{"id":1090,"date":"2021-03-08T22:51:55","date_gmt":"2021-03-08T14:51:55","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/java\/?p=1090"},"modified":"2021-05-03T17:13:45","modified_gmt":"2021-05-03T09:13:45","slug":"jstl%e6%a0%87%e5%87%86%e6%a0%87%e7%ad%be%e5%ba%93","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/java\/post-1090.html","title":{"rendered":"JSTL\u6807\u51c6\u6807\u7b7e\u5e93"},"content":{"rendered":"\n<p>JSTL\u5168\u79f0\u4e3aJSP Standard Tag Library\uff0c\u5373JSP\u6807\u51c6\u6807\u7b7e\u5e93\u3002\u6807\u51c6\u6807\u7b7e\u5e93\u53ef\u4ee5\u63d0\u9ad8JSP\u9875\u9762\u7684\u5f00\u53d1\u6548\u7387, \u4e0d\u9700\u8981\u81ea\u5df1\u5f00\u53d1, \u53ea\u9700\u8981\u7a0d\u5fae\u5b66\u4e60\u4f7f\u7528\u5373\u53ef.<\/p>\n\n\n\n<h2>\u4e0b\u8f7djar\u5305\u6216\u5bfc\u5165\u5750\u6807<\/h2>\n\n\n\n<p>\u5148\u4e0b\u8f7d jstl, \u8fd9\u91cc\u4e0b\u8f7d <a rel=\"noreferrer noopener\" href=\"https:\/\/pan.5252.online\/%E5%BC%80%E5%8F%91%E5%B7%A5%E5%85%B7\/JavaJar\/JSTL\/\" target=\"_blank\">1.2\u7248\u672c\u7684 jar\u5305<\/a>, (2\u4e2a\u90fd\u8981, \u4e0d\u53ef\u4ee5\u7528maven\u7248\u672c)<\/p>\n\n\n\n<p>maven\u5bfc\u5165\u4ee5\u4e0b\u5750\u6807<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;dependency>\n    &lt;groupId>taglibs&lt;\/groupId>\n    &lt;artifactId>standard&lt;\/artifactId>\n    &lt;version>1.1.2&lt;\/version>\n&lt;\/dependency><\/code><\/pre>\n\n\n\n<p>jstl\u5206\u7c7b\u5f88\u591a, \u6bcf\u4e2a\u7c7b\u522b\u7684\u5bfc\u5165\u7684\u6807\u7b7e\u5e93\u4e0d\u4e00\u6837, \u8bed\u53e5\u4e5f\u4e0d\u540c, \u5927\u6982\u53ef\u4ee5\u5206\u62105\u7c7b<\/p>\n\n\n\n<ol><li><strong>\u6838\u5fc3\u6807\u7b7e<\/strong><\/li><li><strong>\u683c\u5f0f\u5316\u6807\u7b7e<\/strong><\/li><li><strong>SQL \u6807\u7b7e<\/strong><\/li><li><strong>XML \u6807\u7b7e<\/strong><\/li><li><strong>JSTL \u51fd\u6570<\/strong><\/li><\/ol>\n\n\n\n<h2>\u6838\u5fc3\u6807\u7b7e\u5e93<\/h2>\n\n\n\n<p>\u6838\u5fc3\u6807\u7b7e\u5e93\u662f\u6700\u5e38\u7528\u7684\u7684\u6807\u7b7e<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%@ taglib prefix=\"c\" uri=\"http:\/\/java.sun.com\/jsp\/jstl\/core\" %><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td>&lt;c:out&gt;<\/td><td>\u7528\u4e8e\u5728JSP\u4e2d\u663e\u793a\u6570\u636e\uff0c\u5c31\u50cf&lt;%= &#8230; &gt;<\/td><\/tr><tr><td>&lt;c:set&gt;<\/td><td>\u7528\u4e8e\u4fdd\u5b58\u6570\u636e<\/td><\/tr><tr><td>&lt;c:remove&gt;<\/td><td>\u7528\u4e8e\u5220\u9664\u6570\u636e<\/td><\/tr><tr><td>&lt;c:catch&gt;<\/td><td>\u7528\u6765\u5904\u7406\u4ea7\u751f\u9519\u8bef\u7684\u5f02\u5e38\u72b6\u51b5\uff0c\u5e76\u4e14\u5c06\u9519\u8bef\u4fe1\u606f\u50a8\u5b58\u8d77\u6765<\/td><\/tr><tr><td>&lt;c:if&gt;<\/td><td>\u4e0e\u6211\u4eec\u5728\u4e00\u822c\u7a0b\u5e8f\u4e2d\u7528\u7684if\u4e00\u6837<\/td><\/tr><tr><td>&lt;c:choose&gt;<\/td><td>\u672c\u8eab\u53ea\u5f53\u505a&lt;c:when&gt;\u548c&lt;c:otherwise&gt;\u7684\u7236\u6807\u7b7e<\/td><\/tr><tr><td>&lt;c:when&gt;<\/td><td>&lt;c:choose&gt;\u7684\u5b50\u6807\u7b7e\uff0c\u7528\u6765\u5224\u65ad\u6761\u4ef6\u662f\u5426\u6210\u7acb<\/td><\/tr><tr><td>&lt;c:otherwise&gt;<\/td><td>&lt;c:choose&gt;\u7684\u5b50\u6807\u7b7e\uff0c\u63a5\u5728&lt;c:when&gt;\u6807\u7b7e\u540e\uff0c\u5f53&lt;c:when&gt;\u6807\u7b7e\u5224\u65ad\u4e3afalse\u65f6\u88ab\u6267\u884c<\/td><\/tr><tr><td>&lt;c:import&gt;<\/td><td>\u68c0\u7d22\u4e00\u4e2a\u7edd\u5bf9\u6216\u76f8\u5bf9 