jsp自定义c：if标签

java代码：

package com.zx.tag;

import java.io.IOException;
import java.io.StringWriter;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.SimpleTagSupport;

public class IfTag extends SimpleTagSupport {
	//1.获取属性名为test的属性值
	
	private boolean test;

	public void setAbc(boolean test) {
		this.test = test;
	}

	@Override
	public void doTag() throws JspException, IOException {
		//2.判断属性值是否为true
		if(test) {
			//3.根据判断结果决定是否显示标签体的内容
			StringWriter sw = new StringWriter();
			this.getJspBody().invoke(sw);
			this.getJspContext().getOut().write(sw.toString());
		}
	}
}

tld代码：

    自定义标签
	zdytag
	1.0
	
	zy
	http://www.zhuoxun/jxb
	
		这个标签用来将标签体的内容小写改大写
    	if
    	com.zx.tag.IfTag
    	scriptless
    	
    	
    		条件判断
    		abc
    		
    		true
    		
    		true
    	
	

html代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://www.zhuoxun/jxb" prefix="zy"%>







	<%
		request.setAttribute("address", "TianJin");
		String address = "TianJin";
		request.setAttribute("sex", "man");
	%>
	
	
	
	
	性别：
	
		男