{"id":1328,"date":"2025-03-24T08:52:22","date_gmt":"2025-03-23T23:52:22","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=1328"},"modified":"2025-03-24T08:52:22","modified_gmt":"2025-03-23T23:52:22","slug":"%e3%80%90%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%89%e3%80%91ruby%e3%81%a7json%e3%82%92%e3%83%91%e3%83%bc%e3%82%b9%e3%81%99%e3%82%8b7%e3%81%a4%e3%81%ae%e5%ae%9f%e8%b7%b5%e7%9a%84%e3%81%aa%e3%83%86","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=1328","title":{"rendered":"\u3010\u5b8c\u5168\u30ac\u30a4\u30c9\u3011Ruby\u3067JSON\u3092\u30d1\u30fc\u30b9\u3059\u308b7\u3064\u306e\u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af"},"content":{"rendered":"\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\">Ruby \u306e JSON \u89e3\u6790\u306e\u57fa\u790e\u77e5\u8b58<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">JSON \u3068\u306f\uff1aWeb \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u91cd\u8981\u6027<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">Ruby \u95a2\u9023\u306e JSON \u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6982\u8981<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">\u57fa\u672c\u7684\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">require \u2018json\u2019\u306e\u4f7f\u3044\u65b9\u3068\u57fa\u672c\u69cb\u6587<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-5\">JSON.parse\u30e1\u30bd\u30c3\u30c9\u306e\u8a73\u7d30\u306a\u4f7f\u7528\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-6\">\u5b9f\u8df5\u7684\u306a JSON \u30d1\u30fc\u30b9\u30c6\u30af\u30cb\u30c3\u30af\u96c6<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-7\">\u5927\u898f\u6a21\u306a JSON \u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/a>      <\/li>      <li>        <a href=\"#i-8\">\u30cd\u30b9\u30c8\u5316\u3055\u308c\u305f JSON \u30c7\u30fc\u30bf\u306e\u6b63\u3057\u3044\u53d6\u308a\u6271\u3044<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">\u65e5\u672c\u8a9e\u3092\u542b\u3080JSON\u30c7\u30fc\u30bf\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u5bfe\u5fdc<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u3088\u304f\u3042\u308bJSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-12\">\u4f8b\u5916\u51e6\u7406\u3092\u4f7f\u3063\u305f\u5b89\u5b9a\u306a\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-13\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-14\">JSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-15\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u91cd\u8996\u3059\u308b\u305f\u3081\u306e\u5b9f\u88c5\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-16\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u6ce8\u610f\u70b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-17\">\u5b89\u5168\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-18\">\u4e00\u822c\u7684\u306a\u8106\u5f31\u6027\u3068\u5bfe\u7b56\u65b9\u6cd5<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-19\">\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u96c6<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-20\">Web API\u304b\u3089\u306e\u5fdc\u7b54\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-21\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u306eJSON\u6d3b\u7528\u65b9\u6cd5<\/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-0\">Ruby \u306e JSON \u89e3\u6790\u306e\u57fa\u790e\u77e5\u8b58<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">JSON \u3068\u306f\uff1aWeb \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u91cd\u8981\u6027<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSON\u306f\u300cJavaScript Object Notation\u300d\u306e\u7565\u3067\u3001\u30c7\u30fc\u30bf\u4ea4\u63db\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u3068\u3057\u3066\u73fe\u4ee3\u306eWeb\u958b\u767a\u3067\u306f\u4e0d\u53ef\u6b20\u306a\u5b58\u5728\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u7279\u5fb4\u304b\u3089\u3001\u591a\u304f\u306e\u958b\u767a\u8005\u306b\u9078\u3070\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4eba\u9593\u306b\u3068\u3063\u3066\u8aad\u307f\u66f8\u304d\u3057\u3084\u3059\u3044<\/li>\n\n\n\n<li>\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306e\u51e6\u7406\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u8a00\u8a9e\u306b\u4f9d\u5b58\u3057\u306a\u3044<\/li>\n\n\n\n<li>\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u76f4\u611f\u7684\u306b\u8868\u73fe\u3067\u304d\u308b<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f8b\u3048\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u3092\u8868\u3059JSON\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f62\u5f0f\u306b\u306a\u308a\u307e\u3059\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=\"\">{\n  \"id\": 1,\n  \"name\": \"\u5c71\u7530\u592a\u90ce\",\n  \"email\": \"yamada@example.com\",\n  \"interests\": [\"Ruby\", \"Web\u958b\u767a\", \"API\u8a2d\u8a08\"],\n  \"address\": {\n    \"city\": \"\u6771\u4eac\",\n    \"prefecture\": \"\u6771\u4eac\u90fd\"\n  }\n}<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">Ruby \u95a2\u9023\u306e JSON \u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u6982\u8981<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ruby\u3067\u306f\u3001JSON\u3092\u6271\u3046\u305f\u3081\u306e\u4e3b\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea <code>json<\/code><\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Ruby 1.9\u4ee5\u964d\u306b\u6a19\u6e96\u642d\u8f09<\/li>\n\n\n\n<li>\u57fa\u672c\u7684\u306aJSON\u51e6\u7406\u306b\u5fc5\u8981\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b<\/li>\n\n\n\n<li>\u6700\u3082\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u30e9\u30a4\u30d6\u30e9\u30ea<\/li>\n<\/ul>\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=\"\">require 'json'  # \u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong><code>oj<\/code> (Optimized JSON)<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\u8a00\u8a9e\u3067\u5b9f\u88c5\u3055\u308c\u305f\u9ad8\u901f\u306aJSON\u30d1\u30fc\u30b5\u30fc<\/li>\n\n\n\n<li>\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3088\u308a\u9ad8\u901f\u306a\u51e6\u7406\u304c\u53ef\u80fd<\/li>\n\n\n\n<li>\u3088\u308a\u591a\u304f\u306e\u6a5f\u80fd\u3068\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b<\/li>\n<\/ul>\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=\"\">gem 