自定义标签<1>

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HelloWorldTag.java

package com.ruanku.tag;import java.io.IOException;import javax.servlet.jsp.JspException;import javax.servlet.jsp.JspWriter;import javax.servlet.jsp.tagext.TagSupport;public class HelloWorldTag extends TagSupport{/** *  */private static final long serialVersionUID = 1L;@Overridepublic int doStartTag() throws JspException {JspWriter out=this.pageContext.getOut();try {out.println("这是 jsp标签");} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return TagSupport.SKIP_BODY;//直接结束标签}}

cc.tld

<?xml version="1.0" encoding="UTF-8" ?><taglib xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"    version="2.1">    <tlib-version>1.0</tlib-version>    <short-name>ccTag</short-name>    <tag>    <name>helloWorld</name>    <tag-class>com.ruanku.tag.HelloWorldTag</tag-class>    <body-content>empty</body-content>    </tag>  </taglib>

HelloWorldTag.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><%@ taglib prefix="cc" uri="/WEB-INF/cc.tld" %><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>Insert title here</title></head><body><cc:helloWorld/></body></html>

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