587\u5b57\u5217\u306e\u6bd4\u8f03 --&gt;\n&lt;div th:if=\"${user.role == 'ADMIN'}\"&gt;\n    \u7ba1\u7406\u8005\u5411\u3051\u30e1\u30cb\u30e5\u30fc\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">th:unless\u3067\u5426\u5b9a\u6761\u4ef6\u3092\u7c21\u6f54\u306b\u66f8\u304f\u65b9\u6cd5<\/h2>\n\n\n\n<p><code>th:unless<\/code>\u306f<code>th:if<\/code>\u306e\u5426\u5b9a\u7248\u3067\u3001\u6761\u4ef6\u304c\u507d\u306e\u5834\u5408\u306b\u8981\u7d20\u3092\u8868\u793a\u3057\u307e\u3059\u3002\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u305f\u3044\u5834\u5408\u306b\u7279\u306b\u6709\u7528\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">th:unless\u306e\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;div th:unless=\"${\u6761\u4ef6\u5f0f}\"&gt;\n    \u6761\u4ef6\u304c\u507d\u306e\u5834\u5408\u306b\u8868\u793a\u3055\u308c\u308b\u5185\u5bb9\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">th:if vs th:unless\u306e\u4f7f\u3044\u5206\u3051<\/h3>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u4f8b\u3067\u3001\u540c\u3058\u6761\u4ef6\u3092\u305d\u308c\u305e\u308c\u306e\u65b9\u6cd5\u3067\u8868\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- th:if\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408 --&gt;\n&lt;div th:if=\"${product.stock == 0}\"&gt;\n    \u5728\u5eab\u5207\u308c\u3067\u3059\n&lt;\/div&gt;\n\n&lt;!-- th:unless\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408 --&gt;\n&lt;div th:unless=\"${product.stock &gt; 0}\"&gt;\n    \u5728\u5eab\u5207\u308c\u3067\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<div class=\"wp-block-sgb-message\"><div class=\"memo sng-shadow-0\" style=\"border-radius:0px;background-color:#fff9e6;color:#ffb36b\"><div class=\"memo_ttl dfont\"><span class=\"sng-box-msg__icon\" style=\"background:#ffb36b\"><i class=\"fas fa-pencil-alt\"><\/i><\/span><div class=\"sng-box-msg__title\">\u4f7f\u3044\u5206\u3051\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/div><\/div><div class=\"sng-box-msg__contents\">\n<ul class=\"wp-block-list\">\n<li>\u5426\u5b9a\u306e\u6761\u4ef6\u304c\u81ea\u7136\u306b\u8aad\u3081\u308b\u5834\u5408\u306f<code>th:unless<\/code>\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u6761\u4ef6\u5f0f\u306e\u5834\u5408\u306f<code>th:if<\/code>\u3092\u4f7f\u7528<\/li>\n\n\n\n<li>\u30c1\u30fc\u30e0\u5185\u3067\u7d71\u4e00\u7684\u306a\u4f7f\u7528\u65b9\u91dd\u3092\u6c7a\u3081\u308b\u3053\u3068\u304c\u91cd\u8981<\/li>\n<\/ul>\n<\/div><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-8\">Switch\u6587\u3068\u306e\u4f7f\u3044\u5206\u3051\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<p>\u6761\u4ef6\u5206\u5c90\u306b\u306f<code>th:if<\/code>\u306e\u4ed6\u306b<code>th:switch<\/code>\/<code>th:case<\/code>\u3082\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u305d\u308c\u305e\u308c\u306e\u7279\u5fb4\u3092\u7406\u89e3\u3057\u3001\u9069\u5207\u306b\u4f7f\u3044\u5206\u3051\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">Switch\u6587\u306e\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;div th:switch=\"${user.role}\"&gt;\n    &lt;p th:case=\"'ADMIN'\"&gt;\u7ba1\u7406\u8005\u3067\u3059&lt;\/p&gt;\n    &lt;p th:case=\"'USER'\"&gt;\u4e00\u822c\u30e6\u30fc\u30b6\u30fc\u3067\u3059&lt;\/p&gt;\n    &lt;p th:case=\"*\"&gt;\u6a29\u9650\u304c\u3042\u308a\u307e\u305b\u3093&lt;\/p&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-10\">\u4f7f\u3044\u5206\u3051\u306e\u6307\u91dd<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>th:if\u3092\u4f7f\u7528\u3059\u308b\u30b1\u30fc\u30b9\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6761\u4ef6\u304c\u72ec\u7acb\u3057\u3066\u3044\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u771f\u507d\u306e\u5224\u5b9a\u304c\u4e3b\u306a\u76ee\u7684\u306e\u5834\u5408<\/li>\n\n\n\n<li>\u8907\u96d1\u306a\u6761\u4ef6\u5f0f\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>th:switch\u3092\u4f7f\u7528\u3059\u308b\u30b1\u30fc\u30b9\uff1a\n<ul class=\"wp-block-list\">\n<li>1\u3064\u306e\u5909\u6570\u306b\u5bfe\u3057\u3066\u8907\u6570\u306e\u5024\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5834\u5408<\/li>\n\n\n\n<li>\u76f8\u4e92\u6392\u4ed6\u7684\u306a\u6761\u4ef6\u5206\u5c90\u306e\u5834\u5408<\/li>\n\n\n\n<li>\u30b3\u30fc\u30c9\u306e\u898b\u901a\u3057\u3092\u3088\u304f\u3057\u305f\u3044\u5834\u5408<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u5b9f\u8df5\u7684\u306a\u4f7f\u3044\u5206\u3051\u4f8b<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- th:if\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b --&gt;\n&lt;div th:if=\"${user.isAdmin()}\"&gt;\n    &lt;button&gt;\u30e6\u30fc\u30b6\u30fc\u7ba1\u7406&lt;\/button&gt;\n&lt;\/div&gt;\n&lt;div th:if=\"${user.canEditPosts()}\"&gt;\n    &lt;button&gt;\u6295\u7a3f\u7de8\u96c6&lt;\/button&gt;\n&lt;\/div&gt;\n\n&lt;!-- th:switch\u306e\u9069\u5207\u306a\u4f7f\u7528\u4f8b --&gt;\n&lt;div th:switch=\"${order.status}\"&gt;\n    &lt;p th:case=\"'PENDING'\"&gt;\u51e6\u7406\u5f85\u3061&lt;\/p&gt;\n    &lt;p th:case=\"'PROCESSING'\"&gt;\u51e6\u7406\u4e2d&lt;\/p&gt;\n    &lt;p th:case=\"'COMPLETED'\"&gt;\u5b8c\u4e86&lt;\/p&gt;\n    &lt;p th:case=\"'CANCELLED'\"&gt;\u30ad\u30e3\u30f3\u30bb\u30eb&lt;\/p&gt;\n    &lt;p th:case=\"*\"&gt;\u4e0d\u660e\u306a\u30b9\u30c6\u30fc\u30bf\u30b9&lt;\/p&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<p>\u3053\u306e\u3088\u3046\u306b\u3001\u4f7f\u7528\u30b7\u30fc\u30f3\u306b\u5fdc\u3058\u3066\u9069\u5207\u306a\u6761\u4ef6\u5206\u5c90\u65b9\u6cd5\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-12\">\u5b9f\u8df5\u3067\u4f7f\u3048\u308b\uff01Thymeleaf\u306eif\u6761\u4ef6\u5206\u5c9015\u306e\u30c6\u30af\u30cb\u30c3\u30af<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">\u8907\u6570\u6761\u4ef6\u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u9ad8\u5ea6\u306a\u5206\u5c90\u51e6\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">1. AND\u6761\u4ef6\u306e\u7d44\u307f\u5408\u308f\u305b<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u8907\u6570\u6761\u4ef6\u306eAND\u7d50\u5408 --&gt;\n&lt;div th:if=\"${user.isActive} and ${user.hasPermission('ADMIN')}\"&gt;\n    \u7ba1\u7406\u8005\u5411\u3051\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;\n\n&lt;!-- \u30cd\u30b9\u30c8\u3055\u308c\u305f\u6761\u4ef6\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${order != null and order.status == 'SHIPPED' and order.trackingNumber != null}\"&gt;\n    \u914d\u9001\u72b6\u6cc1\u3092\u78ba\u8a8d\u3059\u308b\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">2. OR\u6761\u4ef6\u306e\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u8907\u6570\u6761\u4ef6\u306eOR\u7d50\u5408 --&gt;\n&lt;div th:if=\"${user.isAdmin} or ${user.isModerator}\"&gt;\n    \u30b3\u30f3\u30c6\u30f3\u30c4\u7ba1\u7406\u30e1\u30cb\u30e5\u30fc\n&lt;\/div&gt;\n\n&lt;!