'oj'  # Gemfile\u306b\u8ffd\u52a0\nrequire 'oj'  # \u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong><code>multi_json<\/code><\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8907\u6570\u306eJSON\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u62bd\u8c61\u5316<\/li>\n\n\n\n<li>\u6700\u9069\u306aJSON\u30d1\u30fc\u30b5\u30fc\u3092\u81ea\u52d5\u9078\u629e<\/li>\n\n\n\n<li>\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3088\u304f\u4f7f\u7528<\/li>\n<\/ul>\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=\"\">gem 'multi_json'  # Gemfile\u306b\u8ffd\u52a0\nrequire 'multi_json'  # \u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5404\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u7279\u5fb4\u6bd4\u8f03\uff1a<\/p>\n\n\n<div id=\"id-8d4cdda0-3a23-4c94-88f0-4aad619714b0\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30e9\u30a4\u30d6\u30e9\u30ea<\/th><th>\u901f\u5ea6<\/th><th>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/th><th>\u6a5f\u80fd\u306e\u8c4a\u5bcc\u3055<\/th><th>\u5c0e\u5165\u306e\u5bb9\u6613\u3055<\/th><\/tr><\/thead><tbody><tr><td>json\uff08\u6a19\u6e96\uff09<\/td><td>\u666e\u901a<\/td><td>\u5c11<\/td><td>\u57fa\u672c\u7684<\/td><td>\u6700\u3082\u7c21\u5358<\/td><\/tr><tr><td>oj<\/td><td>\u9ad8\u901f<\/td><td>\u4e2d<\/td><td>\u8c4a\u5bcc<\/td><td>\u8981\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/td><\/tr><tr><td>multi_json<\/td><td>\u53ef\u5909<\/td><td>\u4e2d<\/td><td>\u8c4a\u5bcc<\/td><td>\u8981\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">JSON\u306e\u57fa\u672c\u7684\u306a\u30c7\u30fc\u30bf\u578b\u3068Ruby\u306e\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u5bfe\u5fdc\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6570\u5024\u578b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON: \u6574\u6570\u5024\u3001\u6d6e\u52d5\u5c0f\u6570\u70b9\u6570<\/li>\n\n\n\n<li>Ruby: Integer, Float<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5217\u578b<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON: \u201c\u6587\u5b57\u5217\u201d<\/li>\n\n\n\n<li>Ruby: String<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u771f\u507d\u5024<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON: true, false<\/li>\n\n\n\n<li>Ruby: TrueClass, FalseClass<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u914d\u5217<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON: [\u50241, \u50242, \u2026]<\/li>\n\n\n\n<li>Ruby: Array<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>JSON: {\u201c\u30ad\u30fc\u201d: \u5024, \u2026}<\/li>\n\n\n\n<li>Ruby: Hash<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u57fa\u790e\u77e5\u8b58\u3092\u8e0f\u307e\u3048\u308b\u3053\u3068\u3067\u3001\u4ee5\u964d\u306e\u7ae0\u3067\u3088\u308a\u5b9f\u8df5\u7684\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5\u3092\u7406\u89e3\u3057\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\u57fa\u672c\u7684\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">require \u2018json\u2019\u306e\u4f7f\u3044\u65b9\u3068\u57fa\u672c\u69cb\u6587<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ruby\u3067\u306eJSON\u51e6\u7406\u306f\u3001\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u300cjson\u300d\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304b\u3089\u59cb\u307e\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u3092\u793a\u3057\u307e\u3059\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=\"\"># JSON\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f\nrequire 'json'\n\n# \u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9\u306e\u4f8b\njson_string = '{\"name\": \"\u4f50\u85e4\u82b1\u5b50\", \"age\": 25}'\nparsed_data = JSON.parse(json_string)\nputs parsed_data[\"name\"]  # =&gt; \u4f50\u85e4\u82b1\u5b50\nputs parsed_data[\"age\"]   # =&gt; 25<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">require\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f\u78ba\u8a8d<\/strong><\/li>\n<\/ol>\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=\"\"># \u65e2\u306b\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u308b\u304b\u78ba\u8a8d\nif defined?(JSON)\n  puts \"JSON\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u65e2\u306b\u8aad\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\"\nelse\n  require 'json'\n  puts \"JSON\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u307f\u307e\u3057\u305f\"\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d0\u30fc\u30b8\u30e7\u30f3\u78ba\u8a8d<\/strong><\/li>\n<\/ol>\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=\"\"># JSON\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u78ba\u8a8d\nputs JSON::VERSION  # \u73fe\u5728\u4f7f\u7528\u3057\u3066\u3044\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u8868\u793a<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">JSON.parse\u30e1\u30bd\u30c3\u30c9\u306e\u8a73\u7d30\u306a\u4f7f\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSON.parse\u30e1\u30bd\u30c3\u30c9\u306b\u306f\u3001\u69d8\u3005\u306a\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u4f7f\u7528\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u57fa\u672c\u7684\u306a\u30d1\u30fc\u30b9\u51e6\u7406<\/strong><\/li>\n<\/ol>\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=\"\"># \u5358\u7d14\u306a\u6587\u5b57\u5217\u304b\u3089\u306e\u30d1\u30fc\u30b9\njson_string = '{\"id\": 1, \"status\": \"active\"}'\ndata = JSON.parse(json_string)\nputs data[\"id\"]      # =&gt; 1\nputs data[\"status\"]  # =&gt; active<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b7\u30f3\u30dc\u30eb\u30ad\u30fc\u3067\u306e\u30d1\u30fc\u30b9<\/strong><\/li>\n<\/ol>\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=\"\"># \u30ad\u30fc\u3092\u30b7\u30f3\u30dc\u30eb\u3068\u3057\u3066\u53d6\u5f97\ndata = JSON.parse(json_string, symbolize_names: true)\nputs data[:id]      # =&gt; 1\nputs data[:status]  # =&gt; active<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u914d\u5217\u3092\u542b\u3080JSON\u306e\u30d1\u30fc\u30b9<\/strong><\/li>\n<\/ol>\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=\"\"># \u914d\u5217\u3092\u542b\u3080JSON\u30c7\u30fc\u30bf\narray_json = '[\n  {\"id\": 1, \"name\": \"\u7530\u4e2d\"},\n  {\"id\": 2, \"name\": \"\u9234\u6728\"}\n]'\n\nusers = JSON.parse(array_json)\nusers.each do |user|\n  puts \"ID: #{user['id']}, Name: #{user['name']}\"\nend<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30cd\u30b9\u30c8\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u30d1\u30fc\u30b9<\/strong><\/li>\n<\/ol>\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=\"\"># \u30cd\u30b9\u30c8\u3055\u308c\u305fJSON\u30c7\u30fc\u30bf\nnested_json = '{\n  \"user\": {\n    \"profile\": {\n      \"name\": \"\u5c71\u672c\",\n      \"age\": 30,\n      \"hobbies\": [\"\u8aad\u66f8\", \"\u65c5\u884c\"]\n    }\n  }\n}'\n\ndata = JSON.parse(nested_json)\nputs data[\"user\"][\"profile\"][\"name\"]     # =&gt; \u5c71\u672c\nputs data[\"user\"][\"profile\"][\"hobbies\"]  # =&gt; [\"\u8aad\u66f8\", \"\u65c5\u884c\"]<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">JSON.parse\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u4e00\u89a7\uff1a<\/p>\n\n\n<div id=\"id-21c16748-13a6-4ae1-9937-bf73c092f018\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30aa\u30d7\u30b7\u30e7\u30f3<\/th><th>\u8aac\u660e<\/th><th>\u4f7f\u7528\u4f8b<\/th><\/tr><\/thead><tbody><tr><td>symbolize_names: true<\/td><td>\u30ad\u30fc\u3092\u30b7\u30f3\u30dc\u30eb\u3068\u3057\u3066\u6271\u3046<\/td><td>JSON.parse(json, symbolize_names: true)<\/td><\/tr><tr><td>max_nesting: 100<\/td><td>\u30cd\u30b9\u30c8\u306e\u6700\u5927\u6df1\u5ea6\u3092\u6307\u5b9a<\/td><td>JSON.parse(json, max_nesting: 50)<\/td><\/tr><tr><td>allow_nan: true<\/td><td>NaN, Infinity, -Infinity\u3092\u8a31\u53ef<\/td><td>JSON.parse(json, allow_nan: true)<\/td><\/tr><tr><td>create_additions: false<\/td><td>JSON\u62e1\u5f35\u3092\u7121\u52b9\u5316<\/td><td>JSON.parse(json, create_additions: false)<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u88c5\u6642\u306e\u91cd\u8981\u306a\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u306e\u8003\u616e<\/strong><\/li>\n<\/ol>\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=\"\"># UTF-8\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\njson_string.force_encoding('UTF-8')\ndata = JSON.parse(json_string)<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30bd\u30c3\u30c9\u30c1\u30a7\u30fc\u30f3\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\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=\"\"># \u30d1\u30fc\u30b9\u3068\u540c\u6642\u306b\u30c7\u30fc\u30bf\u53d6\u5f97\nuser_name = JSON.parse(json_string)[\"user\"][\"name\"]<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u3088\u3046\u306a\u57fa\u672c\u7684\u306a\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u7406\u89e3\u306f\u3001\u3088\u308a\u8907\u96d1\u306aJSON\u30c7\u30fc\u30bf\u3092\u6271\u3046\u969b\u306e\u57fa\u790e\u3068\u306a\u308a\u307e\u3059\u3002\u6b21\u7ae0\u3067\u306f\u3001\u3088\u308a\u5b9f\u8df5\u7684\u306a\u30d1\u30fc\u30b9\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-6\">\u5b9f\u8df5\u7684\u306a JSON \u30d1\u30fc\u30b9\u30c6\u30af\u30cb\u30c3\u30af\u96c6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-7\">\u5927\u898f\u6a21\u306a JSON \u30d5\u30a1\u30a4\u30eb\u306e\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5927\u898f\u6a21\u306aJSON\u30d5\u30a1\u30a4\u30eb\u3092\u51e6\u7406\u3059\u308b\u969b\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u51e6\u7406\u901f\u5ea6\u3092\u8003\u616e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u52b9\u7387\u7684\u306a\u51e6\u7406\u65b9\u6cd5\u3092\u793a\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\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=\"\">require 'json'\nrequire 'oj'  # \u5927\u898f\u6a21\u30d5\u30a1\u30a4\u30eb\u7528\u306b\u9ad8\u901f\u306aOJ\u3092\u4f7f\u7528\n\n# \u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\u306e\u5b9f\u88c5\ndef process_large_json(file_path)\n  File.open(file_path, 'r') do |file|\n    parser = Oj.load_file(file_path, mode: :compat)\n    parser.each do |record|\n      # 1\u30ec\u30b3\u30fc\u30c9\u305a\u3064\u51e6\u7406\n      yield record if block_given?\n    end\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nprocess_large_json('large_data.json') do |record|\n  puts record['id']\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306b\u3088\u308b\u6700\u9069\u5316<\/strong><\/li>\n<\/ol>\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=\"\">def process_in_chunks(file_path, chunk_size = 1000)\n  records = []\n  File.open(file_path, 'r') do |file|\n    parser = Oj.load_file(file_path, mode: :compat)\n    parser.each_with_index do |record, index|\n      records &lt;&lt; record\n      if records.size &gt;= chunk_size\n        yield records\n        records = []\n      end\n    end\n    yield records unless records.empty?\n  end\nend\n\n# \u30c1\u30e3\u30f3\u30af\u51e6\u7406\u306e\u4f7f\u7528\u4f8b\nprocess_in_chunks('large_data.json') do |chunk|\n  chunk.each { |record| process_record(record) }\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u30cd\u30b9\u30c8\u5316\u3055\u308c\u305f JSON \u30c7\u30fc\u30bf\u306e\u6b63\u3057\u3044\u53d6\u308a\u6271\u3044<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u8907\u96d1\u306a\u30cd\u30b9\u30c8\u69cb\u9020\u3092\u6301\u3064JSON\u30c7\u30fc\u30bf\u3092\u52b9\u7387\u7684\u306b\u51e6\u7406\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6df1\u3044\u30cd\u30b9\u30c8\u306e\u5b89\u5168\u306a\u53d6\u308a\u6271\u3044<\/strong><\/li>\n<\/ol>\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=\"\"># dig \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u305f\u5b89\u5168\u306a\u30a2\u30af\u30bb\u30b9\ndef safe_dig(hash, *keys)\n  begin\n    keys.reduce(hash) { |h, key| h &amp;&amp; h[key] }\n  rescue StandardError\n    nil\n  end\nend\n\n# \u4f7f\u7528\u4f8b\ncomplex_data = JSON.parse(complex_json)\nvalue = safe_dig(complex_data, 'user', 'settings', 'preferences', 'theme')\nputs value || '\u30c7\u30d5\u30a9\u30eb\u30c8\u5024'<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u518d\u5e30\u7684\u306a\u51e6\u7406\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\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=\"\">def