jsp自定义标签

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jsp自定义标签页tag

1、WEB-INF下新建一个tags文件夹，创建tag文件

2、index.jsp文件头部添加自定义标签库

<%@ taglib tagdir="/WEB-INF/tags" prefix="mytags"%>

div.tag代码如下

<%@ tag pageEncoding="UTF-8"  %><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%><%@ attribute name="color" type="java.lang.String" required="true"%><%if (color != "red") {color = "black";}else{}%><style>#red{color: red;}</style><div id="${color}">divContent</div>

a.tag代码如下

<%@ tag pageEncoding="UTF-8"  %><a><jsp:doBody></jsp:doBody></a>

index.jsp中使用

<body>    <mytags:div color="red">    </mytags:div>    <mytags:a>http://www.baidu.com</mytags:a></body>

效果

jsp自定义功能标签tld

1、在WEB-INF下新建tlds文件夹，创建fnc.tld文件

2、index.jsp头部添加声明

<%@ taglib prefix="fnc" uri="/WEB-INF/tlds/fnc.tld" %>

fnc.tld代码如下

<?xml version="1.0" encoding="UTF-8" ?><taglib xmlns="http://java.sun.com/xml/ns/j2ee"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd"  version="2.0">      <description>JSTL 1.1 functions library</description>  <display-name>JSTL functions cms</display-name>  <tlib-version>1.1</tlib-version>  <short-name>fnc</short-name>  <uri>http://java.sun.com/jsp/jstl/functionsc</uri>  <function>    <description>获取用户列表</description>    <name>getUsers</name>    <function-class>com.helper.UserHelper</function-class>    <function-signature>java.util.List getUsers()</function-signature>    <example>${fnc:getUsers()}</example>    </function>  </taglib>

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