-- \u8907\u96d1\u306aOR\u6761\u4ef6\u306e\u7d44\u307f\u5408\u308f\u305b --&gt;\n&lt;div th:if=\"${item.isDiscounted} or (${item.stock &amp;lt; 5} and ${item.isPopular})\"&gt;\n    \u6ce8\u76ee\u5546\u54c1\uff01\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">3. \u8907\u5408\u6761\u4ef6\u5f0f\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u6761\u4ef6\u5f0f\u3092\u5909\u6570\u3068\u3057\u3066\u5b9a\u7fa9 --&gt;\n&lt;div th:with=\"isEligible=${user.age &gt;= 20 and user.hasValidId}\"&gt;\n    &lt;div th:if=\"${isEligible}\"&gt;\n        \u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3067\u304d\u307e\u3059\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-17\">Elvis\u30aa\u30da\u30ec\u30fc\u30bf\u3068Null\u30c1\u30a7\u30c3\u30af\u306e\u7d44\u307f\u5408\u308f\u305b\u6280<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">4. Null\u30bb\u30fc\u30d5\u306a\u6761\u4ef6\u5206\u5c90<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Elvis\u30aa\u30da\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u305fnull\u5b89\u5168\u306a\u8868\u793a --&gt;\n&lt;div th:if=\"${user?.premium} ?: false\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u5411\u3051\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;\n\n&lt;!-- \u30cd\u30b9\u30c8\u3055\u308c\u305f\u30d7\u30ed\u30d1\u30c6\u30a3\u306enull\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${order?.customer?.address} != null\"&gt;\n    \u914d\u9001\u5148\u4f4f\u6240\u304c\u767b\u9332\u3055\u308c\u3066\u3044\u307e\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">5. \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u5206\u5c90<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3068\u306e\u7d44\u307f\u5408\u308f\u305b --&gt;\n&lt;div th:with=\"status=${order?.status} ?: 'PENDING'\"&gt;\n    &lt;div th:if=\"${status == 'COMPLETED'}\"&gt;\n        \u6ce8\u6587\u5b8c\u4e86\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-20\">\u30ea\u30b9\u30c8\u3084\u914d\u5217\u306e\u8981\u7d20\u30c1\u30a7\u30c3\u30af\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">6. \u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u306e\u7a7a\u30c1\u30a7\u30c3\u30af<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30ea\u30b9\u30c8\u306e\u5b58\u5728\u30fb\u7a7a\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${not #lists.isEmpty(items)}\"&gt;\n    &lt;ul&gt;\n        &lt;li th:each=\"item : ${items}\" th:text=\"${item.name}\"&gt;\u5546\u54c1\u540d&lt;\/li&gt;\n    &lt;\/ul&gt;\n&lt;\/div&gt;\n\n&lt;!-- \u914d\u5217\u306e\u9577\u3055\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${#arrays.length(selectedOptions) &gt; 0}\"&gt;\n    \u9078\u629e\u3055\u308c\u305f\u30aa\u30d7\u30b7\u30e7\u30f3\u4e00\u89a7\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">7. \u7279\u5b9a\u8981\u7d20\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30ea\u30b9\u30c8\u5185\u306e\u7279\u5b9a\u8981\u7d20\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${#lists.contains(user.roles, 'ADMIN')}\"&gt;\n    \u7ba1\u7406\u8005\u6a29\u9650\u304c\u3042\u308a\u307e\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-23\">\u30bb\u30c3\u30b7\u30e7\u30f3\u30fb\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u306e\u6761\u4ef6\u5206\u5c90<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">8. \u30bb\u30c3\u30b7\u30e7\u30f3\u5909\u6570\u306e\u30c1\u30a7\u30c3\u30af<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30bb\u30c3\u30b7\u30e7\u30f3\u5909\u6570\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${session.containsKey('userId')}\"&gt;\n    \u30ed\u30b0\u30a4\u30f3\u4e2d\u3067\u3059\n&lt;\/div&gt;\n\n&lt;!-- \u30bb\u30c3\u30b7\u30e7\u30f3\u5c5e\u6027\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u5206\u5c90 --&gt;\n&lt;div th:if=\"${session.preferences?.darkMode} ?: false\"&gt;\n    \u30c0\u30fc\u30af\u30e2\u30fc\u30c9\u6709\u52b9\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-25\">9. \u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u5b58\u5728\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${param.containsKey('error')}\"&gt;\n    &lt;div class=\"alert alert-danger\"&gt;\n        \u30ed\u30b0\u30a4\u30f3\u306b\u5931\u6557\u3057\u307e\u3057\u305f\n    &lt;\/div&gt;\n&lt;\/div&gt;\n\n&lt;!-- \u30d1\u30e9\u30e1\u30fc\u30bf\u5024\u306b\u3088\u308b\u5206\u5c90 --&gt;\n&lt;div th:if=\"${param.view != null and param.view[0] == 'detailed'}\"&gt;\n    \u8a73\u7d30\u30d3\u30e5\u30fc\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-26\">Spring Security\u3068\u7d44\u307f\u5408\u308f\u305b\u305f\u6a29\u9650\u5236\u5fa1<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-27\">10. \u8a8d\u8a3c\u72b6\u614b\u306e\u30c1\u30a7\u30c3\u30af<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u8a8d\u8a3c\u6e08\u307f\u30e6\u30fc\u30b6\u30fc\u306e\u30c1\u30a7\u30c3\u30af --&gt;\n&lt;div th:if=\"${#authentication.isAuthenticated()}\"&gt;\n    \u30ed\u30b0\u30a4\u30f3\u4e2d\u306e\u30e6\u30fc\u30b6\u30fc: &lt;span th:text=\"${#authentication.name}\"&gt;username&lt;\/span&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-28\">11. \u30ed\u30fc\u30eb\u30d9\u30fc\u30b9\u306e\u8868\u793a\u5236\u5fa1<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u7279\u5b9a\u30ed\u30fc\u30eb\u306e\u78ba\u8a8d --&gt;\n&lt;div th:if=\"${#authorization.expression('hasRole(''ROLE_ADMIN'')')}\"&gt;\n    &lt;a href=\"\/admin\/dashboard\"&gt;\u7ba1\u7406\u753b\u9762\u3078&lt;\/a&gt;\n&lt;\/div&gt;\n\n&lt;!-- \u8907\u6570\u30ed\u30fc\u30eb\u306e\u7d44\u307f\u5408\u308f\u305b --&gt;\n&lt;div th:if=\"${#authorization.expression('hasAnyRole(''ROLE_ADMIN'', ''ROLE_MANAGER'')')}\"&gt;\n    &lt;button&gt;\u9ad8\u5ea6\u306a\u8a2d\u5b9a&lt;\/button&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-29\">12. \u30ab\u30b9\u30bf\u30e0\u6a29\u9650\u306e\u30c1\u30a7\u30c3\u30af<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30ab\u30b9\u30bf\u30e0\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f0f\u306e\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${#authorization.expression('hasPermission(#id, ''Product'', ''EDIT'')')}\"&gt;\n    &lt;button&gt;\u5546\u54c1\u3092\u7de8\u96c6&lt;\/button&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-30\">13. \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306b\u57fa\u3065\u304f\u7d30\u304b\u306a\u5236\u5fa1<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30d7\u30ea\u30f3\u30b7\u30d1\u30eb\u60c5\u5831\u3092\u4f7f\u7528\u3057\u305f\u6761\u4ef6\u5206\u5c90 --&gt;\n&lt;div th:if=\"${#authentication.principal.department == 'SALES'}\"&gt;\n    &lt;div&gt;\u58f2\u4e0a\u30ec\u30dd\u30fc\u30c8&lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-31\">14. \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u9ad8\u5ea6\u306a\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u306e\u7d44\u307f\u5408\u308f\u305b --&gt;\n&lt;div th:with=\"hasAccess=${#authorization.expression('hasRole(''ADMIN'')') or \n                         (#authorization.expression('hasRole(''USER'')') and ${item.creator.id == #authentication.principal.id})}\"&gt;\n    &lt;div th:if=\"${hasAccess}\"&gt;\n        &lt;button&gt;\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u7de8\u96c6&lt;\/button&gt;\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-32\">15. \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u6a29\u9650\u30a8\u30e9\u30fc\u306e\u9069\u5207\u306a\u8868\u793a --&gt;\n&lt;div th:if=\"${#authorization.expression('!hasRole(''ADMIN'')')}\"&gt;\n    &lt;div class=\"alert alert-warning\"&gt;\n        \u3053\u306e\u64cd\u4f5c\u306b\u306f\u7ba1\u7406\u8005\u6a29\u9650\u304c\u5fc5\u8981\u3067\u3059\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u67d4\u8edf\u3067\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u6761\u4ef6\u5206\u5c90\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-33\">\u73fe\u5834\u3067\u5f79\u7acb\u3064\uff01if\u6761\u4ef6\u5206\u5c90\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-34\">\u53ef\u8aad\u6027\u3092\u9ad8\u3081\u308b\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-35\">1. \u6761\u4ef6\u5f0f\u306e\u62bd\u51fa\u3068\u518d\u5229\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Before: \u8907\u96d1\u306a\u6761\u4ef6\u5f0f\u3092\u76f4\u63a5\u8a18\u8ff0 --&gt;\n&lt;div th:if=\"${user.age &gt;= 20 and user.hasValidId and user.subscriptionStatus == 'ACTIVE'}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;\n\n&lt;!-- After: th:with\u3092\u4f7f\u7528\u3057\u3066\u6761\u4ef6\u3092\u62bd\u51fa --&gt;\n&lt;div th:with=\"canAccessPremium=${user.age &gt;= 20 and user.hasValidId and user.subscriptionStatus == 'ACTIVE'}\"&gt;\n    &lt;div th:if=\"${canAccessPremium}\"&gt;\n        \u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-36\">2. Helper\u95a2\u6570\u306e\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ Controller\u307e\u305f\u306f\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u3067\u5b9a\u7fa9\n@Component\npublic class UserPermissionUtils {\n    public boolean canAccessPremiumContent(User user) {\n        return user.getAge() &gt;= 20 \n            &amp;&amp; user.hasValidId() \n            &amp;&amp; \"ACTIVE\".equals(user.getSubscriptionStatus());\n    }\n}<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Helper\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u7c21\u6f54\u306a\u6761\u4ef6\u5f0f --&gt;\n&lt;div th:if=\"${@userPermissionUtils.canAccessPremiumContent(user)}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-37\">3. \u610f\u56f3\u304c\u660e\u78ba\u306a\u547d\u540d\u898f\u5247<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: \u610f\u56f3\u304c\u4e0d\u660e\u78ba\u306a\u547d\u540d --&gt;\n&lt;div th:if=\"${flag &amp;&amp; status == 1}\"&gt;\n\n&lt;!-- Good: \u610f\u56f3\u304c\u660e\u78ba\u306a\u547d\u540d --&gt;\n&lt;div th:if=\"${isUserVerified &amp;&amp; orderStatus == 'COMPLETED'}\"&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-38\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u6761\u4ef6\u5f0f\u306e\u66f8\u304d\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-39\">1. \u6761\u4ef6\u5f0f\u306e\u8a55\u4fa1\u9806\u5e8f\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: \u91cd\u3044\u51e6\u7406\u304c\u5148\u306b\u8a55\u4fa1\u3055\u308c\u308b --&gt;\n&lt;div th:if=\"${heavyDatabaseOperation() and simpleCheck}\"&gt;\n\n&lt;!-- Good: \u8efd\u3044\u51e6\u7406\u3092\u5148\u306b\u8a55\u4fa1 --&gt;\n&lt;div th:if=\"${simpleCheck and heavyDatabaseOperation()}\"&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-40\">2. \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ Controller\u3067\u6761\u4ef6\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\n@ModelAttribute(\"commonConditions\")\npublic Map&lt;String, Boolean&gt; prepareCommonConditions() {\n    Map&lt;String, Boolean&gt; conditions = new HashMap&lt;&gt;();\n    conditions.put(\"isSystemAvailable\", systemService.checkAvailability());\n    conditions.put(\"isMaintenanceMode\", configService.isMaintenanceMode());\n    return conditions;\n}<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u6761\u4ef6\u3092\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${commonConditions.isSystemAvailable}\"&gt;\n    \u30b7\u30b9\u30c6\u30e0\u306f\u5229\u7528\u53ef\u80fd\u3067\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-41\">3. \u4e0d\u8981\u306a\u6761\u4ef6\u8a55\u4fa1\u306e\u56de\u907f<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: \u30eb\u30fc\u30d7\u5185\u3067\u6bce\u56de\u6761\u4ef6\u3092\u8a55\u4fa1 --&gt;\n&lt;tr th:each=\"item : ${items}\"&gt;\n    &lt;td th:if=\"${#authorization.expression('hasRole(''ADMIN'')')}\"&gt;\n        \u7ba1\u7406\u8005\u64cd\u4f5c\n    &lt;\/td&gt;\n&lt;\/tr&gt;\n\n&lt;!-- Good: \u30eb\u30fc\u30d7\u306e\u5916\u3067\u4e00\u5ea6\u3060\u3051\u8a55\u4fa1 --&gt;\n&lt;div th:with=\"isAdmin=${#authorization.expression('hasRole(''ADMIN'')')}\"&gt;\n    &lt;tr th:each=\"item : ${items}\"&gt;\n        &lt;td th:if=\"${isAdmin}\"&gt;\n            \u7ba1\u7406\u8005\u64cd\u4f5c\n        &lt;\/td&gt;\n    &lt;\/tr&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-42\">\u4fdd\u5b88\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-43\">1. \u8cac\u52d9\u306e\u5206\u96e2<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u30b5\u30fc\u30d3\u30b9\u5c64\u306b\u5206\u96e2\n@Service\npublic class ContentVisibilityService {\n    public boolean shouldShowPremiumContent(User user) {\n        return user.isPremiumMember() \n            &amp;&amp; !user.isSubscriptionExpired() \n            &amp;&amp; user.hasAccessToFeature(\"premium_content\");\n    }\n}<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u3067\u306f\u30b7\u30f3\u30d7\u30eb\u306a\u547c\u3073\u51fa\u3057\u306e\u307f --&gt;\n&lt;div th:if=\"${@contentVisibilityService.shouldShowPremiumContent(user)}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-44\">2. \u6761\u4ef6\u306e\u30ab\u30d7\u30bb\u30eb\u5316<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u6761\u4ef6\u3092enum\u3067\u7ba1\u7406\npublic enum DisplayCondition {\n    SHOW_PREMIUM_CONTENT {\n        @Override\n        public boolean evaluate(User user) {\n            return user.isPremiumMember();\n        }\n    },\n    SHOW_ADMIN_PANEL {\n        @Override\n        public boolean evaluate(User user) {\n            return user.hasRole(\"ADMIN\");\n        }\n    };\n\n    public abstract boolean evaluate(User user);\n}<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30ab\u30d7\u30bb\u30eb\u5316\u3055\u308c\u305f\u6761\u4ef6\u3092\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${@displayConditionEvaluator.evaluate(DisplayCondition.SHOW_PREMIUM_CONTENT, user)}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-45\">3. \u30c6\u30b9\u30c8\u5bb9\u6613\u6027\u306e\u78ba\u4fdd<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30c6\u30b9\u30c8\u53ef\u80fd\u306a\u8a2d\u8a08\n@Component\npublic class FeatureToggleService {\n    private final ConfigurationService configService;\n\n    public boolean isFeatureEnabled(String featureName, User user) {\n        return configService.isFeatureActive(featureName) \n            &amp;&amp; user.hasAccessTo(featureName);\n    }\n}<\/pre>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30c6\u30b9\u30c8\u53ef\u80fd\u306a\u6761\u4ef6\u5206\u5c90 --&gt;\n&lt;div th:if=\"${@featureToggleService.isFeatureEnabled('new_dashboard', user)}\"&gt;\n    \u65b0\u3057\u3044\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\n&lt;\/div&gt;<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u826f\u3044\u6761\u4ef6\u5206\u5c90\u51e6\u7406\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30c1\u30fc\u30e0\u958b\u767a\u306b\u304a\u3044\u3066\u3082\u4e00\u8cab\u6027\u306e\u3042\u308b\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-46\">\u521d\u5fc3\u8005\u304c\u30cf\u30de\u308a\u3084\u3059\u3044\uff01if\u6761\u4ef6\u5206\u5c90\u306e\u6ce8\u610f\u70b9\u3068\u5bfe\u7b56<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-47\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-48\">1. NullPointerException\u95a2\u9023\u306e\u30a8\u30e9\u30fc<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-49\">\u3088\u304f\u3042\u308b\u554f\u984c<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: Null\u30c1\u30a7\u30c3\u30af\u306a\u3057\u3067\u76f4\u63a5\u30d7\u30ed\u30d1\u30c6\u30a3\u306b\u30a2\u30af\u30bb\u30b9 --&gt;\n&lt;div th:if=\"${user.premium}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u3067\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-50\">\u89e3\u6c7a\u7b56<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Good: Safe Navigation\u6f14\u7b97\u5b50\u3092\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${user?.premium}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u3067\u3059\n&lt;\/div&gt;\n\n&lt;!-- Better: \u5b8c\u5168\u306aNull\u5bfe\u7b56 --&gt;\n&lt;div th:if=\"${user != null and user.premium}\"&gt;\n    \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u3067\u3059\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-51\">2. \u6bd4\u8f03\u6f14\u7b97\u5b50\u306e\u8aa4\u7528<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-52\">\u3088\u304f\u3042\u308b\u554f\u984c<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: \u7b49\u4fa1\u6bd4\u8f03\u306e\u8aa4\u3063\u305f\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${status = 'ACTIVE'}\"&gt;  &lt;!-- \u4ee3\u5165\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u3057\u307e\u3063\u3066\u3044\u308b --&gt;\n    \u30a2\u30af\u30c6\u30a3\u30d6\u30e6\u30fc\u30b6\u30fc\n&lt;\/div&gt;<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-53\">\u89e3\u6c7a\u7b56<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Good: \u6b63\u3057\u3044\u7b49\u4fa1\u6bd4\u8f03 --&gt;\n&lt;div th:if=\"${status == 'ACTIVE'}\"&gt;\n    \u30a2\u30af\u30c6\u30a3\u30d6\u30e6\u30fc\u30b6\u30fc\n&lt;\/div&gt;\n\n&lt;!-- Better: \u6587\u5b57\u5217\u6bd4\u8f03\u306e\u5834\u5408\u306fequals\u3092\u4f7f\u7528 --&gt;\n&lt;div th:if=\"${#strings.equals(status, 'ACTIVE')}\"&gt;\n    \u30a2\u30af\u30c6\u30a3\u30d6\u30e6\u30fc\u30b6\u30fc\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-54\">3. \u30b9\u30b3\u30fc\u30d7\u306e\u8aa4\u8a8d\u8b58<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-55\">\u3088\u304f\u3042\u308b\u554f\u984c<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Bad: \u30b9\u30b3\u30fc\u30d7\u3092\u660e\u793a\u3057\u3066\u3044\u306a\u3044 --&gt;\n&lt;div th:if=\"${username}\"&gt;\n    \u3088\u3046\u3053\u305d\u3001&lt;span th:text=\"${username}\"&gt;\u30b2\u30b9\u30c8&lt;\/span&gt;\u3055\u3093\n&lt;\/div&gt;<\/pre>\n\n\n\n<h4 class=\"wp-block-heading\" id=\"i-56\">\u89e3\u6c7a\u7b56<\/h4>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- Good: \u30b9\u30b3\u30fc\u30d7\u3092\u660e\u793a\u7684\u306b\u6307\u5b9a --&gt;\n&lt;div th:if=\"${session.username != null}\"&gt;\n    \u3088\u3046\u3053\u305d\u3001&lt;span th:text=\"${session.username}\"&gt;\u30b2\u30b9\u30c8&lt;\/span&gt;\u3055\u3093\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-57\">\u30c7\u30d0\u30c3\u30b0\u306e\u30b3\u30c4\u3068\u52b9\u7387\u7684\u306a\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-58\">1. \u30c7\u30d0\u30c3\u30b0\u60c5\u5831\u306e\u8868\u793a<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u5909\u6570\u306e\u4e2d\u8eab\u3092\u78ba\u8a8d --&gt;\n&lt;div th:text=\"${#vars}\"&gt;&lt;\/div&gt;\n\n&lt;!-- \u7279\u5b9a\u306e\u5909\u6570\u306e\u578b\u3068\u5024\u3092\u78ba\u8a8d --&gt;\n&lt;div th:text=\"${#objects.nullSafe(user, 'null')}\"&gt;&lt;\/div&gt;\n&lt;div th:text=\"${#objects.nullSafe(user?.getClass(), 'null')}\"&gt;&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-59\">2. \u6761\u4ef6\u5f0f\u306e\u6bb5\u968e\u7684\u306a\u691c\u8a3c<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u8907\u96d1\u306a\u6761\u4ef6\u3092\u5206\u89e3\u3057\u3066\u78ba\u8a8d --&gt;\n&lt;div th:with=\"condition1=${user != null}, \n              condition2=${user.age &gt;= 20}, \n              condition3=${user.hasValidSubscription()}\"&gt;\n\n    &lt;div&gt;\u6761\u4ef61: &lt;span th:text=\"${condition1}\"&gt;false&lt;\/span&gt;&lt;\/div&gt;\n    &lt;div&gt;\u6761\u4ef62: &lt;span th:text=\"${condition2}\"&gt;false&lt;\/span&gt;&lt;\/div&gt;\n    &lt;div&gt;\u6761\u4ef63: &lt;span th:text=\"${condition3}\"&gt;false&lt;\/span&gt;&lt;\/div&gt;\n\n    &lt;div th:if=\"${condition1 and condition2 and condition3}\"&gt;\n        \u5168\u3066\u306e\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-60\">3. \u30c7\u30d0\u30c3\u30b0\u30e2\u30fc\u30c9\u306e\u6d3b\u7528<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># application.properties\nspring.thymeleaf.cache=false\nlogging.level.org.thymeleaf=TRACE<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-61\">\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3067\u306e\u6761\u4ef6\u5206\u5c90\u306e\u691c\u8a3c\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-62\">1. \u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u4f5c\u6210<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@Test\npublic