process_nested_json(data)\n  case data\n  when Hash\n    data.transform_values { |v| process_nested_json(v) }\n  when Array\n    data.map { |item| process_nested_json(item) }\n  else\n    data\n  end\nend\n\n# \u7279\u5b9a\u306e\u30ad\u30fc\u3092\u6301\u3064\u8981\u7d20\u3092\u5168\u3066\u62bd\u51fa\u3059\u308b\u4f8b\ndef find_all_by_key(data, target_key, results = [])\n  case data\n  when Hash\n    data.each do |key, value|\n      results &lt;&lt; value if key == target_key\n      find_all_by_key(value, target_key, results)\n    end\n  when Array\n    data.each { |item| find_all_by_key(item, target_key, results) }\n  end\n  results\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">\u65e5\u672c\u8a9e\u3092\u542b\u3080JSON\u30c7\u30fc\u30bf\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u5bfe\u5fdc<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e5\u672c\u8a9e\u30c7\u30fc\u30bf\u3092\u6b63\u3057\u304f\u51e6\u7406\u3059\u308b\u305f\u3081\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6307\u5b9a\u306b\u3088\u308b\u30d1\u30fc\u30b9<\/strong><\/li>\n<\/ol>\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=\"\"># \u65e5\u672c\u8a9e\u3092\u542b\u3080JSON\u306e\u8aad\u307f\u8fbc\u307f\u3068\u66f8\u304d\u8fbc\u307f\ndef process_japanese_json(input_file, output_file)\n  # \u8aad\u307f\u8fbc\u307f\u6642\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6307\u5b9a\n  json_str = File.read(input_file, encoding: 'UTF-8')\n  data = JSON.parse(json_str)\n\n  # \u66f8\u304d\u8fbc\u307f\u6642\u306e\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6307\u5b9a\n  File.open(output_file, 'w:UTF-8') do |f|\n    f.puts JSON.generate(data, {\n      ascii_only: false,  # \u65e5\u672c\u8a9e\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3057\u306a\u3044\n      pretty_generate: true  # \u6574\u5f62\u3057\u3066\u51fa\u529b\n    })\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u6587\u5b57\u5316\u3051\u5bfe\u7b56<\/strong><\/li>\n<\/ol>\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=\"\">def sanitize_encoding(text)\n  text.encode('UTF-8', invalid: :replace, undef: :replace, replace: '?')\nend\n\ndef process_with_encoding(json_str)\n  # \u6587\u5b57\u5316\u3051\u5bfe\u7b56\u3092\u65bd\u3057\u305f\u51e6\u7406\n  sanitized_json = sanitize_encoding(json_str)\n  begin\n    data = JSON.parse(sanitized_json)\n    # \u65e5\u672c\u8a9e\u3092\u542b\u3080\u30c7\u30fc\u30bf\u306e\u51e6\u7406\n    data.transform_values do |value|\n      value.is_a?(String) ? sanitize_encoding(value) : value\n    end\n  rescue JSON::ParserError =&gt; e\n    puts \"JSON\u306e\u30d1\u30fc\u30b9\u306b\u5931\u6557\u3057\u307e\u3057\u305f: #{e.message}\"\n    nil\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u8df5\u7684\u306a\u30c6\u30af\u30cb\u30c3\u30af\u3092\u307e\u3068\u3081\u305f\u65e9\u898b\u8868\uff1a<\/p>\n\n\n<div id=\"id-6596ec77-9cff-4666-801f-d26114593c7d\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u72b6\u6cc1<\/th><th>\u63a8\u5968\u30c6\u30af\u30cb\u30c3\u30af<\/th><th>\u6ce8\u610f\u70b9<\/th><\/tr><\/thead><tbody><tr><td>\u5927\u898f\u6a21\u30c7\u30fc\u30bf<\/td><td>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406<\/td><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306b\u6ce8\u610f<\/td><\/tr><tr><td>\u6df1\u3044\u30cd\u30b9\u30c8<\/td><td>dig\u30e1\u30bd\u30c3\u30c9\u6d3b\u7528<\/td><td>nil\u5bfe\u7b56\u3092\u5fd8\u308c\u305a\u306b<\/td><\/tr><tr><td>\u65e5\u672c\u8a9e\u30c7\u30fc\u30bf<\/td><td>UTF-8\u6307\u5b9a<\/td><td>\u6587\u5b57\u5316\u3051\u78ba\u8a8d<\/td><\/tr><tr><td>\u8907\u96d1\u306a\u5909\u63db<\/td><td>\u518d\u5e30\u51e6\u7406<\/td><td>\u30b9\u30bf\u30c3\u30af\u30aa\u30fc\u30d0\u30fc\u30d5\u30ed\u30fc\u6ce8\u610f<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30c6\u30af\u30cb\u30c3\u30af\u3092\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u52b9\u7387\u7684\u306aJSON\u30c7\u30fc\u30bf\u306e\u51e6\u7406\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u3088\u304f\u3042\u308bJSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc\u3068\u305d\u306e\u89e3\u6c7a\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSON\u30d1\u30fc\u30b9\u51e6\u7406\u3067\u767a\u751f\u3059\u308b\u4e3b\u306a\u30a8\u30e9\u30fc\u3068\u305d\u306e\u5bfe\u51e6\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>JSON::ParserError \u306e\u51e6\u7406<\/strong><\/li>\n<\/ol>\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=\"\">def safe_parse(json_string)\n  begin\n    JSON.parse(json_string)\n  rescue JSON::ParserError =&gt; e\n    # \u30a8\u30e9\u30fc\u30ed\u30b0\u306e\u8a18\u9332\n    logger.error \"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: #{e.message}\"\n    # \u30a8\u30e9\u30fc\u306e\u8a73\u7d30\u3092\u542b\u3080\u30cf\u30c3\u30b7\u30e5\u3092\u8fd4\u3059\n    {\n      error: true,\n      message: \"Invalid JSON format\",\n      details: e.message\n    }\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nresult = safe_parse('{\"invalid\": \"json\"')\nputs result[:error] ? \"\u30a8\u30e9\u30fc: #{result[:message]}\" : \"\u6210\u529f\"<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3088\u304f\u3042\u308b\u30a8\u30e9\u30fc\u3068\u305d\u306e\u539f\u56e0\uff1a<\/p>\n\n\n<div id=\"id-7cbf0423-c326-4e33-8b9f-87e28e87d96d\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30a8\u30e9\u30fc\u7a2e\u985e<\/th><th>\u4e3b\u306a\u539f\u56e0<\/th><th>\u89e3\u6c7a\u65b9\u6cd5<\/th><\/tr><\/thead><tbody><tr><td>\u69cb\u6587\u30a8\u30e9\u30fc<\/td><td>\u62ec\u5f27\u306e\u4e0d\u4e00\u81f4\u3001\u30ab\u30f3\u30de\u306e\u4f4d\u7f6e\u4e0d\u6b63<\/td><td>JSON\u306e\u6574\u5f62\u30fb\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3<\/td><\/tr><tr><td>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u30a8\u30e9\u30fc<\/td><td>\u4e0d\u6b63\u306a\u6587\u5b57\u30b3\u30fc\u30c9<\/td><td>\u9069\u5207\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u6307\u5b9a<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4e0d\u8db3<\/td><td>\u5927\u304d\u3059\u304e\u308bJSON\u30c7\u30fc\u30bf<\/td><td>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u51e6\u7406\u306e\u63a1\u7528<\/td><\/tr><tr><td>\u30ad\u30fc\u91cd\u8907<\/td><td>\u540c\u3058\u30ad\u30fc\u304c\u8907\u6570\u5b58\u5728<\/td><td>\u30c7\u30fc\u30bf\u306e\u30af\u30ea\u30fc\u30cb\u30f3\u30b0<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u4f8b\u5916\u51e6\u7406\u3092\u4f7f\u3063\u305f\u5b89\u5b9a\u306a\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u968e\u5c64\u7684\u306a\u4f8b\u5916\u51e6\u7406<\/strong><\/li>\n<\/ol>\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=\"\">def