JSP标签

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JSP页面代码

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>  <%@ page import="com.dfs.pojo.*" %>  <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>  <%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt" %>  <%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn" %>  <%  String path = request.getContextPath();  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  %>    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  <html>    <head>      <base href="<%=basePath%>">          <title>JSP标签</title>    </head>     <style type="text/css">      #ctrlDiv{          width: 100% ;          height: 1500px ;          background-color: yellow ;      }      .tagDiv1{          width: 40% ;          height: 1500px ;          float: left ;          background-color: #E8F2FE ;      }      .tagDiv2{          width: 30% ;          height: 1500px ;          float: left ;          background-color: #F0F0F0 ;      }      .tagDiv3{          width: 30% ;          height: 1500px ;          float: left ;          background-color: #99BFF1 ;      }      h3{          color: red ;      }    </style>     <body>    <%          int [] ages = {1,2,3,4,5,6} ;                    List<String> list = new ArrayList<String>() ;          list.add("hello1") ;          list.add("hello2") ;          list.add("hello3") ;                    // 重复内容不被遍历          Set<String> set = new TreeSet<String>(); // Set          set.add("One");          set.add("One");          set.add("Two");          set.add("Three");          set.add("Set");                    Map<String, String> map = new HashMap<String, String>(); // Map          map.put("1", "黄彪");          map.put("2", "丫头");          map.put("3", "哥哥");          map.put("4", "笨蛋");                    List<User> users = new ArrayList<User>(); // JavaBean的List          users.add(new User("黄彪", "xxxxxx"));          users.add(new User("昊天", "xxxxxx"));          users.add(new User("姐姐", "yyyyyy"));          users.add(new User("丫头", "zzzzzz"));                    session.setAttribute("users", users); // 添加到session      %>      <div id="ctrlDiv">          <div class="tagDiv1">              <center>                  <h1>数据显示C标签</h1>                  <h3>C:OUT标签</h3>                  <c:out value="${null}" default="没有数据"></c:out><br/>                  <c:out value="<要显示的数据对象（未使用转义字符）>" escapeXml="true" default="默认值"/><br/>                  <c:out value="<要显示的数据对象（使用转义字符）>" escapeXml="false" default="默认值"/><br/>                                    <h3>C:SET标签</h3>                  <c:set var="salary" scope="session" value="${2000*2}"/>                  <c:out value="${salary}"/><br/>                                    <h3>C:REMOVE标签</h3>                  <c:remove var="salary"/>                  <c:out value="${salary}" default="Salary数据被删除"/><br/>                                    <h3>C:CATCH标签</h3>                  <c:catch var="catchException">                      <% int i = 1 / 0 ; %>                  </c:catch>                  <c:if test="${catchException!=null}">                      异常：${catchException}<br/>                      信息：${catchException.message}                  </c:if><br/>                                    <h3>C:IF标签</h3>                  <c:set var="mysalary" scope="session" value="${3500*2}"/>                  <c:if test="${mysalary>5000}">                      我们涨工资了：                      <c:out value="${mysalary}"/>                  </c:if><br/>                                    <h3>C:CHOOSE标签</h3>                  <c:choose>                      <c:when test="${mysalary<0}">                          啃老族...                      </c:when>                      <c:when test="${mysalary<5000}">                          月光族...                      </c:when>                      <c:otherwise>                          逆天了...                      </c:otherwise>                  </c:choose><br/>                                    <h3>C:IMPORT标签</h3>                  <c:import var="data" url="http://www.baidu.com"/>                  <c:out value="看代码..."/>                  <!