void testUserAccessConditions() {\n    User user = new User();\n    user.setAge(25);\n    user.setSubscriptionStatus(\"ACTIVE\");\n\n    ModelAndView modelAndView = new ModelAndView(\"user\/profile\");\n    modelAndView.addObject(\"user\", user);\n\n    String rendered = thymeleafEngine.process(\"user\/profile\", context);\n    assertTrue(rendered.contains(\"\u30d7\u30ec\u30df\u30a2\u30e0\u30b3\u30f3\u30c6\u30f3\u30c4\"));\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-63\">2. \u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u306e\u7db2\u7f85<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@TestFactory\nStream&lt;DynamicTest&gt; testVariousConditions() {\n    return Stream.of(\n        \/\/ \u6b63\u5e38\u7cfb\u30c6\u30b9\u30c8\n        TestCase.of(\"\u901a\u5e38\u30e6\u30fc\u30b6\u30fc\", createNormalUser(), true),\n        TestCase.of(\"\u7ba1\u7406\u8005\u30e6\u30fc\u30b6\u30fc\", createAdminUser(), true),\n        \/\/ \u30a8\u30c3\u30b8\u30b1\u30fc\u30b9\n        TestCase.of(\"null \u30e6\u30fc\u30b6\u30fc\", null, false),\n        TestCase.of(\"\u7121\u52b9\u5316\u30e6\u30fc\u30b6\u30fc\", createDisabledUser(), false)\n    ).map(testCase -&gt; DynamicTest.dynamicTest(\n        testCase.name,\n        () -&gt; assertCondition(testCase.user, testCase.expected)\n    ));\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-64\">3. \u6761\u4ef6\u5206\u5c90\u306e\u30e2\u30c3\u30af\u5316<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">@Test\npublic void testComplexCondition(@Mock UserService userService) {\n    when(userService.isUserEligible(any())).thenReturn(true);\n\n    \/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u306e\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\n    Context context = new Context();\n    context.setVariable(\"userService\", userService);\n\n    String result = templateEngine.process(\"template\", context);\n    assertTrue(result.contains(\"\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u3044\u307e\u3059\"));\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-65\">\u30c7\u30d0\u30c3\u30b0\u6642\u306e\u4e3b\u306a\u30c1\u30a7\u30c3\u30af\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5909\u6570\u306e\u5b58\u5728\u78ba\u8a8d<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30bb\u30c3\u30b7\u30e7\u30f3\u5909\u6570\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3001\u30e2\u30c7\u30eb\u5c5e\u6027\u304c\u671f\u5f85\u901a\u308a\u306b\u5b58\u5728\u3059\u308b\u304b<\/li>\n\n\n\n<li>\u30b9\u30b3\u30fc\u30d7\u306f\u6b63\u3057\u304f\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u578b\u306e\u4e00\u81f4\u78ba\u8a8d<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6bd4\u8f03\u5bfe\u8c61\u306e\u578b\u306f\u4e00\u81f4\u3057\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>\u6697\u9ed9\u306e\u578b\u5909\u63db\u304c\u671f\u5f85\u901a\u308a\u306b\u884c\u308f\u308c\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6761\u4ef6\u5f0f\u306e\u8a55\u4fa1\u9806\u5e8f<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8907\u5408\u6761\u4ef6\u306e\u5834\u5408\u3001\u5404\u90e8\u5206\u304c\u671f\u5f85\u901a\u308a\u306b\u8a55\u4fa1\u3055\u308c\u3066\u3044\u308b\u304b<\/li>\n\n\n\n<li>Short-circuit\u8a55\u4fa1\u304c\u610f\u56f3\u901a\u308a\u306b\u6a5f\u80fd\u3057\u3066\u3044\u308b\u304b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6587\u5b57\u5217\u6bd4\u8f03\u306e\u65b9\u6cd5<\/strong>\n<ul class=\"wp-block-list\">\n<li><code>==<\/code>\u3068<code>equals<\/code>\u306e\u4f7f\u3044\u5206\u3051\u306f\u9069\u5207\u304b<\/li>\n\n\n\n<li>\u5927\u6587\u5b57\u5c0f\u6587\u5b57\u306e\u533a\u5225\u306f\u610f\u56f3\u901a\u308a\u304b<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6ce8\u610f\u70b9\u3092\u610f\u8b58\u3057\u3001\u9069\u5207\u306a\u30c7\u30d0\u30c3\u30b0\u3068\u30c6\u30b9\u30c8\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u3088\u308a\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u6761\u4ef6\u5206\u5c90\u51e6\u7406\u3092\u5b9f\u88c5\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-66\">\u5b9f\u8df5\u7684\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u5b66\u3076\u5fdc\u7528\u30c6\u30af\u30cb\u30c3\u30af<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-67\">\u30e6\u30fc\u30b6\u30fc\u7ba1\u7406\u753b\u9762\u3067\u306e\u6d3b\u7528\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-68\">1. \u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u753b\u9762\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- users\/list.html --&gt;\n&lt;div class=\"user-management\"&gt;\n    &lt;!-- \u7ba1\u7406\u8005\u5411\u3051\u64cd\u4f5c\u30e1\u30cb\u30e5\u30fc --&gt;\n    &lt;div th:if=\"${#authorization.expression('hasRole(''ADMIN'')')}\" class=\"admin-controls\"&gt;\n        &lt;button class=\"btn btn-primary\" onclick=\"location.href='\/users\/new'\"&gt;\u65b0\u898f\u30e6\u30fc\u30b6\u30fc\u767b\u9332&lt;\/button&gt;\n        &lt;button class=\"btn btn-secondary\" onclick=\"exportUserList()\"&gt;\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u51fa\u529b&lt;\/button&gt;\n    &lt;\/div&gt;\n\n    &lt;!-- \u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u30c6\u30fc\u30d6\u30eb --&gt;\n    &lt;table class=\"table\"&gt;\n        &lt;thead&gt;\n            &lt;tr&gt;\n                &lt;th&gt;ID&lt;\/th&gt;\n                &lt;th&gt;\u540d\u524d&lt;\/th&gt;\n                &lt;th&gt;\u30b9\u30c6\u30fc\u30bf\u30b9&lt;\/th&gt;\n                &lt;th th:if=\"${#authorization.expression('hasAnyRole(''ADMIN'', ''MANAGER'')')}\"&gt;\u64cd\u4f5c&lt;\/th&gt;\n            &lt;\/tr&gt;\n        &lt;\/thead&gt;\n        &lt;tbody&gt;\n            &lt;tr th:each=\"user : ${users}\"&gt;\n                &lt;td th:text=\"${user.id}\"&gt;1&lt;\/td&gt;\n                &lt;td&gt;\n                    &lt;!-- \u30d7\u30ec\u30df\u30a2\u30e0\u30e6\u30fc\u30b6\u30fc\u306e\u5834\u5408\u3001\u30a2\u30a4\u30b3\u30f3\u3092\u8868\u793a --&gt;\n                    &lt;i th:if=\"${user.isPremium}\" class=\"fas fa-crown\" title=\"\u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\"&gt;&lt;\/i&gt;\n                    &lt;span th:text=\"${user.name}\"&gt;\u5c71\u7530\u592a\u90ce&lt;\/span&gt;\n                &lt;\/td&gt;\n                &lt;td&gt;\n                    &lt;!-- \u30b9\u30c6\u30fc\u30bf\u30b9\u306b\u5fdc\u3058\u3066\u8868\u793a\u3092\u5909\u66f4 --&gt;\n                    &lt;span th:if=\"${user.status == 'ACTIVE'}\" class=\"badge badge-success\"&gt;\u6709\u52b9&lt;\/span&gt;\n                    &lt;span th:if=\"${user.status == 'SUSPENDED'}\" class=\"badge badge-warning\"&gt;\u505c\u6b62\u4e2d&lt;\/span&gt;\n                    &lt;span th:if=\"${user.status == 'DELETED'}\" class=\"badge badge-danger\"&gt;\u524a\u9664\u6e08&lt;\/span&gt;\n                &lt;\/td&gt;\n                &lt;td th:if=\"${#authorization.expression('hasAnyRole(''ADMIN'', ''MANAGER'')')}\"&gt;\n                    &lt;!