process_json_with_validation(json_string)\n  begin\n    # \u30d1\u30fc\u30b9\u51e6\u7406\n    data = JSON.parse(json_string)\n\n    # \u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n    validate_json_structure(data)\n\n    # \u30c7\u30fc\u30bf\u51e6\u7406\n    process_data(data)\n\n  rescue JSON::ParserError =&gt; e\n    handle_parser_error(e)\n  rescue ValidationError =&gt; e\n    handle_validation_error(e)\n  rescue StandardError =&gt; e\n    handle_general_error(e)\n  ensure\n    # \u30af\u30ea\u30fc\u30f3\u30a2\u30c3\u30d7\u51e6\u7406\n    cleanup_resources\n  end\nend\n\n# \u5404\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u95a2\u6570\ndef handle_parser_error(error)\n  {\n    status: :error,\n    type: :parser_error,\n    message: error.message,\n    timestamp: Time.now\n  }\nend\n\ndef handle_validation_error(error)\n  {\n    status: :error,\n    type: :validation_error,\n    message: error.message,\n    timestamp: Time.now\n  }\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ab\u30b9\u30bf\u30e0\u4f8b\u5916\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9<\/strong><\/li>\n<\/ol>\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=\"\">module JSONProcessor\n  class ValidationError &lt; StandardError; end\n  class DataTypeError &lt; StandardError; end\n\n  def self.validate_json_structure(data)\n    raise ValidationError, \"\u30c7\u30fc\u30bf\u304c\u7a7a\u3067\u3059\" if data.nil?\n    raise DataTypeError, \"\u914d\u5217\u30c7\u30fc\u30bf\u304c\u5fc5\u8981\u3067\u3059\" unless data.is_a?(Array)\n    # \u305d\u306e\u4ed6\u306e\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nbegin\n  JSONProcessor.validate_json_structure(data)\nrescue JSONProcessor::ValidationError =&gt; e\n  puts \"\u30d0\u30ea\u30c7\u30fc\u30b7\u30e7\u30f3\u30a8\u30e9\u30fc: #{e.message}\"\nrescue JSONProcessor::DataTypeError =&gt; e\n  puts \"\u30c7\u30fc\u30bf\u578b\u30a8\u30e9\u30fc: #{e.message}\"\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6bb5\u968e\u7684\u306a\u30a8\u30e9\u30fc\u30c1\u30a7\u30c3\u30af<\/strong><\/li>\n<\/ol>\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=\"\">def process_with_validation(json_string)\n  # 1. \u57fa\u672c\u7684\u306aJSON\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u30c1\u30a7\u30c3\u30af\n  return { error: \"\u5165\u529b\u304c\u7a7a\u3067\u3059\" } if json_string.nil? || json_string.empty?\n\n  # 2. \u30d1\u30fc\u30b9\u51e6\u7406\n  begin\n    data = JSON.parse(json_string)\n  rescue JSON::ParserError =&gt; e\n    return { error: \"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: #{e.message}\" }\n  end\n\n  # 3. \u30c7\u30fc\u30bf\u69cb\u9020\u306e\u691c\u8a3c\n  unless valid_structure?(data)\n    return { error: \"\u4e0d\u6b63\u306a\u30c7\u30fc\u30bf\u69cb\u9020\u3067\u3059\" }\n  end\n\n  # 4. \u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u884c\n  process_business_logic(data)\nend\n\n# \u69cb\u9020\u30c1\u30a7\u30c3\u30af\u306e\u30d8\u30eb\u30d1\u30fc\u30e1\u30bd\u30c3\u30c9\ndef valid_structure?(data)\n  data.is_a?(Hash) &amp;&amp;\n    data.key?(\"required_field1\") &amp;&amp;\n    data.key?(\"required_field2\")\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30ed\u30ae\u30f3\u30b0\u3068\u76e3\u8996<\/strong><\/li>\n<\/ol>\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=\"\">def parse_with_logging(json_string)\n  begin\n    start_time = Time.now\n    result = JSON.parse(json_string)\n    log_success(start_time)\n    result\n  rescue =&gt; e\n    log_error(e, start_time)\n    raise\n  end\nend\n\ndef log_success(start_time)\n  duration = Time.now - start_time\n  logger.info \"JSON\u30d1\u30fc\u30b9\u6210\u529f (\u6240\u8981\u6642\u9593: #{duration}\u79d2)\"\nend\n\ndef log_error(error, start_time)\n  duration = Time.now - start_time\n  logger.error \"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: #{error.message} (\u6240\u8981\u6642\u9593: #{duration}\u79d2)\"\n  notify_monitoring_service(error) if critical_error?(error)\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u3068\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5b89\u5b9a\u3057\u305fJSON\u30d1\u30fc\u30b9\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-13\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30dd\u30a4\u30f3\u30c8<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-14\">JSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u901f\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u308b\u30c6\u30af\u30cb\u30c3\u30af<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u305f\u3081\u306e\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9ad8\u901f\u306aJSON\u30d1\u30fc\u30b5\u30fc\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\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=\"\"># Oj\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u4f7f\u7528\u4f8b\nrequire 'oj'\n\ndef fast_parse(json_string)\n  # \u30e2\u30fc\u30c9\u306e\u6307\u5b9a\u3067\u3055\u3089\u306a\u308b\u6700\u9069\u5316\n  Oj.load(json_string, mode: :compat)\nend\n\n# \u30d9\u30f3\u30c1\u30de\u30fc\u30af\u6bd4\u8f03\nrequire 'benchmark'\n\njson_string = File.read('large_file.json')\nBenchmark.bm do |x|\n  x.report('\u6a19\u6e96JSON:') { JSON.parse(json_string) }\n  x.report('Oj:') { Oj.load(json_string) }\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30d1\u30fc\u30b9\u7d50\u679c\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u6d3b\u7528<\/strong><\/li>\n<\/ol>\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=\"\">require 'redis'\n\nclass JSONCache\n  def initialize\n    @redis = Redis.new\n    @expiry = 3600 # 1\u6642\u9593\n  end\n\n  def parse_with_cache(json_string)\n    # \u30ad\u30e3\u30c3\u30b7\u30e5\u30ad\u30fc\u306e\u751f\u6210\n    cache_key = \"json_cache:#{Digest::MD5.hexdigest(json_string)}\"\n\n    # \u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u78ba\u8a8d\n    cached = @redis.get(cache_key)\n    return Marshal.load(cached) if cached\n\n    # \u30d1\u30fc\u30b9\u3057\u3066\u7d50\u679c\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\n    result = JSON.parse(json_string)\n    @redis.setex(cache_key, @expiry, Marshal.dump(result))\n    result\n  end\nend<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u4e26\u5217\u51e6\u7406\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\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=\"\">require 'parallel'\n\ndef parallel_json_processing(json_array)\n  Parallel.map(json_array, in_threads: 4) do |json_string|\n    JSON.parse(json_string)\n  end\nend\n\n# \u4f7f\u7528\u4f8b\njson_strings = ['{\"id\": 1}', '{\"id\": 2}', '{\"id\": 3}']\nresults = parallel_json_processing(json_strings)<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3092\u91cd\u8996\u3059\u308b\u305f\u3081\u306e\u5b9f\u88c5\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30e1\u30e2\u30ea\u52b9\u7387\u3092\u8003\u616e\u3057\u305f\u5b9f\u88c5\u30c6\u30af\u30cb\u30c3\u30af\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0\u30d1\u30fc\u30b5\u30fc\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\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=\"\">require 'json\/stream'\n\nclass StreamingJSONParser\n  def parse_file(file_path)\n    parser = JSON::Stream::Parser.new\n    results = []\n\n    parser.start_document { puts \"\u30d1\u30fc\u30b9\u958b\u59cb\" }\n    parser.end_document { puts \"\u30d1\u30fc\u30b9\u5b8c\u4e86\" }\n\n    parser.start_object do |key|\n      # \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u958b\u59cb\u6642\u306e\u51e6\u7406\n    end\n\n    parser.end_object do\n      # \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u7d42\u4e86\u6642\u306e\u51e6\u7406\n    end\n\n    parser.value do |value|\n      results &lt;&lt; value if value.is_a?(Hash)\n    end\n\n    File.open(file_path, 'r') do |file|\n      file.each_line do |line|\n        parser &lt;&lt; line\n      end\n    end\n\n    results\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u76e3\u8996\u3068\u5236\u5fa1<\/strong><\/li>\n<\/ol>\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=\"\">class MemoryAwareParser\n  MAX_MEMORY_MB = 512\n\n  def parse_with_memory_control(json_string)\n    current_memory = get_memory_usage\n\n    if current_memory &gt; MAX_MEMORY_MB\n      GC.start # \u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30b7\u30e7\u30f3\u3092\u5f37\u5236\u5b9f\u884c\n      raise MemoryError if get_memory_usage &gt; MAX_MEMORY_MB\n    end\n\n    JSON.parse(json_string)\n  end\n\n  private\n\n  def get_memory_usage\n    `ps -o rss= -p #{Process.pid}`.to_i \/ 1024 # MB\u306b\u5909\u63db\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/p>\n\n\n<div id=\"id-32392809-9b9e-478c-b64a-a0cba9218060\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6700\u9069\u5316\u9805\u76ee<\/th><th>\u5b9f\u88c5\u65b9\u6cd5<\/th><th>\u52b9\u679c<\/th><th>\u30c8\u30ec\u30fc\u30c9\u30aa\u30d5<\/th><\/tr><\/thead><tbody><tr><td>\u30d1\u30fc\u30b9\u901f\u5ea6<\/td><td>Oj\u306e\u4f7f\u7528<\/td><td>2-3\u500d\u306e\u9ad8\u901f\u5316<\/td><td>\u4f9d\u5b58\u95a2\u4fc2\u306e\u8ffd\u52a0<\/td><\/tr><tr><td>\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf<\/td><td>\u30b9\u30c8\u30ea\u30fc\u30df\u30f3\u30b0<\/td><td>\u5c11\u306a\u3044\u30e1\u30e2\u30ea<\/td><td>\u5b9f\u88c5\u306e\u8907\u96d1\u5316<\/td><\/tr><tr><td>\u4e26\u5217\u51e6\u7406<\/td><td>Parallel\u5229\u7528<\/td><td>\u51e6\u7406\u6642\u9593\u77ed\u7e2e<\/td><td>\u30ea\u30bd\u30fc\u30b9\u6d88\u8cbb\u5897\u52a0<\/td><\/tr><tr><td>\u30ad\u30e3\u30c3\u30b7\u30e5<\/td><td>Redis\u6d3b\u7528<\/td><td>\u7e70\u308a\u8fd4\u3057\u51e6\u7406\u306e\u9ad8\u901f\u5316<\/td><td>\u30a4\u30f3\u30d5\u30e9\u8981\u4ef6\u5897\u52a0<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u6027\u80fd\u6e2c\u5b9a\u3068\u76e3\u8996\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\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=\"\">class PerformanceMonitor\n  def self.measure_parse_performance(json_string)\n    memory_before = `ps -o rss= -p #{Process.pid}`.to_i\n    time_started = Time.now\n\n    result = JSON.parse(json_string)\n\n    time_elapsed = Time.now - time_started\n    memory_after = `ps -o rss= -p #{Process.pid}`.to_i\n    memory_used = memory_after - memory_before\n\n    {\n      parse_time_ms: (time_elapsed * 1000).round(2),\n      memory_used_kb: memory_used,\n      data_size_bytes: json_string.bytesize\n    }\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-16\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-17\">\u5b89\u5168\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u306e\u305f\u3081\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">JSON\u30d1\u30fc\u30b9\u51e6\u7406\u306b\u304a\u3051\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3068\u5bfe\u7b56\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5165\u529b\u5024\u306e\u691c\u8a3c\u3068\u5236\u9650<\/strong><\/li>\n<\/ol>\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=\"\">class SecureJSONParser\n  MAX_DEPTH = 20\n  MAX_SIZE = 1024 * 1024 # 1MB\n\n  def safe_parse(json_string)\n    # \u30b5\u30a4\u30ba\u30c1\u30a7\u30c3\u30af\n    raise \"JSON\u30c7\u30fc\u30bf\u304c\u5927\u304d\u3059\u304e\u307e\u3059\" if json_string.bytesize &gt; MAX_SIZE\n\n    # \u6df1\u3055\u5236\u9650\u4ed8\u304d\u3067\u30d1\u30fc\u30b9\n    JSON.parse(json_string, max_nesting: MAX_DEPTH)\n  rescue JSON::ParserError =&gt; e\n    log_security_event(\"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc\", e.message)\n    raise \"\u4e0d\u6b63\u306aJSON\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\"\n  end\n\n  private\n\n  def log_security_event(type, message)\n    SecurityLogger.log(\n      event_type: type,\n      message: message,\n      timestamp: Time.now,\n      source_ip: request.remote_ip\n    )\n  end\nend<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u653b\u6483\u306e\u9632\u6b62<\/strong><\/li>\n<\/ol>\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=\"\">class JSONValidator\n  ALLOWED_CLASSES = [String, Integer, Float, TrueClass, FalseClass, NilClass]\n\n  def validate_object(obj, depth = 0)\n    return if depth &gt; 10 # \u6700\u5927\u6df1\u5ea6\u306e\u5236\u9650\n\n    case obj\n    when Hash\n      obj.each do |key, value|\n        validate_key(key)\n        validate_object(value, depth + 1)\n      end\n    when Array\n      obj.each { |item| validate_object(item, depth + 1) }\n    else\n      unless ALLOWED_CLASSES.any? { |klass| obj.is_a?