-- <c:out value="${data}"></c:out> --><br/>                                    <h3>C:PARAM实例</h3>                  <c:url var="myURL" value="main.jsp">                      <c:param name="name" value="Runoob"/>                      <c:param name="url" value="www.runoob.com"/>                  </c:url>                  <a href="/<c:out value="${myURL}"/>">为指定URL发送两个参数</a>                                    <h3>C:forEach循环遍历</h3>                  <c:forEach var="ageArray" items="<%=ages %>">                      <c:out value="${ageArray}"/>                  </c:forEach><br/>                  <c:forEach var="nameList" items="<%=list %>">                      <c:out value="${nameList}" />                  </c:forEach><br/>                  <c:forEach var="nameSet" items="<%=set %>">                      <c:out value="${nameSet}" />                  </c:forEach>                  <table>                      <tr>                          <th>KEY</th>                          <th>VALUE</th>                      </tr>                      <c:forEach var="entry" items="<%=map %>">                          <tr>                              <td><c:out value="${entry.key}"/></td>                              <td><c:out value="${entry.value}"/></td>                          </tr>                      </c:forEach>                  </table>                  <table>                      <tr>                          <th>姓名</th>                          <th>说明</th>                      </tr>                      <c:forEach var="user" items="${users}">                          <tr>                              <td><c:out value="${user.name}"/></td>                              <td><c:out value="${user.say}"/></td>                          </tr>                      </c:forEach>                  </table>                                    <h3>c:forTokens标签</h3>                  <c:forTokens var="name" items="hello1,hello2,hello3" delims=",">                      <c:out value="${name}" />                  </c:forTokens>                  <c:forTokens var="heList" items="${list}" delims=",">                      <c:out value="${heList}" />                  </c:forTokens>                                    <h3>c:REDIRECT标签</h3>                  自动跳转到指定的URL              </center>          </div>          <div class="tagDiv2">              <center>              <h1>数据格式FMT标签</h1>              <h3>fmt:formatNumber标签</h3>              <c:set var="balance" value="120000.2309" />              格式化数字 (1): <fmt:formatNumber value="${balance}" type="currency"/><br/>              格式化数字 (2): <fmt:formatNumber type="number" maxIntegerDigits="3" value="${balance}" /><br/>              格式化数字 (3): <fmt:formatNumber type="number" maxFractionDigits="3" value="${balance}" /><br/>              格式化数字 (4): <fmt:formatNumber type="number" groupingUsed="false" value="${balance}" /><br/>              格式化数字 (5): <fmt:formatNumber type="percent" maxIntegerDigits="3" value="${balance}" /><br/>              格式化数字 (6): <fmt:formatNumber type="percent" minFractionDigits="10" value="${balance}" /><br/>              格式化数字 (7): <fmt:formatNumber type="percent" maxIntegerDigits="3" value="${balance}" /><br/>              格式化数字 (8): <fmt:formatNumber type="number" pattern="###.###E0" value="${balance}" /><br/>              美元 :<fmt:setLocale value="en_US"/>              <fmt:formatNumber value="${balance}" type="currency"/><br/>                            <h3>fmt:parseNumber标签</h3>              <fmt:parseNumber var="i" type="number" value="${balance}" />              数字解析 (1) :<c:out value="${i}"/><br/>              <fmt:parseNumber var="j" integerOnly="true" type="number" value="${balance}" />              数字解析 (1) :<c:out value="${j}"/><br/>                            <h3>fmt:formatDate标签</h3>              <c:set var="now" value="<%=new java.util.Date() %>"></c:set>              普通输出：<c:out value="${now}"/><br/>              TIME格式：<fmt:formatDate type="time" value="${now}" /><br/>              DATE格式：<fmt:formatDate type="date" value="${now}" /><br/>              BOTH格式：<fmt:formatDate type="both" value="${now}" /><br/>              <fmt:formatDate type="both" dateStyle="short" timeStyle="short" value="${now}" /><br/>              <fmt:formatDate type="both" dateStyle="medium" timeStyle="medium" value="${now}" /><br/>              <fmt:formatDate type="both" dateStyle="long" timeStyle="long" value="${now}" /><br/>              格式化日期：              <fmt:formatDate pattern="yyyy-MM-dd" value="${now}"/><br/>              <fmt:formatDate pattern="yyyy-MM-dd hh:mm:ss" value="${now}"/><br/>              <fmt:formatDate pattern="yyyy/MM/dd" value="${now}"/><br/>                            <h3>fmt:parseDate标签</h3>              <c:set var="myDate" value="20-10-2015" />              <fmt:parseDate value="${myDate}" var="parsedEmpDate" pattern="dd-MM-yyyy" />              解析后的日期为: <c:out value="${parsedEmpDate}" /><br/>                            <h3>fmt:bundle标签</h3>              <fmt:bundle basename="com.dfs.pojo.ExcmpleList" prefix="count.">                  <fmt:message