-- \u30e6\u30fc\u30b6\u30fc\u30b9\u30c6\u30fc\u30bf\u30b9\u306b\u5fdc\u3058\u305f\u64cd\u4f5c\u30dc\u30bf\u30f3 --&gt;\n                    &lt;div class=\"btn-group\"&gt;\n                        &lt;button th:if=\"${user.status != 'DELETED'}\" \n                                th:onclick=\"'editUser(' + ${user.id} + ')'\"\n                                class=\"btn btn-sm btn-info\"&gt;\u7de8\u96c6&lt;\/button&gt;\n                        &lt;button th:if=\"${user.status == 'ACTIVE'}\" \n                                th:onclick=\"'suspendUser(' + ${user.id} + ')'\"\n                                class=\"btn btn-sm btn-warning\"&gt;\u505c\u6b62&lt;\/button&gt;\n                        &lt;button th:if=\"${user.status == 'SUSPENDED'}\" \n                                th:onclick=\"'reactivateUser(' + ${user.id} + ')'\"\n                                class=\"btn btn-sm btn-success\"&gt;\u518d\u958b&lt;\/button&gt;\n                    &lt;\/div&gt;\n                &lt;\/td&gt;\n            &lt;\/tr&gt;\n            &lt;!-- \u30c7\u30fc\u30bf\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u30e1\u30c3\u30bb\u30fc\u30b8 --&gt;\n            &lt;tr th:if=\"${#lists.isEmpty(users)}\"&gt;\n                &lt;td colspan=\"4\" class=\"text-center\"&gt;\u30e6\u30fc\u30b6\u30fc\u304c\u5b58\u5728\u3057\u307e\u305b\u3093&lt;\/td&gt;\n            &lt;\/tr&gt;\n        &lt;\/tbody&gt;\n    &lt;\/table&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-69\">2. \u30e6\u30fc\u30b6\u30fc\u8a73\u7d30\u753b\u9762\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- users\/detail.html --&gt;\n&lt;div class=\"user-detail\"&gt;\n    &lt;!-- \u30e6\u30fc\u30b6\u30fc\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u30a8\u30e9\u30fc\u8868\u793a --&gt;\n    &lt;div th:if=\"${user == null}\" class=\"alert alert-danger\"&gt;\n        \u6307\u5b9a\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u306f\u5b58\u5728\u3057\u307e\u305b\u3093\u3002\n    &lt;\/div&gt;\n\n    &lt;!-- \u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306e\u8868\u793a --&gt;\n    &lt;div th:if=\"${user != null}\" class=\"user-info\"&gt;\n        &lt;h2&gt;\u30e6\u30fc\u30b6\u30fc\u8a73\u7d30\u60c5\u5831&lt;\/h2&gt;\n\n        &lt;!-- \u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u60c5\u5831 --&gt;\n        &lt;div class=\"profile-section\"&gt;\n            &lt;div class=\"profile-header\"&gt;\n                &lt;!-- \u30d7\u30ec\u30df\u30a2\u30e0\u30b9\u30c6\u30fc\u30bf\u30b9\u30d0\u30c3\u30b8 --&gt;\n                &lt;div th:if=\"${user.isPremium}\" class=\"premium-badge\"&gt;\n                    &lt;span class=\"badge badge-gold\"&gt;Premium&lt;\/span&gt;\n                    &lt;small th:text=\"${'\u6709\u52b9\u671f\u9650: ' + #dates.format(user.premiumExpireDate, 'yyyy\/MM\/dd')}\"&gt;\n                        2024\/12\/31\n                    &lt;\/small&gt;\n                &lt;\/div&gt;\n\n                &lt;!-- \u30a2\u30ab\u30a6\u30f3\u30c8\u30b9\u30c6\u30fc\u30bf\u30b9 --&gt;\n                &lt;div th:switch=\"${user.status}\" class=\"status-indicator\"&gt;\n                    &lt;span th:case=\"'ACTIVE'\" class=\"text-success\"&gt;\u30a2\u30af\u30c6\u30a3\u30d6&lt;\/span&gt;\n                    &lt;span th:case=\"'PENDING'\" class=\"text-warning\"&gt;\u8a8d\u8a3c\u5f85\u3061&lt;\/span&gt;\n                    &lt;span th:case=\"'LOCKED'\" class=\"text-danger\"&gt;\u30ed\u30c3\u30af\u4e2d&lt;\/span&gt;\n                &lt;\/div&gt;\n            &lt;\/div&gt;\n\n            &lt;!-- \u7ba1\u7406\u8005\u5411\u3051\u64cd\u4f5c\u30d1\u30cd\u30eb --&gt;\n            &lt;div th:if=\"${#authorization.expression('hasRole(''ADMIN'')')}\" class=\"admin-panel\"&gt;\n                &lt;div th:if=\"${user.status == 'LOCKED'}\" class=\"alert alert-warning\"&gt;\n                    &lt;p&gt;\u30a2\u30ab\u30a6\u30f3\u30c8\u304c\u30ed\u30c3\u30af\u3055\u308c\u3066\u3044\u307e\u3059\u3002&lt;\/p&gt;\n                    &lt;p th:text=\"${'\u30ed\u30c3\u30af\u7406\u7531: ' + user.lockReason}\"&gt;\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u8a66\u884c&lt;\/p&gt;\n                    &lt;button class=\"btn btn-success\" th:onclick=\"'unlockAccount(' + ${user.id} + ')'\"&gt;\n                        \u30ed\u30c3\u30af\u89e3\u9664\n                    &lt;\/button&gt;\n                &lt;\/div&gt;\n\n                &lt;div th:if=\"${user.warningCount &gt; 0}\" class=\"alert alert-info\"&gt;\n                    &lt;p th:text=\"${'\u8b66\u544a\u56de\u6570: ' + user.warningCount + '\u56de'}\"&gt;\u8b66\u544a\u56de\u6570: 2\u56de&lt;\/p&gt;\n                &lt;\/div&gt;\n            &lt;\/div&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-70\">\u5546\u54c1\u4e00\u89a7\u30fb\u8a73\u7d30\u753b\u9762\u3067\u306e\u5b9f\u88c5\u4f8b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-71\">1. \u5546\u54c1\u4e00\u89a7\u753b\u9762<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- products\/list.html --&gt;\n&lt;div class=\"product-listing\"&gt;\n    &lt;!-- \u5546\u54c1\u30d5\u30a3\u30eb\u30bf\u30fc\u30bb\u30af\u30b7\u30e7\u30f3 --&gt;\n    &lt;div class=\"filter-section\" th:with=\"hasFilters=${param.category != null or param.price != null}\"&gt;\n        &lt;div th:if=\"${hasFilters}\" class=\"active-filters\"&gt;\n            &lt;span&gt;\u9069\u7528\u4e2d\u306e\u30d5\u30a3\u30eb\u30bf\u30fc\uff1a&lt;\/span&gt;\n            &lt;span th:if=\"${param.category}\" th:text=\"${param.category[0]}\"&gt;\u30ab\u30c6\u30b4\u30ea\u30fc&lt;\/span&gt;\n            &lt;span th:if=\"${param.price}\" th:text=\"${'\uffe5' + param.price[0] + '\u4ee5\u4e0b'}\"&gt;\u4fa1\u683c&lt;\/span&gt;\n            &lt;a href=\"\/products\" class=\"clear-filters\"&gt;\u30af\u30ea\u30a2&lt;\/a&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n\n    &lt;!-- \u5546\u54c1\u30b0\u30ea\u30c3\u30c9 --&gt;\n    &lt;div class=\"product-grid\"&gt;\n        &lt;div th:each=\"product : ${products}\" class=\"product-card\"&gt;\n            &lt;!-- \u5728\u5eab\u72b6\u6cc1\u306b\u5fdc\u3058\u305f\u30d0\u30c3\u30b8 --&gt;\n            &lt;div class=\"stock-status\"&gt;\n                &lt;span th:if=\"${product.stock == 0}\" class=\"badge badge-danger\"&gt;\u5728\u5eab\u5207\u308c&lt;\/span&gt;\n                &lt;span th:if=\"${product.stock &gt; 0 and product.stock &lt; 5}\" class=\"badge badge-warning\" \n                      th:text=\"${'\u6b8b\u308a' + product.stock + '\u500b'}\"&gt;\u6b8b\u308a3\u500b&lt;\/span&gt;\n            &lt;\/div&gt;\n\n            &lt;!