{"id":420,"date":"2026-03-07T09:28:59","date_gmt":"2026-03-07T00:28:59","guid":{"rendered":"https:\/\/i-third.org\/blog\/?p=420"},"modified":"2026-03-07T09:28:59","modified_gmt":"2026-03-07T00:28:59","slug":"%e3%80%90java-web%e9%96%8b%e7%99%ba-%e5%ae%8c%e5%85%a8%e3%83%ad%e3%83%bc%e3%83%89%e3%83%9e%e3%83%83%e3%83%97%e3%80%91html%e3%83%bbsql%e3%83%bb%e3%82%b5%e3%83%bc%e3%83%96%e3%83%ac%e3%83%83%e3%83%88","status":"publish","type":"post","link":"https:\/\/i-third.org\/blog\/?p=420","title":{"rendered":"\u3010Java Web\u958b\u767a \u5b8c\u5168\u30ed\u30fc\u30c9\u30de\u30c3\u30d7\u3011HTML\u30fbSQL\u30fb\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u30fbDAO\u307e\u30671\u65e5\u3067\u5b66\u3076\uff01\u4eca\u65e5\u306e\u5b66\u7fd2\u3092\u7dcf\u307e\u3068\u3081"},"content":{"rendered":"\n\n\n\n<p>\u300cJava\u3063\u3066\u5b66\u3076\u3053\u3068\u304c\u591a\u3059\u304e\u3066\u3001\u3069\u3053\u304b\u3089\u624b\u3092\u3064\u3051\u308c\u3070\u3044\u3044\u304b\u308f\u304b\u3089\u306a\u3044\u300d\u2014\u2014\u305d\u3046\u611f\u3058\u3066\u3044\u308b\u65b9\u306f\u591a\u3044\u306f\u305a\u3067\u3059\u3002\u3067\u3082\u5b9f\u306f\u3001Java Web\u958b\u767a\u306b\u5fc5\u8981\u306a\u6280\u8853\u306b\u306f<strong>\u6c7a\u307e\u3063\u305f\u9806\u756a\u3068\u7e4b\u304c\u308a<\/strong>\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4eca\u65e51\u65e5\u3067\u5b66\u3093\u3060\u306e\u306f\u3001\u305d\u306e\u7e4b\u304c\u308a\u306e\u6838\u5fc3\u90e8\u5206\u2014\u2014<strong>\u300cHTML\u3067\u30da\u30fc\u30b8\u3092\u4f5c\u308a\u30fbSQL\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u30fb\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3067\u51e6\u7406\u3057\u3066\u30fbDAO\u3067\u7dba\u9e97\u306b\u8a2d\u8a08\u3059\u308b\u300d<\/strong>\u3068\u3044\u3046\u4e00\u9023\u306e\u6d41\u308c\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u4eca\u65e5\u30ab\u30d0\u30fc\u3057\u305f4\u3064\u306e\u30c6\u30fc\u30de\u3092<strong>\u300c\u5168\u4f53\u50cf\u304c\u898b\u3048\u308b\u7dcf\u307e\u3068\u3081\u300d<\/strong>\u3068\u3057\u3066\u6574\u7406\u3057\u307e\u3059\u3002\u5404\u30c6\u30fc\u30de\u306e\u8a73\u7d30\u8a18\u4e8b\u3078\u306e\u30ea\u30f3\u30af\u3082\u7528\u610f\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u5fa9\u7fd2\u306b\u6d3b\u7528\u3057\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"toc\">\u76ee\u6b21<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n  <li><a href=\"#overview\">\u4eca\u65e5\u306e\u5b66\u7fd2\u30de\u30c3\u30d7\uff1a4\u30c6\u30fc\u30de\u306e\u7e4b\u304c\u308a\u3092\u7406\u89e3\u3057\u3088\u3046<\/a><\/li>\n  <li><a href=\"#section1\">\u30c6\u30fc\u30de\u2460\u3000HTML\u306e\u57fa\u672c\u69cb\u9020\u3068CSS\u306e\u5f79\u5272\u5206\u62c5<\/a><\/li>\n  <li><a href=\"#section2\">\u30c6\u30fc\u30de\u2461\u3000\u73fe\u5834\u3067\u4f7f\u3046SELECT\u6587\uff1a\u30c7\u30fc\u30bf\u8abf\u67fb\u7de8\uff06\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7de8<\/a><\/li>\n  <li><a href=\"#section3\">\u30c6\u30fc\u30de\u2462\u3000\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\uff06JSP\u306e\u672c\u8cea\u3068\u6ce8\u610f\u70b9<\/a><\/li>\n  <li><a href=\"#section4\">\u30c6\u30fc\u30de\u2463\u3000DAO\u30af\u30e9\u30b9\uff06Model\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/a><\/li>\n  <li><a href=\"#connect\">4\u30c6\u30fc\u30de\u3092\u7e4b\u3052\u308b\u3068\u898b\u3048\u3066\u304f\u308b\u300cWeb\u30a2\u30d7\u30ea\u306e\u5168\u4f53\u50cf\u300d<\/a><\/li>\n  <li><a href=\"#summary\">\u307e\u3068\u3081\uff1a\u4eca\u65e5\u306e\u5b66\u3073\u30923\u884c\u3067\u6574\u7406<\/a><\/li>\n<\/ul>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"overview\">\u4eca\u65e5\u306e\u5b66\u7fd2\u30de\u30c3\u30d7\uff1a4\u30c6\u30fc\u30de\u306e\u7e4b\u304c\u308a\u3092\u7406\u89e3\u3057\u3088\u3046<\/h2>\n\n\n\n<p>\u4eca\u65e5\u5b66\u3093\u30604\u30c6\u30fc\u30de\u306f\u3001\u30d0\u30e9\u30d0\u30e9\u306b\u5b58\u5728\u3057\u3066\u3044\u308b\u308f\u3051\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u300c\u30ea\u30af\u30a8\u30b9\u30c8\u301c\u30ec\u30b9\u30dd\u30f3\u30b9\u300d\u3068\u3044\u30461\u672c\u306e\u6d41\u308c\u306e\u4e2d\u3067\u3001\u305d\u308c\u305e\u308c\u304c\u660e\u78ba\u306a\u5f79\u5272\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre><code>\u3010\u4eca\u65e5\u306e\u5b66\u7fd2\u30de\u30c3\u30d7\uff1aWeb\u30a2\u30d7\u30ea \u30ea\u30af\u30a8\u30b9\u30c8\u301c\u30ec\u30b9\u30dd\u30f3\u30b9\u306e\u6d41\u308c\u3011\n\n\u2460 \u30d6\u30e9\u30a6\u30b6\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff09\n   \u2514\u2500 \u30c6\u30fc\u30de\u2460 HTML\u3067\u4f5c\u3089\u308c\u305f\u5165\u529b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\n            \u2514\u2500 DOCTYPE\u30fbhead\/body\u69cb\u9020\u30fb\u30d6\u30ed\u30c3\u30af\/\u30a4\u30f3\u30e9\u30a4\u30f3\u8981\u7d20\n            \u2514\u2500 CSS\u3067\u300c\u69cb\u9020\uff08HTML\uff09\u300d\u3068\u300c\u898b\u305f\u76ee\u300d\u3092\u5206\u96e2\u3059\u308b\n\n                        \u2193 HTTP\u30ea\u30af\u30a8\u30b9\u30c8\n\n\u2461 \u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\uff08Controller\uff09\n   \u2514\u2500 \u30c6\u30fc\u30de\u2462 \u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u53d6\u308a\u51e6\u7406\u3092\u632f\u308a\u5206\u3051\u308b\n            \u2514\u2500 HttpServlet\u7d99\u627f\u30fbdoGet()\/doPost()\u30fb\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\n            \u2514\u2500 \u30d5\u30a9\u30ef\u30fc\u30c9\u3067JSP\u3078\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3067\u5225URL\u3078\n            \u2514\u2500 \u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406\u3067\u30ed\u30b0\u30a4\u30f3\u72b6\u614b\u3092\u4fdd\u6301\u3059\u308b\n\n                        \u2193 DAO\u3092\u547c\u3076\n\n\u2462 DAO \/ Model\u5c64\n   \u2514\u2500 \u30c6\u30fc\u30de\u2463 DAO\u304cDB\u30a2\u30af\u30bb\u30b9\u3092\u4e00\u624b\u306b\u5f15\u304d\u53d7\u3051\u308b\n            \u2514\u2500 JDBC\uff1a\u63a5\u7d9a\u2192PreparedStatement\u2192ResultSet\u2192\u30af\u30ed\u30fc\u30ba\n            \u2514\u2500 ResultSet \u2192 DTO\u306b\u5909\u63db \u2192 List&lt;DTO&gt;\u3067\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3078\u8fd4\u3059\n            \u2514\u2500 JavaBeans\u3067\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092Model\u306b\u307e\u3068\u3081\u308b\n\n                        \u2193 SQL\u767a\u884c\n\n\u2463 \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\uff08MySQL\uff09\n   \u2514\u2500 \u30c6\u30fc\u30de\u2461 SELECT\u6587\u3067\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u30fb\u96c6\u8a08\u30fb\u7d50\u5408\u3059\u308b\n            \u2514\u2500 WHERE\u30fbORDER BY\u30fbGROUP BY\uff0b\u96c6\u7d04\u95a2\u6570\n            \u2514\u2500 INNER JOIN \/ LEFT OUTER JOIN\n            \u2514\u2500 PreparedStatement\u3067\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\u5b9f\u884c\n\n                        \u2193 DTO\u30ea\u30b9\u30c8\u3067\u8fd4\u5374\n\n\u2464 JSP\uff08View\uff09\n   \u2514\u2500 \u30c6\u30fc\u30de\u2462 JSP\u304c\u30c7\u30fc\u30bf\u3092\u53d7\u3051\u53d6\u308aHTML\u3068\u3057\u3066\u8868\u793a\u3059\u308b\n            \u2514\u2500 EL\u5f0f ${ } \u3067\u30b9\u30af\u30ea\u30d7\u30c8\u30ec\u30b9\u306b\u8868\u793a\n            \u2514\u2500 \u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306fJSP\u306b\u66f8\u304b\u306a\u3044\n\n                        \u2193 HTML\u30ec\u30b9\u30dd\u30f3\u30b9\n\n\u2465 \u30d6\u30e9\u30a6\u30b6\uff08\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\uff09\n   \u2514\u2500 \u30c6\u30fc\u30de\u2460 CSS\uff08\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\uff09\u3067\u30c7\u30b6\u30a4\u30f3\u3055\u308c\u305f\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u308b<\/code><\/pre>\n\n\n\n<p>\u3053\u306e\u6d41\u308c\u304c\u300c\u982d\u306e\u5730\u56f3\u300d\u3068\u3057\u3066\u5165\u308b\u3068\u3001\u4eca\u5f8c\u3069\u3093\u306a\u6a5f\u80fd\u3092\u4f5c\u308b\u3068\u304d\u3082<strong>\u300c\u3069\u306e\u30af\u30e9\u30b9\u306b\u4f55\u3092\u66f8\u3051\u3070\u3044\u3044\u304b\u300d\u304c\u8ff7\u308f\u306a\u304f\u306a\u308a\u307e\u3059<\/strong>\u3002\u3067\u306f\u5404\u30c6\u30fc\u30de\u3092\u9806\u306b\u632f\u308a\u8fd4\u308a\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"section1\">\u30c6\u30fc\u30de\u2460\u3000HTML\u306e\u57fa\u672c\u69cb\u9020\u3068CSS\u306e\u5f79\u5272\u5206\u62c5<\/h2>\n\n\n\n<p>Web\u958b\u767a\u306e\u51fa\u767a\u70b9\u306f<strong>\u300c\u30d6\u30e9\u30a6\u30b6\u306b\u8868\u793a\u3055\u308c\u308b\u753b\u9762\u3092\u4f5c\u308b\u3053\u3068\u300d<\/strong>\u3067\u3059\u3002HTML\u3068CSS\u306f\u305d\u306e2\u5927\u6280\u8853\u3067\u3059\u304c\u3001\u305d\u308c\u305e\u308c\u306e\u5f79\u5272\u3092\u6df7\u540c\u3057\u306a\u3044\u3053\u3068\u304c\u6700\u521d\u306e\u91cd\u8981\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd11 \u4eca\u65e5\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>\u9805\u76ee<\/th><th>\u5185\u5bb9<\/th><th>\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u9244\u5247<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><strong>HTML\u9aa8\u683c<\/strong><\/td>\n      <td><code>&lt;!DOCTYPE html&gt;<\/code> \u2192 <code>&lt;html&gt;<\/code> \u2192 <code>&lt;head&gt;<\/code>\uff08\u8a2d\u5b9a\uff09\uff0b <code>&lt;body&gt;<\/code>\uff08\u8868\u793a\uff09<\/td>\n      <td>head\u306f\u300c\u30d6\u30e9\u30a6\u30b6\u306b\u898b\u3048\u306a\u3044\u8a2d\u5b9a\u30a8\u30ea\u30a2\u300d\u3001body\u304c\u300c\u30d6\u30e9\u30a6\u30b6\u306b\u898b\u3048\u308b\u30b3\u30f3\u30c6\u30f3\u30c4\u30a8\u30ea\u30a2\u300d<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u30d6\u30ed\u30c3\u30af vs \u30a4\u30f3\u30e9\u30a4\u30f3<\/strong><\/td>\n      <td>\u30d6\u30ed\u30c3\u30af\uff08<code>&lt;div&gt;<\/code><code>&lt;p&gt;<\/code><code>&lt;h1&gt;<\/code>\uff09\u306f\u300c\u7bb1\u300d\u3002\u30a4\u30f3\u30e9\u30a4\u30f3\uff08<code>&lt;span&gt;<\/code><code>&lt;a&gt;<\/code>\uff09\u306f\u300c\u6587\u4e2d\u306e\u90e8\u54c1\u300d<\/td>\n      <td>\u30d6\u30ed\u30c3\u30af\u306e\u4e2d\u306b\u30a4\u30f3\u30e9\u30a4\u30f3\u306fOK\u3002\u9006\u306fNG<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>CSS\u306e\u66f8\u304d\u5834\u6240<\/strong><\/td>\n      <td>\u30a4\u30f3\u30e9\u30a4\u30f3 \/ style\u30bf\u30b0 \/ \u5916\u90e8\u30d5\u30a1\u30a4\u30eb\uff08.css\uff09\u306e3\u30d1\u30bf\u30fc\u30f3<\/td>\n      <td>\u5b9f\u52d9\u306f\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u4e00\u629e\u3002\u8907\u6570\u30da\u30fc\u30b8\u306b\u4e00\u62ec\u9069\u7528\u3067\u304d\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u30bb\u30ec\u30af\u30bf\u306e\u7a2e\u985e<\/strong><\/td>\n      <td>\u8981\u7d20\u30bb\u30ec\u30af\u30bf\u30fb\u30af\u30e9\u30b9\uff08<code>.<\/code>\uff09\u30fbID\uff08<code>#<\/code>\uff09<\/td>\n      <td>\u4f7f\u3044\u56de\u3059\u306a\u3089 <code>class<\/code>\u30011\u304b\u6240\u3060\u3051\u306a\u3089 <code>id<\/code><\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u5f79\u5272\u5206\u62c5\u306e\u9244\u5247<\/strong><\/td>\n      <td>HTML\u306f\u300c\u69cb\u9020\u30fb\u610f\u5473\u300d\u3001CSS\u306f\u300c\u898b\u305f\u76ee\u300d<\/td>\n      <td><code>&lt;font color=\"red\"&gt;<\/code> \u306e\u3088\u3046\u306bHTML\u306b\u30c7\u30b6\u30a4\u30f3\u3092\u66f8\u304b\u306a\u3044<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<pre><code>&lt;!-- \u2705 \u4eca\u65e5\u306e\u6700\u91cd\u8981\u30b3\u30fc\u30c9\uff1aHTML\u69cb\u9020\u3068CSS\u306e\u5f79\u5272\u5206\u62c5 --&gt;\n\n&lt;!-- HTML\uff08\u69cb\u9020\u30fb\u610f\u5473\u3060\u3051\u3092\u66f8\u304f\uff09 --&gt;\n&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n  &lt;head&gt;\n    &lt;meta charset=\"UTF-8\"&gt;\n    &lt;title&gt;\u30da\u30fc\u30b8\u30bf\u30a4\u30c8\u30eb&lt;\/title&gt;\n    &lt;link rel=\"stylesheet\" href=\"style.css\"&gt;  &lt;!-- CSS\u306f\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u3067 --&gt;\n  &lt;\/head&gt;\n  &lt;body&gt;\n    &lt;div id=\"header\"&gt;\u30d8\u30c3\u30c0\u30fc&lt;\/div&gt;\n    &lt;p class=\"important\"&gt;\u91cd\u8981\u306a\u304a\u77e5\u3089\u305b&lt;\/p&gt;\n  &lt;\/body&gt;\n&lt;\/html&gt;\n\n\/* CSS\uff08\u898b\u305f\u76ee\u3060\u3051\u3092\u66f8\u304f\uff09 *\/\n#header   { background-color: #333; color: #fff; padding: 20px; }\n.important { color: red; font-weight: bold; }<\/code><\/pre>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"section2\">\u30c6\u30fc\u30de\u2461\u3000\u73fe\u5834\u3067\u4f7f\u3046SELECT\u6587\uff1a\u30c7\u30fc\u30bf\u8abf\u67fb\u7de8\uff06\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7de8<\/h2>\n\n\n\n<p>Web\u30a2\u30d7\u30ea\u306e\u307b\u307c\u3059\u3079\u3066\u306e\u6a5f\u80fd\u306fDB\u3068\u306e\u9023\u643a\u304c\u3042\u308a\u307e\u3059\u3002<strong>\u300c\u3069\u3046\u30c7\u30fc\u30bf\u3092\u53d6\u308b\u304b\u300d\u3092\u5236\u3059\u308b\u306e\u304cSELECT\u6587<\/strong>\u3067\u3059\u3002\u4eca\u65e5\u306f\u300c\u73fe\u5834\u3067\u3088\u304f\u4f7f\u30466\u30d1\u30bf\u30fc\u30f3\u300d\u30922\u8ef8\u3067\u6574\u7406\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd11 \u4eca\u65e5\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>\u5206\u985e<\/th><th>\u30d1\u30bf\u30fc\u30f3<\/th><th>\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u9244\u5247<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td rowspan=\"3\"><strong>\u30c7\u30fc\u30bf\u8abf\u67fb\u7de8<\/strong><\/td>\n      <td><code>WHERE<\/code> \u53e5\uff1aIN\u30fbBETWEEN\u30fbLIKE \u3067\u7d5e\u308a\u8fbc\u3080<\/td>\n      <td><code>LIKE '%\u30ad\u30fc\u30ef\u30fc\u30c9%'<\/code> \u3067\u90e8\u5206\u4e00\u81f4\u691c\u7d22\u3002<code>%<\/code> \u306f\u4efb\u610f\u6587\u5b57\u5217<\/td>\n    <\/tr>\n    <tr>\n      <td><code>ORDER BY<\/code>\uff1aASC\uff08\u6607\u9806\uff09\/ DESC\uff08\u964d\u9806\uff09<\/td>\n      <td>\u8907\u6570\u5217\u6307\u5b9a\u306f\u5de6\u304b\u3089\u512a\u5148\u3002\u7701\u7565\u6642\u306fASC<\/td>\n    <\/tr>\n    <tr>\n      <td><code>GROUP BY<\/code> \uff0b \u96c6\u7d04\u95a2\u6570\uff08COUNT\/SUM\/MAX\uff09<\/td>\n      <td>\u5b9f\u884c\u9806\u306f <strong>WHERE \u2192 GROUP BY \u2192 HAVING \u2192 SELECT \u2192 ORDER BY<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td rowspan=\"3\"><strong>\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7de8<\/strong><\/td>\n      <td><code>INNER JOIN<\/code>\uff1a\u4e21\u30c6\u30fc\u30d6\u30eb\u306b\u4e00\u81f4\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u3060\u3051\u53d6\u5f97<\/td>\n      <td><code>ON t1.company_id = t2.company_id<\/code> \u3067\u7d50\u5408\u6761\u4ef6\u3092\u6307\u5b9a<\/td>\n    <\/tr>\n    <tr>\n      <td><code>LEFT OUTER JOIN<\/code>\uff1a\u5de6\u30c6\u30fc\u30d6\u30eb\u5168\u4ef6\uff0b\u4e00\u81f4\u3057\u306a\u3051\u308c\u3070NULL<\/td>\n      <td>\u300c\u672a\u767b\u9332\u30fb\u672a\u8a2d\u5b9a\u306e\u4eba\u3082\u6f0f\u308c\u306a\u304f\u53d6\u308a\u305f\u3044\u300d\u3068\u304d\u306b\u4f7f\u3046<\/td>\n    <\/tr>\n    <tr>\n      <td><code>PreparedStatement<\/code>\uff1a<code>?