URL\uff0c\u7136\u540e\u5c06\u5176\u5185\u5bb9\u66b4\u9732\u7ed9\u9875\u9762<\/td><\/tr><tr><td>&lt;c:forEach&gt;<\/td><td>\u57fa\u7840\u8fed\u4ee3\u6807\u7b7e\uff0c\u63a5\u53d7\u591a\u79cd\u96c6\u5408\u7c7b\u578b<\/td><\/tr><tr><td>&lt;c:forTokens&gt;<\/td><td>\u6839\u636e\u6307\u5b9a\u7684\u5206\u9694\u7b26\u6765\u5206\u9694\u5185\u5bb9\u5e76\u8fed\u4ee3\u8f93\u51fa<\/td><\/tr><tr><td>&lt;c:param&gt;<\/td><td>\u7528\u6765\u7ed9\u5305\u542b\u6216\u91cd\u5b9a\u5411\u7684\u9875\u9762\u4f20\u9012\u53c2\u6570<\/td><\/tr><tr><td>&lt;c:redirect&gt;<\/td><td>\u91cd\u5b9a\u5411\u81f3\u4e00\u4e2a\u65b0\u7684URL.<\/td><\/tr><tr><td>&lt;c:url&gt;<\/td><td>\u4f7f\u7528\u53ef\u9009\u7684\u67e5\u8be2\u53c2\u6570\u6765\u521b\u9020\u4e00\u4e2aURL<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4>&lt;c:out&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u8fd9\u4e2a\u6807\u7b7e, \u7528\u4f5c\u8f93\u51fa, \u4f46\u6bd4 &lt;%= %&gt; \u8981\u66f4\u7075\u6d3b<\/p>\n\n\n\n<ul><li>value = \u6587\u5b57\u6216EL\u8868\u8fbe\u5f0f<\/li><li>escapeXml = true\/false <\/li><li>default = \u6587\u5b57\u6216EL\u8868\u8fbe\u5f0f <\/li><\/ul>\n\n\n\n<p>value\u8868\u793a\u8981\u8f93\u51fa\u7684\u503c, escapeXml\u6807\u8bb0value\u4e2d\u662f\u5426\u4f7f\u7528\u8f6c\u4e49\u5b57\u7b26, default\u8868\u793avalue\u4e3anull\u65f6\u7684\u8f93\u51fa, \u4e5f\u53ef\u4ee5\u5199\u5728c:out\u6807\u7b7e\u4e2d\u95f4<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:out value=\"${null}\" escapeXml=\"false\" default=\"\u9ed8\u8ba4\u503c\">&lt;\/c:out><\/code><\/pre>\n\n\n\n<h4>&lt;c:set&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u8fd9\u4e2a\u6807\u7b7e\u7528\u4e8e\u4fdd\u5b58\u6570\u636e, \u6216\u4fee\u6539\u6570\u636e, \u5982\u679c2\u6b21\u5b58\u50a8\u540c\u4e00\u4e2a\u503c\u9ed8\u8ba4\u662f\u8986\u76d6<\/p>\n\n\n\n<ul><li>var = \u8981\u5b58\u50a8\u7684\u53d8\u91cf\u540d<\/li><li>value = \u8981\u5b58\u50a8\u7684\u503c<\/li><li>scope = \u8981\u5b58\u50a8\u7684\u53d8\u91cf\u57df<\/li><li>property = \u8981\u4fee\u6539\u7684\u53d8\u91cf\u540d, \u5fc5\u987b\u914d\u5408target<\/li><li>target = \u8981\u4fee\u6539\u7684\u5c5e\u6027\u6240\u5c5e\u5bf9\u8c61<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:set var=\"salary\" scope=\"session\" value=\"${2000*2}\"\/><\/code><\/pre>\n\n\n\n<h4>&lt;c:remove&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u8fd9\u4e2a\u6807\u7b7e\u7528\u4e8e\u5220\u9664\u6570\u636e<\/p>\n\n\n\n<ul><li>var = \u8981\u79fb\u9664\u7684\u53d8\u91cf\u540d\u79f0<\/li><li>scope = \u53d8\u91cf\u7684\u4f5c\u7528\u57df<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:remove var=\"salary\"\/><\/code><\/pre>\n\n\n\n<h4>&lt;c:catch&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u7528\u4e8e\u6355\u83b7\u6807\u7b7e\u5305\u88f9\u5185\u5bb9\u7684\u5f02\u5e38\u4fe1\u606f, \u4ec5\u6709\u4e00\u4e2a var \u5c5e\u6027\u4fdd\u5b58\u9519\u8bef\u4fe1\u606f, \u4e0d\u4f1a\u81ea\u52a8\u8f93\u51fa<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:catch