-- \u30bb\u30fc\u30eb\u5546\u54c1\u306e\u8868\u793a --&gt;\n            &lt;div th:if=\"${product.isOnSale}\" class=\"sale-badge\"&gt;\n                &lt;span th:text=\"${product.discountRate + '%OFF'}\"&gt;30%OFF&lt;\/span&gt;\n            &lt;\/div&gt;\n\n            &lt;!-- \u5546\u54c1\u60c5\u5831 --&gt;\n            &lt;img th:src=\"${product.imageUrl}\" alt=\"\u5546\u54c1\u753b\u50cf\" class=\"product-image\"&gt;\n            &lt;div class=\"product-info\"&gt;\n                &lt;h3 th:text=\"${product.name}\"&gt;\u5546\u54c1\u540d&lt;\/h3&gt;\n                &lt;div class=\"price-section\"&gt;\n                    &lt;span th:if=\"${product.isOnSale}\" class=\"original-price\" \n                          th:text=\"${'\uffe5' + product.originalPrice}\"&gt;\uffe51,000&lt;\/span&gt;\n                    &lt;span class=\"current-price\" \n                          th:text=\"${'\uffe5' + product.currentPrice}\"&gt;\uffe5700&lt;\/span&gt;\n                &lt;\/div&gt;\n            &lt;\/div&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-72\">2. \u5546\u54c1\u8a73\u7d30\u753b\u9762<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- products\/detail.html --&gt;\n&lt;div class=\"product-detail\"&gt;\n    &lt;!-- \u5546\u54c1\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408 --&gt;\n    &lt;div th:if=\"${product == null}\" class=\"alert alert-danger\"&gt;\n        \u5546\u54c1\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\n    &lt;\/div&gt;\n\n    &lt;!-- \u5546\u54c1\u60c5\u5831\u8868\u793a --&gt;\n    &lt;div th:if=\"${product != null}\" class=\"product-container\"&gt;\n        &lt;!-- \u5728\u5eab\u72b6\u6cc1\u306b\u3088\u308b\u8cfc\u5165\u30dc\u30bf\u30f3\u306e\u5236\u5fa1 --&gt;\n        &lt;div class=\"purchase-section\"&gt;\n            &lt;div th:if=\"${product.stock &gt; 0}\"&gt;\n                &lt;button class=\"btn btn-primary\" \n                        th:onclick=\"'addToCart(' + ${product.id} + ')'\"&gt;\n                    \u30ab\u30fc\u30c8\u306b\u8ffd\u52a0\n                &lt;\/button&gt;\n                &lt;!-- \u6b8b\u308a\u50c5\u304b\u306a\u5834\u5408\u306e\u8b66\u544a --&gt;\n                &lt;div th:if=\"${product.stock &lt; 5}\" class=\"stock-warning\"&gt;\n                    \u6b8b\u308a\u5728\u5eab\u50c5\u304b\uff01\n                &lt;\/div&gt;\n            &lt;\/div&gt;\n            &lt;div th:unless=\"${product.stock &gt; 0}\" class=\"out-of-stock\"&gt;\n                &lt;button class=\"btn btn-secondary\" disabled&gt;\u5728\u5eab\u5207\u308c&lt;\/button&gt;\n                &lt;!-- \u518d\u5165\u8377\u901a\u77e5\u30dc\u30bf\u30f3 --&gt;\n                &lt;button th:if=\"${user != null}\" \n                        th:onclick=\"'notifyRestock(' + ${product.id} + ')'\"\n                        class=\"btn btn-outline-primary\"&gt;\n                    \u518d\u5165\u8377\u901a\u77e5\u3092\u53d7\u3051\u53d6\u308b\n                &lt;\/button&gt;\n            &lt;\/div&gt;\n        &lt;\/div&gt;\n\n        &lt;!-- \u30bb\u30fc\u30eb\u60c5\u5831\u306e\u8868\u793a --&gt;\n        &lt;div th:if=\"${product.isOnSale}\" class=\"sale-info\"&gt;\n            &lt;div class=\"countdown\" th:with=\"remaining=${product.saleEndTime - currentTime}\"&gt;\n                &lt;span&gt;\u30bb\u30fc\u30eb\u7d42\u4e86\u307e\u3067\uff1a&lt;\/span&gt;\n                &lt;span th:text=\"${remaining + '\u6642\u9593'}\"&gt;24\u6642\u9593&lt;\/span&gt;\n            &lt;\/div&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-73\">\u30d5\u30a9\u30fc\u30e0\u5165\u529b\u753b\u9762\u3067\u306e\u6761\u4ef6\u5206\u5c90\u6d3b\u7528\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-74\">1. \u30e6\u30fc\u30b6\u30fc\u767b\u9332\u30d5\u30a9\u30fc\u30e0<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- users\/register.html --&gt;\n&lt;form th:action=\"@{\/users\/register}\" method=\"post\" class=\"registration-form\"&gt;\n    &lt;!-- \u30d5\u30a9\u30fc\u30e0\u306e\u72b6\u614b\u306b\u5fdc\u3058\u305f\u30e1\u30c3\u30bb\u30fc\u30b8 --&gt;\n    &lt;div th:if=\"${param.error}\" class=\"alert alert-danger\"&gt;\n        \u5165\u529b\u5185\u5bb9\u306b\u30a8\u30e9\u30fc\u304c\u3042\u308a\u307e\u3059\u3002\n    &lt;\/div&gt;\n    &lt;div th:if=\"${param.emailTaken}\" class=\"alert alert-warning\"&gt;\n        \u3053\u306e\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306f\u65e2\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\n    &lt;\/div&gt;\n\n    &lt;!-- \u5165\u529b\u30d5\u30a3\u30fc\u30eb\u30c9 --&gt;\n    &lt;div class=\"form-group\"&gt;\n        &lt;label for=\"userType\"&gt;\u30e6\u30fc\u30b6\u30fc\u30bf\u30a4\u30d7&lt;\/label&gt;\n        &lt;select id=\"userType\" name=\"userType\" class=\"form-control\" \n                th:with=\"selectedType=${param.userType}\"&gt;\n            &lt;option value=\"INDIVIDUAL\"&gt;\u500b\u4eba&lt;\/option&gt;\n            &lt;option value=\"CORPORATE\"&gt;\u6cd5\u4eba&lt;\/option&gt;\n        &lt;\/select&gt;\n    &lt;\/div&gt;\n\n    &lt;!-- \u6cd5\u4eba\u30e6\u30fc\u30b6\u30fc\u5411\u3051\u8ffd\u52a0\u30d5\u30a3\u30fc\u30eb\u30c9 --&gt;\n    &lt;div th:if=\"${param.userType == 'CORPORATE'}\" class=\"corporate-fields\"&gt;\n        &lt;div class=\"form-group\"&gt;\n            &lt;label for=\"companyName\"&gt;\u4f1a\u793e\u540d&lt;\/label&gt;\n            &lt;input type=\"text\" id=\"companyName\" name=\"companyName\" \n                   class=\"form-control\" required&gt;\n        &lt;\/div&gt;\n        &lt;div class=\"form-group\"&gt;\n            &lt;label for=\"department\"&gt;\u90e8\u7f72\u540d&lt;\/label&gt;\n            &lt;input type=\"text\" id=\"department\" name=\"department\" \n                   class=\"form-control\"&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n\n    &lt;!-- \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u30aa\u30d7\u30b7\u30e7\u30f3 --&gt;\n    &lt;div class=\"premium-option\"&gt;\n        &lt;div class=\"form-check\"&gt;\n            &lt;input type=\"checkbox\" id=\"premium\" name=\"premium\" \n                   class=\"form-check-input\"&gt;\n            &lt;label class=\"form-check-label\" for=\"premium\"&gt;\n                \u30d7\u30ec\u30df\u30a2\u30e0\u4f1a\u54e1\u306b\u767b\u9332\u3059\u308b\n            &lt;\/label&gt;\n        &lt;\/div&gt;\n        &lt;!