<\/code>\uff08\u30d7\u30ec\u30fc\u30b9\u30db\u30eb\u30c0\uff09\u3067SQL\u5b9f\u884c<\/td>\n      <td>SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u9632\u6b62\u306e\u5fc5\u9808\u624b\u6bb5\u3002\u6587\u5b57\u5217\u7d50\u5408\u306f\u7d76\u5bfeNG<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<pre><code>-- \u2705 \u4eca\u65e5\u306e\u6700\u91cd\u8981SQL\u30d1\u30bf\u30fc\u30f3\u96c6\n\n-- \u2460\u7d5e\u308a\u8fbc\u307f\uff08LIKE\u30fbIN\u30fbBETWEEN\uff09\nSELECT * FROM m_company WHERE company_name LIKE '%\u682a\u5f0f\u4f1a\u793e%';\nSELECT * FROM m_company WHERE company_id IN (1, 3, 5);\nSELECT * FROM m_company WHERE company_id BETWEEN 2 AND 6;\n\n-- \u2461\u4e26\u3079\u66ff\u3048\uff08ORDER BY\uff09\nSELECT * FROM m_company ORDER BY area_id ASC, company_id DESC;\n\n-- \u2462\u96c6\u8a08\uff08GROUP BY + COUNT\uff09\nSELECT area_name, COUNT(*) AS cnt FROM m_company\nGROUP BY area_name HAVING COUNT(*) &gt;= 2;\n\n-- \u2463\u5185\u90e8\u7d50\u5408\uff08INNER JOIN\uff09\nSELECT t1.person_lname, t2.company_name\nFROM m_person t1 INNER JOIN m_company t2 ON t1.company_id = t2.company_id;\n\n-- \u2464PreparedStatement\uff08Java\u30b3\u30fc\u30c9\uff09\nString sql = \"SELECT * FROM m_company WHERE company_name = ?\";\nPreparedStatement pstmt = con.prepareStatement(sql);\npstmt.setString(1, inputName);\nResultSet rs = pstmt.executeQuery();<\/code><\/pre>\n\n\n\n<p>\u7279\u306b\u300c<strong>WHERE\u3068HAVING\u306e\u4f7f\u3044\u5206\u3051<\/strong>\u300d\u306f\u8a66\u9a13\u3067\u3082\u5b9f\u52d9\u3067\u3082\u983b\u51fa\u3067\u3059\u3002<strong>\u300c\u96c6\u7d04\u95a2\u6570\uff08COUNT\u7b49\uff09\u306e\u7d50\u679c\u3092\u6761\u4ef6\u306b\u3059\u308b\u306a\u3089HAVING\u3001\u500b\u5225\u30ec\u30b3\u30fc\u30c9\u306e\u7d5e\u308a\u8fbc\u307f\u306fWHERE\u300d<\/strong>\u3068\u899a\u3048\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"section3\">\u30c6\u30fc\u30de\u2462\u3000\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\uff06JSP\u306e\u672c\u8cea\u3068\u6ce8\u610f\u70b9<\/h2>\n\n\n\n<p>Java\u3067Web\u30a2\u30d7\u30ea\u3092\u4f5c\u308b\u3068\u304d\u306e<strong>2\u5927\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9\u6280\u8853<\/strong>\u3067\u3059\u3002\u300c\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3067\u51e6\u7406\u3057\u3066JSP\u3067\u8868\u793a\u3059\u308b\u300d\u3068\u3044\u3046\u5f79\u5272\u5206\u62c5\u304cMVC\u306e\u57fa\u672c\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd11 \u4eca\u65e5\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>\u6280\u8853<\/th><th>\u672c\u8cea<\/th><th>\u899a\u3048\u3066\u304a\u304f\u3079\u304d\u6ce8\u610f\u70b9<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><strong>\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8<\/strong><\/td>\n      <td>HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3059\u308bJava\u30af\u30e9\u30b9\u3002<code>HttpServlet<\/code>\u3092\u7d99\u627f\u3057<code>doGet()<\/code>\/<code>doPost()<\/code>\u3092\u30aa\u30fc\u30d0\u30fc\u30e9\u30a4\u30c9<\/td>\n      <td>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f1\u3064\uff1d\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u52d5\u4f5c\u3002<strong>\u30d5\u30a3\u30fc\u30eb\u30c9\u5909\u6570\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u6301\u3064\u306e\u306f\u5371\u967a<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td><strong>GET vs POST<\/strong><\/td>\n      <td>GET\u306fURL\u306b\u30c7\u30fc\u30bf\u304c\u898b\u3048\u308b\u3002POST\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u30dc\u30c7\u30a3\u306b\u683c\u7d0d<\/td>\n      <td><strong>\u30d1\u30b9\u30ef\u30fc\u30c9\u30fb\u500b\u4eba\u60c5\u5831\u306e\u9001\u4fe1\u306f\u5fc5\u305aPOST<\/strong><\/td>\n    <\/tr>\n    <tr>\n      <td><strong>JSP<\/strong><\/td>\n      <td>HTML\u306bJava\u3092\u57cb\u3081\u8fbc\u3081\u308b\u753b\u9762\u8868\u793a\u5c02\u7528\u30d5\u30a1\u30a4\u30eb\u3002\u521d\u56de\u30a2\u30af\u30bb\u30b9\u6642\u306b\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3078\u81ea\u52d5\u30b3\u30f3\u30d1\u30a4\u30eb<\/td>\n      <td><strong>\u30b9\u30af\u30ea\u30d7\u30c8\u30ec\u30c3\u30c8\u3092\u66f8\u304d\u3059\u304e\u308b\u3068\u4fdd\u5b88\u5730\u7344<\/strong>\u3002\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306f\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\/DAO\u3078<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u30d5\u30a9\u30ef\u30fc\u30c9<\/strong><\/td>\n      <td>\u540c\u4e00AP\u30b5\u30fc\u30d0\u5185\u306e\u8ee2\u9001\u3002URL\u304c\u5909\u308f\u3089\u306a\u3044\u3002request\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u5171\u6709\u3067\u304d\u308b<\/td>\n      <td>\u300c\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3067\u51e6\u7406 \u2192 JSP\u3067\u8868\u793a\u300d\u306e\u9ec4\u91d1\u30d1\u30bf\u30fc\u30f3\u3067\u4f7f\u3046<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u30ea\u30c0\u30a4\u30ec\u30af\u30c8<\/strong><\/td>\n      <td>\u30d6\u30e9\u30a6\u30b6\u3078\u300c\u3053\u306eURL\u306b\u79fb\u52d5\u3057\u3066\u300d\u3068\u6307\u793a\u3002URL\u304c\u5909\u308f\u308b<\/td>\n      <td>\u51e6\u7406\u5b8c\u4e86\u5f8c\u306b\u30c8\u30c3\u30d7\u30da\u30fc\u30b8\u3078\u8a98\u5c0e\u3059\u308b\u3068\u304d\u306a\u3069\u306b\u4f7f\u3046<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>\u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406<\/strong><\/td>\n      <td>HTTP\u306f\u30b9\u30c6\u30fc\u30c8\u30ec\u30b9\u306a\u306e\u3067\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u3092\u4fdd\u6301\u3059\u308b<\/td>\n      <td><strong>\u4e0d\u8981\u306b\u306a\u3063\u305f\u3089invalidate()\u3067\u5fc5\u305a\u7834\u68c4<\/strong>\u3002\u653e\u7f6e\u306f\u30b5\u30fc\u30d0\u306e\u30e1\u30e2\u30ea\u5727\u8feb\u306b\u3064\u306a\u304c\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<pre><code>\/\/ \u2705 \u4eca\u65e5\u306e\u6700\u91cd\u8981\u30b3\u30fc\u30c9\u30d1\u30bf\u30fc\u30f3\uff1a\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u2192JSP\u30d5\u30a9\u30ef\u30fc\u30c9\n\n@WebServlet(\"\/login\")\npublic class LoginServlet extends HttpServlet {\n    @Override\n    protected void doPost(HttpServletRequest request, HttpServletResponse response)\n            throws ServletException, IOException {\n\n        request.setCharacterEncoding(\"UTF-8\");\n        String name     = request.getParameter(\"NAME\");\n        String password = request.getParameter(\"PASSWORD\");\n\n        if (\"embex\".equals(password)) {\n            \/\/ \u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u3092\u4fdd\u5b58\n            HttpSession session = request.getSession();\n            session.setAttribute(\"loginUser\", name);\n\n            \/\/ JSP\u3078\u30d5\u30a9\u30ef\u30fc\u30c9\uff08\u51e6\u7406\u7d50\u679c\u3092\u8868\u793a\u3055\u305b\u308b\uff09\n            request.setAttribute(\"userName\", name);\n            request.getRequestDispatcher(\"\/welcome.jsp\").forward(request, response);\n        } else {\n            request.getRequestDispatcher(\"\/login.html\").forward(request, response);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<pre><code>&lt;!-- \u2705 JSP\u5074\uff1aEL\u5f0f\u3067\u30b9\u30af\u30ea\u30d7\u30c8\u30ec\u30b9\u306b\u8868\u793a\uff08\u30b9\u30af\u30ea\u30d7\u30c8\u30ec\u30c3\u30c8\u3092\u66f8\u304b\u306a\u3044\uff01\uff09 --&gt;\n&lt;%@ page contentType=\"text\/html; charset=UTF-8\" %&gt;\n&lt;h1&gt;\u3088\u3046\u3053\u305d\u3001${userName}\u3055\u3093\uff01&lt;\/h1&gt;\n&lt;p&gt;\u30ed\u30b0\u30a4\u30f3\u306b\u6210\u529f\u3057\u307e\u3057\u305f\u3002&lt;\/p&gt;<\/code><\/pre>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"section4\">\u30c6\u30fc\u30de\u2463\u3000DAO\u30af\u30e9\u30b9\uff06Model\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/h2>\n\n\n\n<p>\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u30fbJSP\u30fbSQL\u3068\u5b66\u3093\u3067\u304d\u3066\u3001\u6700\u5f8c\u306b\u300c\u305d\u308c\u3089\u3092\u3069\u3046\u7dba\u9e97\u306b\u7e4b\u3052\u308b\u304b\u300d\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3\u3092\u5b66\u3073\u307e\u3057\u305f\u3002\u305d\u308c\u304c<strong>DAO\u30d1\u30bf\u30fc\u30f3 + DTO\/JavaBeans<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udd11 \u4eca\u65e5\u306e\u30ad\u30fc\u30dd\u30a4\u30f3\u30c8\uff1a3\u8005\u306e\u9055\u3044\u3092\u6574\u7406\u3059\u308b<\/h3>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>\u30af\u30e9\u30b9<\/th><th>\u5f79\u5272<\/th><th>\u6301\u3064\u3082\u306e<\/th><th>\u305f\u3068\u3048\u8a71<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td><strong>DTO<\/strong><br>\uff08Data Transfer Object\uff09<\/td>\n      <td>\u30c6\u30fc\u30d6\u30eb1\u884c\u5206\u306e\u30c7\u30fc\u30bf\u3092<strong>\u904b\u3076\u5165\u308c\u7269<\/strong><\/td>\n      <td>\u30d5\u30a3\u30fc\u30eb\u30c9\uff0bgetter\/setter\u306e\u307f<\/td>\n      <td>\u5b85\u914d\u306e\u300c\u6bb5\u30dc\u30fc\u30eb\u7bb1\u300d<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>JavaBeans<\/strong><\/td>\n      <td>DTO\u306b<strong>\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u8ffd\u52a0<\/strong>\u3057\u305fModel<\/td>\n      <td>\u30d5\u30a3\u30fc\u30eb\u30c9\uff0bgetter\/setter\uff0b\u696d\u52d9\u51e6\u7406\u30e1\u30bd\u30c3\u30c9<\/td>\n      <td>\u300c\u5224\u65ad\u3082\u3067\u304d\u308b\u6bb5\u30dc\u30fc\u30eb\u7bb1\u300d<\/td>\n    <\/tr>\n    <tr>\n      <td><strong>DAO<\/strong><br>\uff08Data Access Object\uff09<\/td>\n      <td>DB\u30a2\u30af\u30bb\u30b9\u3092<strong>\u5c02\u9580\u306b\u884c\u3046<\/strong>\u30af\u30e9\u30b9<\/td>\n      <td>JDBC\u51e6\u7406\u30fbSQL\u30fbCRUD\u64cd\u4f5c<\/td>\n      <td>\u300c\u5009\u5eab\u306e\u62c5\u5f53\u8005\u300d<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<pre><code>\/\/ \u2705 \u4eca\u65e5\u306e\u6700\u91cd\u8981\u30b3\u30fc\u30c9\u30d1\u30bf\u30fc\u30f3\uff1aDAO \u2192 DTO\u5909\u63db \u2192 List\u3067\u8fd4\u3059\n\npublic class CompanyDAO {\n    public List&lt;CompanyDTO&gt; findAll() {\n        List&lt;CompanyDTO&gt; list = new ArrayList&lt;&gt;();\n        Connection con = null; PreparedStatement pstmt = null; ResultSet rs = null;\n        try {\n            con   = DriverManager.getConnection(URL, USER, PASS);\n            pstmt = con.prepareStatement(\"SELECT * FROM m_company ORDER BY company_id\");\n            rs    = pstmt.executeQuery();\n            while (rs.next()) {\n                CompanyDTO dto = new CompanyDTO();          \/\/ DB\u306e1\u884c \u2192 DTO\u306e1\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\n                dto.setCompanyId(rs.getInt(\"company_id\"));\n                dto.setCompanyName(rs.getString(\"company_name\"));\n                dto.setAreaName(rs.getString(\"area_name\"));\n                list.add(dto);                              \/\/ List\u306bDTO\u3092\u8ffd\u52a0\n            }\n        } catch (SQLException e) { e.printStackTrace();\n        } finally {\n            \/\/ \u5fc5\u305a\u30af\u30ed\u30fc\u30ba\uff08finally \u3067\u78ba\u5b9f\u306b\uff09\n            try { if (rs    != null) rs.close();    } catch (SQLException e) {}\n            try { if (pstmt != null) pstmt.close(); } catch (SQLException e) {}\n            try { if (con   != null) con.close();   } catch (SQLException e) {}\n        }\n        return list;   \/\/ List&lt;CompanyDTO&gt; \u3092\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3078\u8fd4\u3059\n    }\n}<\/code><\/pre>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"connect\">4\u30c6\u30fc\u30de\u3092\u7e4b\u3052\u308b\u3068\u898b\u3048\u3066\u304f\u308b\u300cWeb\u30a2\u30d7\u30ea\u306e\u5168\u4f53\u50cf\u300d<\/h2>\n\n\n\n<p>\u4eca\u65e5\u5b66\u3093\u30604\u30c6\u30fc\u30de\u30921\u672c\u306e\u30b3\u30fc\u30c9\u30d5\u30ed\u30fc\u3068\u3057\u3066\u7e4b\u3052\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u304c<strong>MVC\u30e2\u30c7\u30eb\u306b\u57fa\u3065\u3044\u305fJava Web\u30a2\u30d7\u30ea\u306e\u5b8c\u6210\u5f62<\/strong>\u3067\u3059\u3002<\/p>\n\n\n\n<pre><code>\/\/ ===== MVC\u30e2\u30c7\u30eb\u5b8c\u6210\u5f62\uff1a\u4f1a\u793e\u4e00\u89a7\u8868\u793a\u6a5f\u80fd\u306e\u5168\u4f53\u30d5\u30ed\u30fc =====\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2460 HTML\uff1a\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u30ea\u30af\u30a8\u30b9\u30c8\u9001\u4fe1\u3011\n\/\/ &lt;a href=\"\/companyList\"&gt;\u4f1a\u793e\u4e00\u89a7\u3092\u898b\u308b&lt;\/a&gt;\n\/\/ \u2193 GET\u30ea\u30af\u30a8\u30b9\u30c8\u9001\u4fe1\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2462 \u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\uff08Controller\uff09\u3011\n@WebServlet(\"\/companyList\")\npublic class CompanyListServlet extends HttpServlet {\n    protected void doGet(HttpServletRequest request, HttpServletResponse response)\n            throws ServletException, IOException {\n\n        \/\/ \u3010\u30c6\u30fc\u30de\u2463 DAO\u3092\u547c\u3076\uff08\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306fDAO\u306b\u4efb\u305b\u308b\uff09\u3011\n        CompanyDAO dao = new CompanyDAO();\n        List&lt;CompanyDTO&gt; companyList = dao.findAll();   \/\/ \u2190 \u5185\u90e8\u3067SQL\u3092\u767a\u884c\n\n        \/\/ JSP\uff08View\uff09\u3078\u6e21\u3059\u305f\u3081\u306brequest\u306b\u30bb\u30c3\u30c8\n        request.setAttribute(\"companyList\", companyList);\n\n        \/\/ JSP\u3078\u30d5\u30a9\u30ef\u30fc\u30c9\uff08URL\u306f\u5909\u308f\u3089\u306a\u3044\uff09\n        request.getRequestDispatcher(\"\/companyList.jsp\").forward(request, response);\n    }\n}\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2461 SQL\uff08DAO\u306e\u5185\u90e8\u3067\u767a\u884c\uff09\u3011\n\/\/ SELECT company_id, company_name, area_name\n\/\/ FROM testdb.m_company\n\/\/ INNER JOIN testdb.m_area ON m_company.area_id = m_area.area_id\n\/\/ ORDER BY company_id ASC;\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2463 DTO\uff1aResultSet \u2192 Java\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3078\u5909\u63db\u3011\n\/\/ DB\u306e1\u884c = CompanyDTO\u306e1\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u2192 List&lt;CompanyDTO&gt; \u3067\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3078\u8fd4\u308b\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2462 JSP\uff08View\uff09\uff1aEL\u5f0f\u3067\u30b9\u30af\u30ea\u30d7\u30c8\u30ec\u30b9\u306b\u8868\u793a\u3011\n\/\/ &lt;c:forEach var=\"company\" items=\"${companyList}\"&gt;\n\/\/   &lt;tr&gt;\n\/\/     &lt;td&gt;${company.companyId}&lt;\/td&gt;\n\/\/     &lt;td&gt;${company.companyName}&lt;\/td&gt;\n\/\/     &lt;td&gt;${company.areaName}&lt;\/td&gt;\n\/\/   &lt;\/tr&gt;\n\/\/ &lt;\/c:forEach&gt;\n\n\/\/ \u3010\u30c6\u30fc\u30de\u2460 CSS\uff1a\u5916\u90e8\u30d5\u30a1\u30a4\u30eb\u3067\u753b\u9762\u3092\u30c7\u30b6\u30a4\u30f3\u3011\n\/\/ table { border-collapse: collapse; width: 100%; }\n\/\/ td, th { border: 1px solid #ccc; padding: 8px; }<\/code><\/pre>\n\n\n\n<p>4\u30c6\u30fc\u30de\u306f\u305d\u308c\u305e\u308c\u72ec\u7acb\u3057\u305f\u6280\u8853\u3067\u3059\u304c\u3001<strong>Web\u30a2\u30d7\u30ea\u3068\u3044\u30461\u3064\u306e\u30b7\u30b9\u30c6\u30e0\u306e\u4e2d\u3067\u300c\u753b\u9762 \u2192 \u51e6\u7406 \u2192 DB \u2192 \u8868\u793a\u300d\u3068\u3044\u3046\u5f79\u5272\u3092\u62c5\u3044\u3001\u5bc6\u63a5\u306b\u9023\u643a\u3057\u3066\u3044\u307e\u3059<\/strong>\u3002\u3069\u306e\u30c6\u30fc\u30de\u304c\u6b20\u3051\u3066\u3082\u3001Web\u30a2\u30d7\u30ea\u306f\u6210\u7acb\u3057\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u3001\u5404\u6280\u8853\u306e<strong>\u300c\u5f79\u5272\u5206\u62c5\u306e\u9244\u5247\u300d<\/strong>\u3082\u4eca\u65e5\u306e\u30c6\u30fc\u30de\u306b\u4e00\u8cab\u3057\u3066\u6d41\u308c\u3066\u3044\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>\u6280\u8853<\/th><th>\u3084\u308b\u3053\u3068<\/th><th>\u3084\u3089\u306a\u3044\u3053\u3068<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr><td><strong>HTML<\/strong><\/td><td>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u69cb\u9020\u30fb\u610f\u5473\u3092\u5b9a\u7fa9\u3059\u308b<\/td><td>\u8272\u30fb\u30d5\u30a9\u30f3\u30c8\u306a\u3069\u30c7\u30b6\u30a4\u30f3\u3092\u66f8\u304b\u306a\u3044<\/td><\/tr>\n    <tr><td><strong>CSS<\/strong><\/td><td>\u898b\u305f\u76ee\u30fb\u30b9\u30bf\u30a4\u30eb\u3092\u5b9a\u7fa9\u3059\u308b<\/td><td>\u30b3\u30f3\u30c6\u30f3\u30c4\u306e\u610f\u5473\u306b\u95a2\u4e0e\u3057\u306a\u3044<\/td><\/tr>\n    <tr><td><strong>\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8<\/strong><\/td><td>\u30ea\u30af\u30a8\u30b9\u30c8\u51e6\u7406\u30fbDAO\u3092\u547c\u3076\u30fbJSP\u3078\u6e21\u3059<\/td><td>SQL\u30fbJDBC\u30b3\u30fc\u30c9\u3092\u66f8\u304b\u306a\u3044<\/td><\/tr>\n    <tr><td><strong>JSP<\/strong><\/td><td>\u53d7\u3051\u53d6\u3063\u305f\u30c7\u30fc\u30bf\u3092HTML\u3068\u3057\u3066\u8868\u793a\u3059\u308b<\/td><td>\u696d\u52d9\u30ed\u30b8\u30c3\u30af\u30fbDB\u51e6\u7406\u3092\u66f8\u304b\u306a\u3044<\/td><\/tr>\n    <tr><td><strong>DAO<\/strong><\/td><td>SQL\u767a\u884c\u30fbDB\u63a5\u7d9a\u30fbCRUD\u64cd\u4f5c<\/td><td>HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u30fbHTML\u306e\u69cb\u9020\u306b\u95a2\u308f\u3089\u306a\u3044<\/td><\/tr>\n    <tr><td><strong>DTO\/JavaBeans<\/strong><\/td><td>\u30c7\u30fc\u30bf\u3092\u4fdd\u6301\u30fb\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u6301\u3064<\/td><td>DB\u30a2\u30af\u30bb\u30b9\u30fbHTTP\u901a\u4fe1\u3092\u884c\u308f\u306a\u3044<\/td><\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n<hr>\n\n\n<h2 class=\"wp-block-heading\" id=\"summary\">\u307e\u3068\u3081\uff1a\u4eca\u65e5\u306e\u5b66\u3073\u30923\u884c\u3067\u6574\u7406<\/h2>\n\n\n\n<p>\u4eca\u65e5\u30ab\u30d0\u30fc\u3057\u305f\u5185\u5bb9\u306f\u3001Java Web\u958b\u767a\u306e\u307b\u307c\u3059\u3079\u3066\u306e\u571f\u53f0\u306b\u306a\u308b\u6280\u8853\u7fa4\u3067\u3059\u3002\u6700\u5f8c\u306b\u300c\u4eca\u65e5\u306e\u5b66\u3073\u306e\u6838\u5fc3\u300d\u30923\u884c\u3067\u307e\u3068\u3081\u307e\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\">\n<table>\n  <thead>\n    <tr><th>#<\/th><th>\u30c6\u30fc\u30de<\/th><th>\u4eca\u65e5\u306e\u6838\u5fc3\u30e1\u30c3\u30bb\u30fc\u30b8<\/th><\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>\u2460<\/td>\n      <td><strong>HTML \/ CSS<\/strong><\/td>\n      <td>\u300cHTML\u306f\u9aa8\u683c\u3001CSS\u306f\u670d\u300d\u3002\u3053\u306e\u5f79\u5272\u5206\u62c5\u3092\u5b88\u308b\u3060\u3051\u3067\u4fdd\u5b88\u3057\u3084\u3059\u3044\u30b3\u30fc\u30c9\u306b\u306a\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\u2461<\/td>\n      <td><strong>SELECT\u6587<\/strong><\/td>\n      <td>WHERE\u30fbORDER BY\u30fbGROUP BY\u306e3\u3064\u3092\u81ea\u5728\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u306e\u304c\u7b2c\u4e00\u76ee\u6a19\u3002<code>?