简单实用jstl实现代码编写

简单实用jstl实现代码编写-LMLPHP

package com.ceshi;

import java.io.IOException;

import javax.servlet.jsp.JspException;

import javax.servlet.jsp.tagext.*;

public class TestTag extends SimpleTagSupport {

    private String outerTagName="p";

    public String getOuterTagName() {

        return outerTagName;

    }

    public void setOuterTagName(String outerTagName) {

        this.outerTagName = outerTagName;

    }

    private int count;

    public int getCount() {

        return count;

    }

    public void setCount(int count) {

        this.count = count;

    }

    @Override

    public void doTag() throws JspException, IOException {

        JspFragment jsp=this.getJspBody();

        this.getJspContext().getOut().write("<"+outerTagName+">");

        for(int i=0; i<count;i++){

            jsp.invoke(null);

        }

        this.getJspContext().getOut().write("</"+outerTagName+">");

    }

}

<?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">

  <description>JSTL 1.1 core library</description>

  <display-name>JSTL core</display-name>

  <tlib-version>1.1</tlib-version>

  <short-name>m</short-name>

  <uri>http://www.baidu.com/myjstl</uri>

   <tag>

    <description>

    </description>

    <name>show</name>

    <tag-class>com.ceshi.TestTag</tag-class>

    <body-content>scriptless</body-content>

    <attribute>

        <description>

Name of the exported scoped variable for the

exception thrown from a nested action. The type of the

scoped variable is the type of the exception thrown.

        </description>

        <name>outerTagName</name>

        <required>false</required>

        <rtexprvalue>false</rtexprvalue>

    </attribute>

     <attribute>

        <description>

Name of the exported scoped variable for the

exception thrown from a nested action. The type of the

scoped variable is the type of the exception thrown.

        </description>

        <name>count</name>

        <required>true</required>

        <rtexprvalue>false</rtexprvalue>

    </attribute>

  </tag>

  <tag>

  </tag>

</taglib>

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

    pageEncoding="ISO-8859-1"%>

<%@taglib prefix="m" uri="http://www.baidu.com/myjstl" %>

<!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=ISO-8859-1">

<title>Insert title here</title>

</head>

<body>

<m:show outerTagName="h4" count="2">

hahahha<br>

</m:show>

</body>

</html>

实现效果如下：

简单实用jstl实现代码编写-LMLPHP