var =\"catchException\">\n    &lt;% int x = 5\/0;%>\n&lt;\/c:catch><\/code><\/pre>\n\n\n\n<h4>&lt;c:if>\u6807\u7b7e<\/h4>\n\n\n\n<p>\u7528\u4e8e\u5224\u65ad\u5185\u5bb9, \u76f8\u5f53\u4e8eif<\/p>\n\n\n\n<ul><li>test = \u6761\u4ef6<\/li><li>var = \u5b58\u50a8\u7ed3\u679c\u7684\u53d8\u91cf\u540d<\/li><li>scope = \u7ed3\u679c\u7684\u4f5c\u7528\u57df<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:set var=\"salary\" scope=\"session\" value=\"${2000*2}\"\/>\n&lt;c:if test=\"${salary > 2000}\">\n    &lt;p>\u6211\u7684\u5de5\u8d44\u4e3a: &lt;c:out value=\"${salary}\"\/>&lt;p>\n&lt;\/c:if><\/code><\/pre>\n\n\n\n<h4>&lt;c:choose&gt;,&lt;c:when&gt;,&lt;c:otherwise&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u8fd9\u4e09\u4e2a\u6807\u7b7e\u7ec4\u5408\u8d77\u6765\u5b8c\u6210\u7684\u529f\u80fd\u662fjava\u4e2d\u7684switch<\/p>\n\n\n\n<ul><li>choose  &#8211;&gt;  switch<\/li><li>when  &#8211;&gt;  case<\/li><li>otherwise  &#8211;&gt;  default<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:set var=\"salary\" scope=\"session\" value=\"${2000*2}\"\/>\n&lt;p>\u4f60\u7684\u5de5\u8d44\u4e3a : &lt;c:out value=\"${salary}\"\/>&lt;\/p>\n&lt;c:choose>\n    &lt;c:when test=\"${salary &lt;= 0}\">\n       \u592a\u60e8\u4e86\u3002\n    &lt;\/c:when>\n    &lt;c:when test=\"${salary > 1000}\">\n       \u4e0d\u9519\u7684\u85aa\u6c34\uff0c\u8fd8\u80fd\u751f\u6d3b\u3002\n    &lt;\/c:when>\n    &lt;c:otherwise>\n        \u4ec0\u4e48\u90fd\u6ca1\u6709\u3002\n    &lt;\/c:otherwise>\n&lt;\/c:choose><\/code><\/pre>\n\n\n\n<h4>&lt;c:import&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e, \u4e3a\u5bfc\u5165\u6587\u4ef6\u7684\u6240\u6709\u5b57\u7b26, \u4ecehtml\u7684&lt;!doctype&gt;\u5230&lt;\/html&gt;<\/p>\n\n\n\n<ul><li>url  &#8211;&gt;  \u8d44\u6e90\u8def\u5f84<\/li><li>context  &#8211;&gt;  \u5f15\u5165\u5916\u90e8\u8d44\u6e90\u65f6\u6307\u5b9a\u4e00\u4e2a\u522b\u540d<\/li><li>var  &#8211;&gt;  \u5f15\u5165\u6587\u672c\u65f6, \u8bbe\u7f6e\u4e00\u4e2a\u53d8\u91cf\u540d<\/li><li>scope  &#8211;&gt;  var\u5c5e\u6027\u7684\u4f5c\u7528\u57df<\/li><li>varReader  &#8211;&gt; \u7528\u4e8e\u63d0\u4f9bjava.io.Reader\u5bf9\u8c61\u7684\u53d8\u91cf<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:import var=\"data\" url=\"https:\/\/www.52dixiaowo.com\"\/>\n&lt;c:out value=\"${data}\"\/><\/code><\/pre>\n\n\n\n<h4>&lt;c:forEach&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e\u662ffor\u5faa\u73af\u6807\u7b7e<\/p>\n\n\n\n<ul><li>items  &#8211;&gt;  \u521d\u59cb\u904d\u5386\u76ee\u6807<\/li><li>begin  &#8211;&gt;  \u5f00\u59cb\u4e0b\u6807<\/li><li>end  &#8211;&gt;  \u7ed3\u675f\u4e0b\u6807<\/li><li>step  &#8211;&gt;  \u6bcf\u6b21\u8fed\u4ee3\u6b65\u957f<\/li><li>var  &#8211;&gt;  \u904d\u5386\u63a7\u5236\u904d\u5386, \u521d\u59cb\u662fbegin\u6307\u5b9a\u7684\u503c<\/li><li>varStatus &#8211;&gt; \u5f53\u524d\u904d\u5386\u53d8\u91cf\u7684\u4fe1\u606f\u63cf\u8ff0<ol><li>index(\u6240\u5728\u4f4d\u7f6e\uff0c\u5373\u7d22\u5f15)<\/li><li>count(\u603b\u5171\u5df2\u8fed\u4ee3\u7684\u6b21\u6570)<\/li><li>first(\u662f\u5426\u4e3a\u7b2c\u4e00\u4e2a\u4f4d\u7f6e)<\/li><li>last(\u662f\u5426\u4e3a\u6700\u540e\u4e00\u4e2a\u4f4d\u7f6e)<\/li><\/ol><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:forEach