key="one" />                  <fmt:message key="two" />                  <fmt:message key="three" />              </fmt:bundle><br/>              <fmt:bundle basename="com.dfs.pojo.ExcmpleList">                  <fmt:message key="count.one" />                  <fmt:message key="count.two" />                  <fmt:message key="count.three" />              </fmt:bundle><br/>                            <h3>fmt:setBundle标签</h3>              <fmt:setBundle basename="com.dfs.pojo.ExcmpleList" var="lang"/>              <fmt:message key="count.one" bundle="${lang}"/><br/>              <fmt:message key="count.two" bundle="${lang}"/><br/>              <fmt:message key="count.three" bundle="${lang}"/><br/>                            <h3>Request请求编码</h3>              UTF-8              <fmt:requestEncoding value="utf-8"/><br/>                            <h3>fmt:timeZone标签</h3>              <c:set var="mynow" value="<%=new java.util.Date()%>" />              <table border="1" width="100%">                <tr>                  <td width="100%" colspan="2" bgcolor="#0000FF">                    <p align="center">                      <b>                        <font color="#FFFFFF" size="4">Formatting:                        <fmt:formatDate value="${mynow}" type="both"                        timeStyle="long" dateStyle="long" />                        </font>                      </b>                    </p>                  </td>                </tr>                <tr>                  <td width="51%">                    <c:out value="${zone}" />                  </td>                  <td width="49%">                    <fmt:timeZone value="${zone}">                      <fmt:formatDate value="${mynow}" timeZone="${zn}" type="both" />                    </fmt:timeZone>                  </td>                </tr>              </table>              </center>          </div>          <div class="tagDiv3">              <center>              <h1>JSTL函数</h1>              <h3>判断包含函数</h3>              <c:set var="theString" value="I am from China" />              <c:if test="${fn:contains(theString,'China')}">                  找出China              </c:if><br/>              <c:if test="${fn:containsIgnoreCase(theString,'CHINA')}">                  找出CHINA              </c:if><br/>                            <h3>判断开头结尾函数</h3>              <c:if test="${fn:endsWith(theString,'na')}">                  以na结尾              </c:if>              <c:if test="${fn:startsWith(theString,'I')}">                  以I开头              </c:if>                            <h3>判断长度函数</h3>              <c:out value="${fn:length(theString)}" />                            <h3>分割字符串函数</h3>              <c:set var="newStr" value="${fn:split(theString,' ')}" />              <c:set var="strNew" value="${fn:join(newStr, '-')}" />              <c:out value="${strNew}" /><br/>                            <h3>大小写转换函数</h3>              ${fn:toLowerCase(strNew)}<br/>              ${fn:toUpperCase(strNew)}<br/>                            <h3>去空格函数</h3>              ${fn:trim(theString)}<br/>                            <h3>替换函数</h3>              ${fn:replace(theString,' ','-')}              </center>          </div>      </div>          </body>  </html>  两个POJO类package com.dfs.pojo;    public class User {      private String name ;      private String say ;      public User (String name,String say){          this.name = name ;          this.say = say ;      }      public String getName() {          return name;      }      public void setName(String name) {          this.name = name;      }      public String getSay() {          return say;      }      public void setSay(String say) {          this.say = say;      }    }

两个POJO类

package com.dfs.pojo;    public class User {      private String name ;      private String say ;      public User (String name,String say){          this.name = name ;          this.say = say ;      }      public String getName() {          return name;      }      public void setName(String name) {          this.name = name;      }      public String getSay() {          return say;      }      public void setSay(String say) {          this.say = say;      }    }

package com.dfs.pojo;    import java.util.ListResourceBundle;    public class ExcmpleList extends ListResourceBundle {       static final Object[][] contents = {            {"count.one", "One"},            {"count.two", "Two"},            {"count.three", "Three"},       };      @Override      public Object[][] getContents() {          return contents;      }  }

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