{"id":1239,"date":"2018-04-22T09:59:00","date_gmt":"2018-04-22T00:59:00","guid":{"rendered":"http:\/\/www.code-magagine.com\/?p=1239"},"modified":"2023-05-27T20:43:07","modified_gmt":"2023-05-27T11:43:07","slug":"%e3%80%90jsp%e3%80%91jstl%e3%81%a7%e7%b9%b0%e3%82%8a%e8%bf%94%e3%81%97%e6%96%87%e3%82%92%e4%bd%bf%e3%81%86%e3%81%ab%e3%81%af%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/www.code-magagine.com\/?p=1239","title":{"rendered":"\u3010JSP\u3011JSTL\u3067\u7e70\u308a\u8fd4\u3057\u6587\u3092\u4f7f\u3046\u306b\u306f\uff1f"},"content":{"rendered":"

JSTL\u3067\u3001\u7e70\u308a\u8fd4\u3057\u6587\u3092\u4f7f\u3046\u5834\u5408\u306b\u4f7f\u7528\u3059\u308b\u30bf\u30b0\u3068\u3057\u3066\u306f\u4e0b\u8a18\u3067\u3059\u3002<\/p>\n\n\n\n\n\n
\u30bf\u30b0<\/th>\n\u8aac\u660e<\/th>\n<\/tr>\n
c:forEach<\/td>\n\u30eb\u30fc\u30d7<\/td>\n<\/tr>\n
c:forTokens<\/td>\n\u6587\u5b57\u5217\u306e\u8d70\u67fb<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u30b5\u30f3\u30d7\u30eb\u3067\u4f7f\u3063\u3066\u3044\u308bJavaBeans<\/h2>\n
\r\npackage bean;\r\n\r\npublic class TestBean {\r\n\r\n\tprivate String name;\r\n\r\n\tprivate int age;\r\n\r\n\tpublic String getName() {\r\n\t\treturn name;\r\n\t}\r\n\r\n\tpublic void setName(String name) {\r\n\t\tthis.name = name;\r\n\t}\r\n\r\n\tpublic int getAge() {\r\n\t\treturn age;\r\n\t}\r\n\r\n\tpublic void setAge(int age) {\r\n\t\tthis.age = age;\r\n\t}\r\n\r\n}\r\n<\/pre>\n
c:forEach<\/h2>\n
\u30b5\u30f3\u30d7\u30eb<\/h3>\n
\r\n<%@page contentType="text\/html; charset=UTF-8" %>\r\n<%@page import="bean.*" %>\r\n<%@page import="java.util.List,java.util.ArrayList" %>\r\n<%@taglib prefix="c" uri="http:\/\/java.sun.com\/jsp\/jstl\/core"%>\r\n\r\n<HTML>\r\n<HEAD>\r\n<TITLE>JSTLTest<\/TITLE>\r\n<\/HEAD>\r\n<BODY>\r\n\r\n<%\r\nList<TestBean> beanList = new ArrayList<TestBean>();\r\n\r\nTestBean bean1 = new TestBean();\r\nbean1.setName("\u592a\u90ce");\r\nbean1.setAge(42);\r\n\r\nTestBean bean2 = new TestBean();\r\nbean2.setName("\u6b21\u90ce");\r\nbean2.setAge(38);\r\n\r\nbeanList.add(bean1);\r\nbeanList.add(bean2);\r\n\r\nrequest.setAttribute("beanList",beanList);\r\n\r\n%>\r\n\r\n<c:forEach var="bean" items="${beanList}">\r\n\t\r\n\r\n\t\t<c:choose>\r\n\t\t\t<c:when test="${bean.age>=40}">\r\n\t\t\t\t${bean.name}\u3055\u3093\u306f\u3001\u3082\u3046\u4e2d\u5e74\u3067\u3059\u2026\u3002\r\n\t\t\t<\/c:when>\r\n\t\t\t<c:otherwise>\r\n\t\t\t\t${bean.name}\u3055\u3093\u306f\u3001\u307e\u3060\u82e5\u3044\u3067\u3059\uff01\r\n\t\t\t<\/c:otherwise>\r\n\t\t<\/c:choose>\r\n\t\r\n\r\n<\/c:forEach>\r\n\r\n\r\n<\/BODY>\r\n<\/HTML>\r\n<\/pre>\n
\u30dd\u30a4\u30f3\u30c8<\/h3>\n
    \n
  • items\u306b\u3001JavaBeans\u306e\u96c6\u5408\u4f53\u3067\u3042\u308bArrayList\u3092\u5165\u308c\u3066\u3044\u307e\u3059\u3002var\u3067\u3001\u4e00\u3064\u306eJavaBeans\u3092\u53d6\u308a\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n
  • \u901a\u5e38\u3001forEach\u306f\u3001\u4e0a\u8a18\u306e\u3088\u3046\u306b\u300cc:choose\u7b49\u306e\u6761\u4ef6\u5206\u5c90\u300d\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046\u3053\u3068\u304c\u591a\u3044\u3067\u3057\u3087\u3046\u3002<\/li>\n<\/ul>\n
    \u5b9f\u884c\u7d50\u679c<\/h3>\n
    \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"JSTL\u3067\u3001\u7e70\u308a\u8fd4\u3057\u6587\u3092\u4f7f\u3046\u5834\u5408\u306b\u4f7f\u7528\u3059\u308b\u30bf\u30b0\u3068\u3057\u3066\u306f\u4e0b\u8a18\u3067\u3059\u3002 \u30bf\u30b0 \u8aac\u660e c:forEach \u30eb\u30fc\u30d7 c:forTokens \u6587\u5b57\u5217\u306e\u8d70\u67fb \u30b5\u30f3\u30d7\u30eb\u3067\u4f7f\u3063\u3066\u3044\u308bJavaBeans c:forEach \u30b5\u30f3\u30d7\u30eb \u30dd\u30a4\u30f3 […]","protected":false},"author":1,"featured_media":1398,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/1239"}],"collection":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1239"}],"version-history":[{"count":7,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/1239\/revisions"}],"predecessor-version":[{"id":20251,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/posts\/1239\/revisions\/20251"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=\/wp\/v2\/media\/1398"}],"wp:attachment":[{"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1239"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.code-magagine.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}