var=\"i\" begin=\"1\" end=\"5\">\n   Item &lt;c:out value=\"${i}\"\/>&lt;p>\n&lt;\/c:forEach><\/code><\/pre>\n\n\n\n<h4>&lt;c:forTokens&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e, \u548c&lt;c:forEach&gt;\u76f8\u4f3c, \u6bd4\u5b83\u591a\u4e00\u4e2a\u5c5e\u6027<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><th><strong>\u5c5e\u6027<\/strong><\/th><th><strong>\u63cf\u8ff0<\/strong><\/th><th><strong>\u662f\u5426\u5fc5\u8981<\/strong><\/th><th><strong>\u9ed8\u8ba4\u503c<\/strong><\/th><\/tr><tr><td>delims<\/td><td>\u5206\u9694\u7b26<\/td><td>\u662f<\/td><td>\u65e0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u7528\u6cd5\u51e0\u4e4e\u548c&lt;c:forEach&gt;\u76f8\u540c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:forTokens items=\"google,baidu,taobao\" delims=\",\" var=\"name\">\n   &lt;c:out value=\"${name}\"\/>&lt;p>\n&lt;\/c:forTokens><\/code><\/pre>\n\n\n\n<h4 class=\"has-text-align-left\">&lt;c:url&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e\u751f\u6210\u4e00\u4e2a url<\/p>\n\n\n\n<ul><li>value  &#8211;&gt;  \u57fa\u7840url<\/li><li>context  &#8211;&gt;  tomcat\u5f53\u524d\u5e94\u7528\u865a\u62df\u76ee\u5f55<\/li><li>var  &#8211;&gt;  \u7528\u4e8e\u5b58\u50a8url\u7684\u53d8\u91cf, \u82e5\u503c\u6539\u53d8, \u4ee5\u4fbf\u81ea\u52a8\u91cd\u5199<\/li><li>scope  &#8211;&gt;  \u5b58\u50a8\u53d8\u91cf\u7684\u503c<\/li><\/ul>\n\n\n\n<p>\u503c\u5f97\u6ce8\u610f\u7684\u662f, \u4e00\u65e6\u66f4\u6539 var \u7684\u503c, \u90a3\u4e48\u539f\u5148\u8bbe\u7f6e\u7684context\u5c31\u4e0d\u751f\u6548\u4e86<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:url context=\"\/MyJSPProject\" value=\"\/file1.jsp\" var=\"myurl\"  scope=\"session\"\/>\n&lt;c:set var=\"myurl\" scope=\"session\" value=\"\/hello\"\/>\n&lt;a href=\"${sessionScope.myurl}\">jsp\u751f\u6210\u7684url&lt;\/a><\/code><\/pre>\n\n\n\n<h4>&lt;c:param&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e\u7528\u4e8e\u7ed9&lt;c:url&gt;\u589e\u52a0\u53c2\u6570, \u5fc5\u987b\u5199\u5728&lt;c:url&gt;\u6807\u7b7e\u4e2d<\/p>\n\n\n\n<ul><li>name  &#8211;&gt;  \u5c5e\u6027\u540d<\/li><li>value  &#8211;&gt;  \u5c5e\u6027\u503c<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:url var=\"myURL\" value=\"test.jsp\">\n        &lt;c:param name=\"name\" value=\"52\u7684\u5c0f\u7a9d\"\/>\n        &lt;c:param name=\"url\" value=\"www.52dixiaowo.com\"\/>\n &lt;\/c:url>\n      &lt;a href=\"\/&lt;c:out value=\"${myURL}\"\/>\">\n \u4f7f\u7528 &amp;lt;c:param&amp;gt; \u4e3a\u6307\u5b9aURL\u53d1\u9001\u4e24\u4e2a\u53c2\u6570\u3002&lt;\/a><\/code><\/pre>\n\n\n\n<h4>&lt;c:redirect&gt;\u6807\u7b7e<\/h4>\n\n\n\n<p>\u6b64\u6807\u7b7e\u4f1a\u81ea\u52a8\u8fdb\u884c\u91cd\u5b9a\u5411, \u53ef\u4ee5\u914d\u5408&lt;c:url&gt;\u4f7f\u7528<\/p>\n\n\n\n<ul><li>url &#8211;&gt; URL\u5730\u5740<\/li><li>context  &#8211;&gt;  tomcat\u5e94\u7528\u7684\u865a\u62df\u76ee\u5f55<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;c:redirect url=\"https:\/\/www.52dixiaowo.com\"\/><\/code><\/pre>\n\n\n\n<h2>\u683c\u5f0f\u5316\u6807\u7b7e\u5e93<\/h2>\n\n\n\n<p>\u683c\u5f0f\u5316\u5e76\u8f93\u51fa\u6587\u672c\u3001\u65e5\u671f\u3001\u65f6\u95f4\u3001\u6570\u5b57<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%@ taglib prefix=\"fmt\" \nuri=\"http:\/\/java.sun.com\/jsp\/jstl\/fmt\" %><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-formatnumber-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:formatNumber&gt;<\/a><\/td><td>\u4f7f\u7528\u6307\u5b9a\u7684\u683c\u5f0f\u6216\u7cbe\u5ea6\u683c\u5f0f\u5316\u6570\u5b57<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-parsenumber-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:parseNumber&gt;<\/a><\/td><td>\u89e3\u6790\u4e00\u4e2a\u4ee3\u8868\u7740\u6570\u5b57\uff0c\u8d27\u5e01\u6216\u767e\u5206\u6bd4\u7684\u5b57\u7b26\u4e32<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-formatdate-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:formatDate&gt;<\/a><\/td><td>\u4f7f\u7528\u6307\u5b9a\u7684\u98ce\u683c\u6216\u6a21\u5f0f\u683c\u5f0f\u5316\u65e5\u671f\u548c\u65f6\u95f4<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-parsedate-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:parseDate&gt;<\/a><\/td><td>\u89e3\u6790\u4e00\u4e2a\u4ee3\u8868\u7740\u65e5\u671f\u6216\u65f6\u95f4\u7684\u5b57\u7b26\u4e32<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-bundle-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:bundle&gt;<\/a><\/td><td>\u7ed1\u5b9a\u8d44\u6e90<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-setlocale-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:setLocale&gt;<\/a><\/td><td>\u6307\u5b9a\u5730\u533a<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-setbundle-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:setBundle&gt;<\/a><\/td><td>\u7ed1\u5b9a\u8d44\u6e90<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-timezone-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:timeZone&gt;<\/a><\/td><td>\u6307\u5b9a\u65f6\u533a<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-settimezone-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:setTimeZone&gt;<\/a><\/td><td>\u6307\u5b9a\u65f6\u533a<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-message-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:message&gt;<\/a><\/td><td>\u663e\u793a\u8d44\u6e90\u914d\u7f6e\u6587\u4ef6\u4fe1\u606f<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-format-requestencoding-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;fmt:requestEncoding&gt;<\/a><\/td><td>\u8bbe\u7f6erequest\u7684\u5b57\u7b26\u7f16\u7801<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2>SQL\u6807\u7b7e\u5e93<\/h2>\n\n\n\n<p>SQL\u6807\u7b7e\u5e93\u63d0\u4f9b\u4e86\u4e0e\u5173\u7cfb\u578b\u6570\u636e\u5e93\u8fdb\u884c\u4ea4\u4e92<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%@ taglib