1.首先编写一个MyTag的类
package ssm.crm.utils;
import java.io.IOException;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.TagSupport;
public class MyTag extends TagSupport {
@Override
public int doStartTag() throws JspException {
JspWriter out = super.pageContext.getOut();
try {
out.print("<span>这个是自定义标签输出的内容</span>");
} catch (IOException e) {
e.printStackTrace();
}
return super.doStartTag();
}
}
2.然后编写一个myTag.tld
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN"
"http://java.sun.com/dtd/web-jsptaglibrary_1_2.dtd">
<taglib>
<tlib-version>2.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>myTag</short-name>
<!--自定义标签地址 -->
<uri>http://xiayubao/myTag/</uri>
<tag>
<name>out</name>
<tag-class>ssm.crm.utils.MyTag</tag-class>
<body-content>JSP</body-content>
</tag>
</taglib>
新建一个myTag.jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page trimDirectiveWhitespaces="true"%>
<%@ taglib prefix="myTag" uri="http://xiayubao/myTag/"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>自定义标签的使用</title>
</head>
<body>
<myTag:out></myTag:out>
</body>
</html>
在控制层进行测试
package ssm.crm.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
//客户信息请求处理
@Controller
@RequestMapping("customer")
public class CustomerController {
//显示用户列表
@RequestMapping("list")
public String List() {
return "customer";
}
//测试自定义标签的使用
@RequestMapping("myTag")
public String myTag() {
return "myTag";
}
}
测试结果: