JSP标签使用案例

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JSP标签

最近无聊，在网上看到很多JSP的博客，各种如何标签定义，恶心到不行...一怒之下写了几百行代码，常用的标签都写了实际使用的案例，效果图来一张

大致就这样了，下面贴代码

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>(); // Setset.add("One");set.add("One");set.add("Two");set.add("Three");set.add("Set");Map<String, String> map = new HashMap<String, String>(); // Mapmap.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Listusers.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;}}

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"}, };@Overridepublic Object[][] getContents() {return contents;}}

代码都是运行过的应该是没有错误的...

祝大家工作顺利，天天开心!

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