prefix=\"sql\" uri=\"http:\/\/java.sun.com\/jsp\/jstl\/sql\" %><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-setdatasource-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:setDataSource&gt;<\/a><\/td><td>\u6307\u5b9a\u6570\u636e\u6e90<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-query-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:query&gt;<\/a><\/td><td>\u8fd0\u884cSQL\u67e5\u8be2\u8bed\u53e5<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-update-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:update&gt;<\/a><\/td><td>\u8fd0\u884cSQL\u66f4\u65b0\u8bed\u53e5<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-param-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:param&gt;<\/a><\/td><td>\u5c06SQL\u8bed\u53e5\u4e2d\u7684\u53c2\u6570\u8bbe\u4e3a\u6307\u5b9a\u503c<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-dateparam-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:dateParam&gt;<\/a><\/td><td>\u5c06SQL\u8bed\u53e5\u4e2d\u7684\u65e5\u671f\u53c2\u6570\u8bbe\u4e3a\u6307\u5b9a\u7684java.util.Date&nbsp;\u5bf9\u8c61\u503c<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-sql-transaction-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;sql:transaction&gt;<\/a><\/td><td>\u5728\u5171\u4eab\u6570\u636e\u5e93\u8fde\u63a5\u4e2d\u63d0\u4f9b\u5d4c\u5957\u7684\u6570\u636e\u5e93\u884c\u4e3a\u5143\u7d20\uff0c\u5c06\u6240\u6709\u8bed\u53e5\u4ee5\u4e00\u4e2a\u4e8b\u52a1\u7684\u5f62\u5f0f\u6765\u8fd0\u884c<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2>XML\u6807\u7b7e\u5e93<\/h2>\n\n\n\n<p>\u63d0\u4f9b\u4e86\u521b\u5efa\u548c\u64cd\u4f5cXML\u6587\u6863\u7684\u6807\u7b7e<\/p>\n\n\n\n<p>\u5728\u4f7f\u7528xml\u6807\u7b7e\u524d\uff0c\u4f60\u5fc5\u987b\u5c06XML \u548c XPath \u7684\u76f8\u5173\u5305\u62f7\u8d1d\u81f3\u4f60\u7684&lt;Tomcat \u5b89\u88c5\u76ee\u5f55&gt;\\lib\u4e0b:<\/p>\n\n\n\n<ul><li><strong>XercesImpl.jar<\/strong>\u4e0b\u8f7d\u5730\u5740\uff1a&nbsp;<a href=\"http:\/\/www.apache.org\/dist\/xerces\/j\/\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/www.apache.org\/dist\/xerces\/j\/<\/a><\/li><li><strong>xalan.jar<\/strong>\u4e0b\u8f7d\u5730\u5740\uff1a&nbsp;<a href=\"http:\/\/xml.apache.org\/xalan-j\/index.html\" target=\"_blank\" rel=\"noreferrer noopener\">http:\/\/xml.apache.org\/xalan-j\/index.html<\/a><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%@ taglib prefix=\"x\" uri=\"http:\/\/java.sun.com\/jsp\/jstl\/xml\" %><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-out-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:out&gt;<\/a><\/td><td>\u4e0e&lt;%= &#8230; &gt;,\u7c7b\u4f3c\uff0c\u4e0d\u8fc7\u53ea\u7528\u4e8eXPath\u8868\u8fbe\u5f0f<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-parse-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:parse&gt;<\/a><\/td><td>\u89e3\u6790 XML \u6570\u636e<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-set-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:set&gt;<\/a><\/td><td>\u8bbe\u7f6eXPath\u8868\u8fbe\u5f0f<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-if-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:if&gt;<\/a><\/td><td>\u5224\u65adXPath\u8868\u8fbe\u5f0f\uff0c\u82e5\u4e3a\u771f\uff0c\u5219\u6267\u884c\u672c\u4f53\u4e2d\u7684\u5185\u5bb9\uff0c\u5426\u5219\u8df3\u8fc7\u672c\u4f53<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-foreach-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:forEach&gt;<\/a><\/td><td>\u8fed\u4ee3XML\u6587\u6863\u4e2d\u7684\u8282\u70b9<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-choose-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:choose&gt;<\/a><\/td><td>&lt;x:when&gt;\u548