(klass) }\n        raise \"\u4e0d\u6b63\u306a\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u30bf\u30a4\u30d7: #{obj.class}\"\n      end\n    end\n  end\n\n  private\n\n  def validate_key(key)\n    unless key.is_a?(String)\n      raise \"\u30ad\u30fc\u306f\u6587\u5b57\u5217\u3067\u3042\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\"\n    end\n\n    if key.length &gt; 100\n      raise \"\u30ad\u30fc\u304c\u9577\u3059\u304e\u307e\u3059\"\n    end\n  end\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u4e00\u822c\u7684\u306a\u8106\u5f31\u6027\u3068\u5bfe\u7b56\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3b\u306a\u8106\u5f31\u6027\u3068\u305d\u306e\u5bfe\u7b56\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>JSON\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u5bfe\u7b56<\/strong><\/li>\n<\/ol>\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=\"\">class JSONSanitizer\n  def sanitize_input(json_string)\n    # \u5236\u5fa1\u6587\u5b57\u306e\u524a\u9664\n    cleaned = json_string.gsub(\/[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F]\/, '')\n\n    # UTF-8\u306e\u691c\u8a3c\n    unless cleaned.force_encoding('UTF-8').valid_encoding?\n      raise \"\u4e0d\u6b63\u306a\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\"\n    end\n\n    cleaned\n  end\n\n  def safe_generate(data)\n    JSON.generate(data, \n      ascii_only: true,    # ASCII\u6587\u5b57\u306e\u307f\u4f7f\u7528\n      max_nesting: 20,     # \u30cd\u30b9\u30c8\u306e\u5236\u9650\n      allow_nan: false     # NaN, Infinity \u3092\u7981\u6b62\n    )\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/p>\n\n\n<div id=\"id-812c1bd9-6f68-4dfc-bdd8-71c3a9b84784\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30c1\u30a7\u30c3\u30af\u9805\u76ee<\/th><th>\u5bfe\u7b56\u65b9\u6cd5<\/th><th>\u91cd\u8981\u5ea6<\/th><\/tr><\/thead><tbody><tr><td>\u5165\u529b\u30b5\u30a4\u30ba\u5236\u9650<\/td><td>MAX_SIZE\u306e\u8a2d\u5b9a<\/td><td>\u9ad8<\/td><\/tr><tr><td>\u30cd\u30b9\u30c8\u5236\u9650<\/td><td>max_nesting\u306e\u6307\u5b9a<\/td><td>\u9ad8<\/td><\/tr><tr><td>\u578b\u30c1\u30a7\u30c3\u30af<\/td><td>ALLOWED_CLASSES\u306e\u5b9a\u7fa9<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30a8\u30f3\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0<\/td><td>UTF-8\u306e\u691c\u8a3c<\/td><td>\u4e2d<\/td><\/tr><tr><td>\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba<\/td><td>allow_nan: false<\/td><td>\u9ad8<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u30bb\u30ad\u30e5\u30a2\u306a\u30c7\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u51e6\u7406<\/strong><\/li>\n<\/ol>\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=\"\">module SecureJSONProcessor\n  class &lt;&lt; self\n    def load_json(json_string)\n      # \u4e8b\u524d\u691c\u8a3c\n      validate_json_syntax(json_string)\n\n      # \u5b89\u5168\u306a\u30d1\u30fc\u30b9\n      parsed = JSON.parse(json_string, \n        create_additions: false,  # \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u751f\u6210\u3092\u7121\u52b9\u5316\n        symbolize_names: true     # \u30b7\u30f3\u30dc\u30eb\u30ad\u30fc\u3092\u4f7f\u7528\n      )\n\n      # \u30d1\u30fc\u30b9\u5f8c\u306e\u691c\u8a3c\n      validate_parsed_data(parsed)\n\n      parsed\n    end\n\n    private\n\n    def validate_json_syntax(json_string)\n      # JSON\u6587\u6cd5\u306e\u691c\u8a3c\n      JSON.parse(json_string)\n    rescue JSON::ParserError =&gt; e\n      raise SecurityError, \"\u4e0d\u6b63\u306aJSON\u69cb\u6587: #{e.message}\"\n    end\n\n    def validate_parsed_data(data)\n      case data\n      when Hash\n        data.each do |k, v|\n          validate_key(k)\n          validate_parsed_data(v)\n        end\n      when Array\n        data.each { |item| validate_parsed_data(item) }\n      else\n        validate_value(data)\n      end\n    end\n\n    def validate_key(key)\n      if key.to_s.length &gt; 100\n        raise SecurityError, \"\u30ad\u30fc\u304c\u9577\u3059\u304e\u307e\u3059\"\n      end\n    end\n\n    def validate_value(value)\n      unless [String, Integer, Float, TrueClass, FalseClass, NilClass].any? { |type| value.is_a?(type) }\n        raise SecurityError, \"\u4e0d\u6b63\u306a\u5024\u306e\u578b: #{value.class}\"\n      end\n    end\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3092\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u5b89\u5168\u306aJSON\u30d1\u30fc\u30b9\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-19\">\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u96c6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">Web API\u304b\u3089\u306e\u5fdc\u7b54\u51e6\u7406\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">RESTful API\u3067\u306e\u5b9f\u8df5\u7684\u306aJSON\u30c7\u30fc\u30bf\u51e6\u7406\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>API\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u5b9f\u88c5<\/strong><\/li>\n<\/ol>\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=\"\">require 'net\/http'\nrequire 'uri'\n\nclass APIClient\n  def initialize(base_url)\n    @base_url = base_url\n  end\n\n  def fetch_data(endpoint, params = {})\n    uri = URI.join(@base_url, endpoint)\n    uri.query = URI.encode_www_form(params)\n\n    response = Net::HTTP.get_response(uri)\n    handle_response(response)\n  end\n\n  private\n\n  def handle_response(response)\n    case response\n    when Net::HTTPSuccess\n      parse_response(response.body)\n    when Net::HTTPUnauthorized\n      raise \"\u8a8d\u8a3c\u30a8\u30e9\u30fc\"\n    when Net::HTTPNotFound\n      