<\/code>\uff08PreparedStatement\uff09\u3067SQL\u306f\u5fc5\u305a\u5b89\u5168\u306b\u5b9f\u884c\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\u2462<\/td>\n      <td><strong>\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8 \/ JSP<\/strong><\/td>\n      <td>\u300c\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u306f\u53f8\u4ee4\u5854\u3001JSP\u306f\u8868\u793a\u4fc2\u300d\u3002JSP\u306b\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u3092\u66f8\u304f\u306e\u304c\u6700\u5927\u306e\u843d\u3068\u3057\u7a74<\/td>\n    <\/tr>\n    <tr>\n      <td>\u2463<\/td>\n      <td><strong>DAO \/ Model<\/strong><\/td>\n      <td>\u300cDAO\uff1d\u5009\u5eab\u62c5\u5f53\u3001DTO\uff1d\u6bb5\u30dc\u30fc\u30eb\u7bb1\u300d\u3002DB\u51e6\u7406\u3092DAO\u306b\u9694\u96e2\u3059\u308b\u3053\u3068\u3067\u5909\u66f4\u306e\u5f71\u97ff\u7bc4\u56f2\u304c\u6700\u5c0f\u9650\u306b\u306a\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n<\/figure>\n\n\n\n<p>\u4eca\u65e5\u306e4\u30c6\u30fc\u30de\u3092\u8cab\u304f<strong>\u4e00\u756a\u5927\u5207\u306a\u8003\u3048\u65b9\u306f\u300c\u5f79\u5272\u5206\u62c5\u300d<\/strong>\u3067\u3059\u3002HTML\u3068CSS\u3001\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\u3068JSP\u3001DAO\u3068DTO\u2014\u2014\u305d\u308c\u305e\u308c\u304c\u300c\u81ea\u5206\u306e\u4ed5\u4e8b\u3060\u3051\u3092\u3059\u308b\u300d\u3088\u3046\u306b\u8a2d\u8a08\u3059\u308b\u3053\u3068\u3067\u3001\u4fee\u6b63\u304c\u697d\u306b\u306a\u308a\u3001\u30c1\u30fc\u30e0\u3067\u5206\u696d\u3067\u304d\u3001\u30d0\u30b0\u304c\u6e1b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u6b21\u306e\u30b9\u30c6\u30c3\u30d7\u306f\u3001\u4eca\u65e5\u306e4\u30c6\u30fc\u30de\u3092\u3059\u3079\u3066\u4f7f\u3063\u305f<strong>\u300c\u4f1a\u793e\u4e00\u89a7 \u2192 \u8a73\u7d30 \u2192 \u767b\u9332 \u2192 \u66f4\u65b0 \u2192 \u524a\u9664\u300d\u306e\u30d5\u30ebCRUD\u30a2\u30d7\u30ea<\/strong>\u3092\u5b9f\u969b\u306b\u624b\u3092\u52d5\u304b\u3057\u3066\u4f5c\u308b\u3053\u3068\u3067\u3059\u3002\u8a2d\u8a08\u56f3\uff08\u30c7\u30fc\u30bf\u306e\u6d41\u308c\uff09\u306f\u4eca\u65e5\u5b66\u3093\u3060\u3082\u306e\u3067\u5b8c\u6210\u3057\u3066\u3044\u307e\u3059\u3002\u3042\u3068\u306f\u30b3\u30fc\u30c9\u306b\u843d\u3068\u3059\u3060\u3051\uff01<\/p>\n\n\n\n<p>\u5404\u30c6\u30fc\u30de\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u30b7\u30ea\u30fc\u30ba\u5225\u8a18\u4e8b\u3082\u3042\u308f\u305b\u3066\u3054\u6d3b\u7528\u304f\u3060\u3055\u3044\u3002\u624b\u3092\u52d5\u304b\u3059\u3053\u3068\u304c\u4e00\u756a\u306e\u8fd1\u9053\u2014\u2014\u4eca\u65e5\u5b66\u3093\u3060\u3053\u3068\u3092\u305c\u3072\u5b9f\u969b\u306e\u30b3\u30fc\u30c9\u3067\u8a66\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\uff01<\/p>\n\n\n<hr>\n\n\n<h3 class=\"wp-block-heading\">\ud83d\udcda \u30b7\u30ea\u30fc\u30ba\u8a18\u4e8b\u4e00\u89a7\uff08\u4eca\u65e5\u306e\u88dc\u8b1b\uff09<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n  <li>\u3010Java\u57fa\u790e\u2460\u3011\u5909\u6570\uff08\u30d7\u30ea\u30df\u30c6\u30a3\u30d6\u578b\u30fb\u53c2\u7167\u578b\u30fb\u30b9\u30b3\u30fc\u30d7\uff09<\/li>\n  <li>\u3010Java\u57fa\u790e\u2461\u3011\u30e1\u30bd\u30c3\u30c9\uff08\u5b9a\u7fa9\u30fb\u5f15\u6570\u30fb\u623b\u308a\u5024\u30fb\u547d\u540d\u898f\u7d04\uff09<\/li>\n  <li>\u3010Java\u57fa\u790e\u2462\u3011\u30af\u30e9\u30b9\uff08\u8a2d\u8a08\u56f3\u30fb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u30fb\u30ab\u30d7\u30bb\u30eb\u5316\u30fb\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\uff09<\/li>\n  <li>\u3010Web\u57fa\u790e\u2460\u3011<strong>HTML\u306e\u57fa\u672c\u69cb\u9020\u3068CSS\u306e\u5f79\u5272\u5206\u62c5<\/strong>\u3000\u2190 \u4eca\u65e5<\/li>\n  <li>\u3010DB\/SQL\u2460\u3011<strong>\u73fe\u5834\u3067\u4f7f\u3046SELECT\u6587\uff08\u30c7\u30fc\u30bf\u8abf\u67fb\u7de8\uff06\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u7de8\uff09<\/strong>\u3000\u2190 \u4eca\u65e5<\/li>\n  <li>\u3010Java Web\u2460\u3011<strong>\u30b5\u30fc\u30d6\u30ec\u30c3\u30c8\uff06JSP\u306e\u672c\u8cea\u3068\u6ce8\u610f\u70b9<\/strong>\u3000\u2190 \u4eca\u65e5<\/li>\n  <li>\u3010Java Web\u2461\u3011<strong>DAO\u30af\u30e9\u30b9\uff06Model\u30af\u30e9\u30b9\u306e\u8a2d\u8a08\u30d1\u30bf\u30fc\u30f3<\/strong>\u3000\u2190 \u4eca\u65e5<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u300cJava\u3063\u3066\u5b66\u3076\u3053\u3068\u304c\u591a\u3059\u304e\u3066\u3001\u3069\u3053\u304b\u3089\u624b\u3092\u3064\u3051\u308c\u3070\u3044\u3044\u304b\u308f\u304b\u3089\u306a\u3044\u300d\u2014\u2014\u305d\u3046\u611f\u3058\u3066\u3044\u308b\u65b9\u306f\u591a\u3044\u306f\u305a\u3067\u3059\u3002\u3067\u3082\u5b9f\u306f\u3001Java Web\u958b\u767a\u306b\u5fc5\u8981\u306a\u6280\u8853\u306b\u306f\u6c7a\u307e\u3063\u305f\u9806\u756a\u3068\u7e4b\u304c\u308a\u304c\u3042\u308a\u307e\u3059\u3002 \u4eca\u65e51\u65e5\u3067\u5b66\u3093\u3060\u306e\u306f\u3001\u305d\u306e\u7e4b\u304c\u308a&hellip;<\/p>\n","protected":false},"author":1,"featured_media":425,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-420","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7"],"_links":{"self":[{"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/420","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=420"}],"version-history":[{"count":1,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions"}],"predecessor-version":[{"id":421,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions\/421"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=\/wp\/v2\/media\/425"}],"wp:attachment":[{"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i-third.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}