c&lt;x:otherwise&gt;\u7684\u7236\u6807\u7b7e<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-choose-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:when&gt;<\/a><\/td><td>&lt;x:choose&gt;\u7684\u5b50\u6807\u7b7e\uff0c\u7528\u6765\u8fdb\u884c\u6761\u4ef6\u5224\u65ad<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-choose-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:otherwise&gt;<\/a><\/td><td>&lt;x:choose&gt;\u7684\u5b50\u6807\u7b7e\uff0c\u5f53&lt;x:when&gt;\u5224\u65ad\u4e3afalse\u65f6\u88ab\u6267\u884c<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-transform-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:transform&gt;<\/a><\/td><td>\u5c06XSL\u8f6c\u6362\u5e94\u7528\u5728XML\u6587\u6863\u4e2d<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-xml-param-tag.html\" target=\"_blank\" rel=\"noreferrer noopener\">&lt;x:param&gt;<\/a><\/td><td>\u4e0e&lt;x:transform&gt;\u5171\u540c\u4f7f\u7528\uff0c\u7528\u4e8e\u8bbe\u7f6eXSL\u6837\u5f0f\u8868<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2>JSTL\u51fd\u6570\u6807\u7b7e\u5e93<\/h2>\n\n\n\n<p>\u901a\u7528\u7684\u5b57\u7b26\u4e32\u5904\u7406\u51fd\u6570<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;%@ taglib prefix=\"fn\" uri=\"http:\/\/java.sun.com\/jsp\/jstl\/functions\" %><\/code><\/pre>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><tbody><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-contains.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:contains()<\/a><\/td><td>\u6d4b\u8bd5\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u6307\u5b9a\u7684\u5b50\u4e32<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-containsignoreCase.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:containsIgnoreCase()<\/a><\/td><td>\u6d4b\u8bd5\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u662f\u5426\u5305\u542b\u6307\u5b9a\u7684\u5b50\u4e32\uff0c\u5927\u5c0f\u5199\u4e0d\u654f\u611f<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-endswith.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:endsWith()<\/a><\/td><td>\u6d4b\u8bd5\u8f93\u5165\u7684\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u6307\u5b9a\u7684\u540e\u7f00\u7ed3\u5c3e<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-escapexml.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:escapeXml()<\/a><\/td><td>\u8df3\u8fc7\u53ef\u4ee5\u4f5c\u4e3aXML\u6807\u8bb0\u7684\u5b57\u7b26<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-indexof.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:indexOf()<\/a><\/td><td>\u8fd4\u56de\u6307\u5b9a\u5b57\u7b26\u4e32\u5728\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u51fa\u73b0\u7684\u4f4d\u7f6e<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-join.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:join()<\/a><\/td><td>\u5c06\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u5408\u6210\u4e00\u4e2a\u5b57\u7b26\u4e32\u7136\u540e\u8f93\u51fa<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-length.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:length()<\/a><\/td><td>\u8fd4\u56de\u5b57\u7b26\u4e32\u957f\u5ea6<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-replace.