-- \u30d7\u30ec\u30df\u30a2\u30e0\u7279\u5178\u306e\u8868\u793a --&gt;\n        &lt;div th:if=\"${param.premium}\" class=\"premium-benefits\"&gt;\n            &lt;h4&gt;\u30d7\u30ec\u30df\u30a2\u30e0\u7279\u5178&lt;\/h4&gt;\n            &lt;ul&gt;\n                &lt;li&gt;\u914d\u9001\u6599\u7121\u6599&lt;\/li&gt;\n                &lt;li&gt;\u4f1a\u54e1\u9650\u5b9a\u30bb\u30fc\u30eb\u53c2\u52a0\u53ef\u80fd&lt;\/li&gt;\n                &lt;li&gt;\u30dd\u30a4\u30f3\u30c82\u500d&lt;\/li&gt;\n            &lt;\/ul&gt;\n        &lt;\/div&gt;\n    &lt;\/div&gt;\n&lt;\/form&gt;<\/pre>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3050\u306b\u6d3b\u7528\u3067\u304d\u308b\u5f62\u3067\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6761\u4ef6\u5206\u5c90\u3092\u52b9\u679c\u7684\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u3001\u3088\u308a\u76f4\u611f\u7684\u306a\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\" id=\"i-75\">\u307e\u3068\u3081\uff1aThymeleaf\u306eif\u6761\u4ef6\u5206\u5c90\u3092\u4f7f\u3044\u3053\u306a\u3059\u305f\u3081\u306b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-76\">\u672c\u8a18\u4e8b\u306e\u30dd\u30a4\u30f3\u30c8\u6574\u7406<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-77\">1. \u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>th:if<\/code>\u5c5e\u6027\u3092\u4f7f\u7528\u3057\u305f\u57fa\u672c\u7684\u306a\u6761\u4ef6\u5206\u5c90<\/li>\n\n\n\n<li><code>th:unless<\/code>\u306b\u3088\u308b\u5426\u5b9a\u6761\u4ef6\u306e\u8868\u73fe<\/li>\n\n\n\n<li><code>th:switch<\/code>\/<code>th:case<\/code>\u3068\u306e\u4f7f\u3044\u5206\u3051<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-78\">2. \u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u6570\u6761\u4ef6\u306e\u7d44\u307f\u5408\u308f\u305b\u65b9<\/li>\n\n\n\n<li>Null\u30bb\u30fc\u30d5\u306a\u6761\u4ef6\u5206\u5c90\u306e\u5b9f\u88c5<\/li>\n\n\n\n<li>Spring Security\u3068\u306e\u9023\u643a\u306b\u3088\u308b\u6a29\u9650\u5236\u5fa1<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-79\">3. \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u4fdd\u5b88\u6027<\/h3>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">&lt;!-- \u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u4f8b --&gt;\n&lt;div th:with=\"isAdmin=${#authorization.expression('hasRole(''ADMIN'')')}\"&gt;\n    &lt;div th:if=\"${isAdmin}\"&gt;\n        &lt;!-- \u7ba1\u7406\u8005\u5411\u3051\u30b3\u30f3\u30c6\u30f3\u30c4 --&gt;\n    &lt;\/div&gt;\n&lt;\/div&gt;<\/pre>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-80\">\u5b9f\u88c5\u6642\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u53ef\u8aad\u6027\u3092\u91cd\u8996\u3057\u305f\u5b9f\u88c5<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8907\u96d1\u306a\u6761\u4ef6\u306f\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\u306b\u5207\u308a\u51fa\u3059<\/li>\n\n\n\n<li>\u610f\u56f3\u304c\u660e\u78ba\u306a\u547d\u540d\u3092\u5fc3\u304c\u3051\u308b<\/li>\n\n\n\n<li>\u30b3\u30e1\u30f3\u30c8\u3067\u6761\u4ef6\u306e\u610f\u56f3\u3092\u8aac\u660e\u3059\u308b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4fdd\u5b88\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9\u8a2d\u8a08<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306f\u30b5\u30fc\u30d3\u30b9\u5c64\u306b\u5206\u96e2<\/li>\n\n\n\n<li>\u5171\u901a\u306e\u6761\u4ef6\u306f\u30e6\u30fc\u30c6\u30a3\u30ea\u30c6\u30a3\u30af\u30e9\u30b9\u306b\u96c6\u7d04<\/li>\n\n\n\n<li>\u30c6\u30b9\u30c8\u30b3\u30fc\u30c9\u3067\u306e\u691c\u8a3c\u3092\u5fd8\u308c\u305a\u306b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3078\u306e\u914d\u616e<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6a29\u9650\u30c1\u30a7\u30c3\u30af\u306f\u5fc5\u305a\u884c\u3046<\/li>\n\n\n\n<li>\u30bb\u30f3\u30b7\u30c6\u30a3\u30d6\u306a\u60c5\u5831\u306e\u8868\u793a\u5236\u5fa1<\/li>\n\n\n\n<li>XSS\u5bfe\u7b56\u306e\u5b9f\u65bd<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-81\">\u3053\u3093\u306a\u3068\u304d\u306f\u3053\u3046\u4f7f\u3046\uff01\u5b9f\u8df5\u30ac\u30a4\u30c9<\/h2>\n\n\n<div id=\"id-00012fe4-0f62-4f75-9e59-46a6505f7949\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/th><th>\u63a8\u5968\u3055\u308c\u308b\u5b9f\u88c5\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>\u5358\u7d14\u306a\u771f\u507d\u5224\u5b9a<\/td><td><code>th:if=\"${flag}\"<\/code><\/td><\/tr><tr><td>Null\u8003\u616e\u304c\u5fc5\u8981<\/td><td><code>th:if=\"${object?.property}\"<\/code><\/td><\/tr><tr><td>\u8907\u6570\u6761\u4ef6\u306e\u7d44\u307f\u5408\u308f\u305b<\/td><td><code>th:if=\"${condition1 and condition2}\"<\/code><\/td><\/tr><tr><td>\u6a29\u9650\u306b\u3088\u308b\u8868\u793a\u5236\u5fa1<\/td><td><code>th:if=\"${#authorization.expression('hasRole(...)')}\"<\/code><\/td><\/tr><tr><td>\u5426\u5b9a\u6761\u4ef6<\/td><td><code>th:unless=\"${condition}\"<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\" id=\"i-82\">\u6b21\u306e\u30b9\u30c6\u30c3\u30d7<\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30ad\u30eb\u30a2\u30c3\u30d7\u306e\u65b9\u5411\u6027<\/strong>\n<ul class=\"wp-block-list\">\n<li>Thymeleaf\u306e\u4ed6\u306e\u6a5f\u80fd\u3068\u306e\u7d44\u307f\u5408\u308f\u305b<\/li>\n\n\n\n<li>Spring Security\u306eSpEL\u5f0f\u306e\u7fd2\u5f97<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u5b9f\u8df5<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u5b9f\u8df5\u7684\u306a\u5b66\u7fd2\u65b9\u6cd5<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u5c0f\u898f\u6a21\u306a\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u306e\u5b9f\u88c5\u7df4\u7fd2<\/li>\n\n\n\n<li>\u65e2\u5b58\u30b3\u30fc\u30c9\u306e\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0<\/li>\n\n\n\n<li>\u30e6\u30cb\u30c3\u30c8\u30c6\u30b9\u30c8\u306e\u4f5c\u6210<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u3088\u304f\u3042\u308b\u554f\u984c\u3078\u306e\u5bfe\u51e6<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u30c7\u30d0\u30c3\u30b0\u30c4\u30fc\u30eb\u306e\u6d3b\u7528<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u89e3\u6790<\/li>\n\n\n\n<li>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-83\">\u6700\u5f8c\u306b<\/h2>\n\n\n\n<p>Thymeleaf\u306e\u6761\u4ef6\u5206\u5c90\u6a5f\u80fd\u306f\u3001\u9069\u5207\u306b\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u4fdd\u5b88\u6027\u304c\u9ad8\u304f\u3001\u30bb\u30ad\u30e5\u30a2\u3067\u52b9\u7387\u7684\u306aWeb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5b9f\u88c5\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u305f\u57fa\u790e\u77e5\u8b58\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u6d3b\u7528\u3057\u3001\u5b9f\u969b\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u5b9f\u8df5\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u56f0\u3063\u305f\u3068\u304d\u306f\u4ee5\u4e0b\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u8003\u306b\u3057\u3066\u304f\u3060\u3055\u3044\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Thymeleaf\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8<\/li>\n\n\n\n<li>Spring 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