raise \"\u30ea\u30bd\u30fc\u30b9\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093\"\n    else\n      raise \"API\u30a8\u30e9\u30fc: #{response.code}\"\n    end\n  end\n\n  def parse_response(body)\n    JSON.parse(body, symbolize_names: true)\n  rescue JSON::ParserError =&gt; e\n    raise \"JSON\u30d1\u30fc\u30b9\u30a8\u30e9\u30fc: #{e.message}\"\n  end\nend\n\n# \u4f7f\u7528\u4f8b\nclient = APIClient.new('https:\/\/api.example.com')\nusers = client.fetch_data('\/users', {page: 1, per_page: 10})<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>Web\u30d5\u30c3\u30af\u306e\u51e6\u7406<\/strong><\/li>\n<\/ol>\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=\"\">class WebhookProcessor\n  def process_webhook(request)\n    # \u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u306e\u53d6\u5f97\u3068\u691c\u8a3c\n    payload = validate_webhook_payload(request.raw_post)\n\n    # \u30a4\u30d9\u30f3\u30c8\u30bf\u30a4\u30d7\u306b\u57fa\u3065\u304f\u51e6\u7406\n    case payload[:event_type]\n    when 'user.created'\n      process_user_creation(payload[:data])\n    when 'order.updated'\n      process_order_update(payload[:data])\n    else\n      raise \"\u672a\u77e5\u306e\u30a4\u30d9\u30f3\u30c8\u30bf\u30a4\u30d7: #{payload[:event_type]}\"\n    end\n  end\n\n  private\n\n  def validate_webhook_payload(raw_payload)\n    # \u30da\u30a4\u30ed\u30fc\u30c9\u306e\u30d1\u30fc\u30b9\u3068\u691c\u8a3c\n    payload = JSON.parse(raw_payload, symbolize_names: true)\n\n    unless payload[:event_type] &amp;&amp; payload[:data]\n      raise \"\u4e0d\u6b63\u306a\u30da\u30a4\u30ed\u30fc\u30c9\u5f62\u5f0f\"\n    end\n\n    payload\n  end\n\n  def process_user_creation(user_data)\n    User.create!(\n      email: user_data[:email],\n      name: user_data[:name],\n      role: user_data[:role]\n    )\n  end\n\n  def process_order_update(order_data)\n    order = Order.find(order_data[:id])\n    order.update!(\n      status: order_data[:status],\n      updated_at: Time.parse(order_data[:updated_at])\n    )\n  end\nend<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-21\">\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u306eJSON\u6d3b\u7528\u65b9\u6cd5<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u8a2d\u5b9a\u7ba1\u7406\u306b\u304a\u3051\u308bJSON\u306e\u6d3b\u7528\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u968e\u5c64\u7684\u306a\u8a2d\u5b9a\u7ba1\u7406<\/strong><\/li>\n<\/ol>\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=\"\">class ConfigManager\n  def initialize(config_path)\n    @config_path = config_path\n    @config = load_config\n  end\n\n  def load_config\n    JSON.parse(File.read(@config_path), symbolize_names: true)\n  rescue Errno::ENOENT\n    raise \"\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093: #{@config_path}\"\n  rescue JSON::ParserError =&gt; e\n    raise \"\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u5f62\u5f0f\u304c\u4e0d\u6b63\u3067\u3059: #{e.message}\"\n  end\n\n  def get(key_path)\n    keys = key_path.to_s.split('.')\n    keys.reduce(@config) { |config, key| config[key.to_sym] }\n  rescue NoMethodError\n    raise \"\u8a2d\u5b9a\u304c\u898b\u3064\u304b\u308a\u307e\u305b\u3093: #{key_path}\"\n  end\nend\n\n# \u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u306e\u4f8b\uff08config.json\uff09\n{\n  \"database\": {\n    \"host\": \"localhost\",\n    \"port\": 5432,\n    \"credentials\": {\n      \"username\": \"admin\",\n      \"password\": \"secure_password\"\n    }\n  },\n  \"api\": {\n    \"endpoint\": \"https:\/\/api.example.com\",\n    \"timeout\": 30,\n    \"retry\": {\n      \"max_attempts\": 3,\n      \"delay\": 5\n    }\n  }\n}\n\n# \u4f7f\u7528\u4f8b\nconfig = ConfigManager.new('config.json')\ndb_host = config.get('database.host')\napi_timeout = config.get('api.timeout')<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u74b0\u5883\u5225\u8a2d\u5b9a\u306e\u7ba1\u7406<\/strong><\/li>\n<\/ol>\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=\"\">class EnvironmentConfig\n  def initialize(env = ENV['RACK_ENV'])\n    @env = env || 'development'\n    @config = load_environment_config\n  end\n\n  def load_environment_config\n    base_config = load_json_file('config\/base.json')\n    env_config = load_json_file(\"config\/#{@env}.json\")\n\n    deep_merge(base_config, env_config)\n  end\n\n  private\n\n  def load_json_file(path)\n    JSON.parse(File.read(path), symbolize_names: true)\n  rescue Errno::ENOENT\n    {}\n  end\n\n  def deep_merge(hash1, hash2)\n    hash1.merge(hash2) do |_, val1, val2|\n      if val1.is_a?(Hash) &amp;&amp; val2.is_a?(Hash)\n        deep_merge(val1, val2)\n      else\n        val2\n      end\n    end\n  end\nend<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u4e00\u89a7\uff1a<\/p>\n\n\n<div id=\"id-691d1447-8f96-47bd-82ae-acb19dcf0a51\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/th><th>\u4e3b\u306a\u6a5f\u80fd<\/th><th>\u5229\u70b9<\/th><\/tr><\/thead><tbody><tr><td>API\u901a\u4fe1<\/td><td>\u30c7\u30fc\u30bf\u306e\u9001\u53d7\u4fe1<\/td><td>\u6a19\u6e96\u7684\u306a\u30c7\u30fc\u30bf\u5f62\u5f0f<\/td><\/tr><tr><td>Webhook<\/td><td>\u30a4\u30d9\u30f3\u30c8\u51e6\u7406<\/td><td>\u975e\u540c\u671f\u901a\u4fe1\u304c\u53ef\u80fd<\/td><\/tr><tr><td>\u8a2d\u5b9a\u7ba1\u7406<\/td><td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8a2d\u5b9a<\/td><td>\u968e\u5c64\u7684\u306a\u7ba1\u7406\u304c\u5bb9\u6613<\/td><\/tr><tr><td>\u30ad\u30e3\u30c3\u30b7\u30e5<\/td><td>\u30c7\u30fc\u30bf\u306e\u4e00\u6642\u4fdd\u5b58<\/td><td>\u30b7\u30ea\u30a2\u30e9\u30a4\u30ba\u304c\u7c21\u5358<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u3092\u53c2\u8003\u306b\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u6700\u9069\u306aJSON\u51e6\u7406\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1328","post","type-post","status-publish","format-standard","category-ruby","nothumb"],"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1328"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1328\/revisions"}],"predecessor-version":[{"id":1329,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/1328\/revisions\/1329"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}