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:replace()<\/a><\/td><td>\u5c06\u8f93\u5165\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u7684\u4f4d\u7f6e\u66ff\u6362\u4e3a\u6307\u5b9a\u7684\u5b57\u7b26\u4e32\u7136\u540e\u8fd4\u56de<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-split.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:split()<\/a><\/td><td>\u5c06\u5b57\u7b26\u4e32\u7528\u6307\u5b9a\u7684\u5206\u9694\u7b26\u5206\u9694\u7136\u540e\u7ec4\u6210\u4e00\u4e2a\u5b50\u5b57\u7b26\u4e32\u6570\u7ec4\u5e76\u8fd4\u56de<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-startswith.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:startsWith()<\/a><\/td><td>\u6d4b\u8bd5\u8f93\u5165\u5b57\u7b26\u4e32\u662f\u5426\u4ee5\u6307\u5b9a\u7684\u524d\u7f00\u5f00\u59cb<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-substring.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:substring()<\/a><\/td><td>\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u5b50\u96c6<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-substringafter.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:substringAfter()<\/a><\/td><td>\u8fd4\u56de\u5b57\u7b26\u4e32\u5728\u6307\u5b9a\u5b50\u4e32\u4e4b\u540e\u7684\u5b50\u96c6<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-substringbefore.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:substringBefore()<\/a><\/td><td>\u8fd4\u56de\u5b57\u7b26\u4e32\u5728\u6307\u5b9a\u5b50\u4e32\u4e4b\u524d\u7684\u5b50\u96c6<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-tolowercase.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:toLowerCase()<\/a><\/td><td>\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u8f6c\u4e3a\u5c0f\u5199<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-touppercase.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:toUpperCase()<\/a><\/td><td>\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u8f6c\u4e3a\u5927\u5199<\/td><\/tr><tr><td><a href=\"https:\/\/www.runoob.com\/jsp\/jstl-function-trim.html\" target=\"_blank\" rel=\"noreferrer noopener\">fn:trim()<\/a><\/td><td>\u79fb\u9664\u9996\u5c3e\u7684\u7a7a\u767d\u7b26<\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>JSTL\u5168\u79f0\u4e3aJSP Standard Tag Library\uff0c\u5373JSP\u6807\u51c6\u6807\u7b7e\u5e93\u3002\u6807\u51c6\u6807\u7b7e\u5e93\u53ef\u4ee5\u63d0\u9ad8JSP\u9875&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/java\/post-1090.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">JSTL\u6807\u51c6\u6807\u7b7e\u5e93<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1090"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/comments?post=1090"}],"version-history":[{"count":11,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1090\/revisions"}],"predecessor-version":[{"id":1331,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/posts\/1090\/revisions\/1331"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/media?parent=1090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/categories?post=1090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/java\/wp-json\/wp\/v2\/tags?post=1090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}