1 package cn.itcast.web.tag;
2
3 import java.io.IOException;
4 import java.io.StringWriter;
5 import java.util.Date;
6
7 import javax.servlet.jsp.JspException;
8 import javax.servlet.jsp.tagext.JspFragment;
9 import javax.servlet.jsp.tagext.SimpleTagSupport;
10
11 //开发带属性的内容
12 public class SimpleTagDemo1 extends SimpleTagSupport {
13
14 private int count;
15 private Date date;
16
17 public void setDate(Date date) {
18 this.date = date;
19 }
20
21
22 public void setCount(int count){
23 this.count=count;
24 }
25
26
27 @Override
28 public void doTag() throws JspException, IOException {
29 JspFragment jf = this.getJspBody();
30 this.getJspContext().getOut().write(date.toLocaleString()+"<br/>");
31 for (int i = 0; i < count; i++) {
32 jf.invoke(null);
33 }
34 }
35
36
37
38 }
SimpleTagDemo1
1 <?xml version="1.0" encoding="UTF-8" ?> 2 3 4 <taglib xmlns="http://java.sun.com/xml/ns/j2ee" 5 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 6 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd" 7 version="2.0"> 8 <description>A tag library exercising SimpleTag handlers.</description> 9 <tlib-version>1.0</tlib-version> 10 <short-name>itcast</short-name> 11 <uri>/itcast</uri> 12 13 <tag> 14 <name>SimpleTagDemo1</name> 15 <tag-class>cn.itcast.web.tag.SimpleTagDemo1</tag-class> 16 <body-content>scriptless</body-content> 17 18 <attribute> 19 <name>count</name> 20 <required>true</required> 21 <rtexprvalue>true</rtexprvalue> 22 </attribute> 23 <attribute> 24 <name>date</name> 25 <required>true</required> 26 <rtexprvalue>true</rtexprvalue> 27 </attribute> 28 </tag> 29 30 31 32 </taglib>
itcast.tld
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib uri="/itcast" prefix="itcast" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>开发带属性的内容</title>
</head>
<body>
<itcast:SimpleTagDemo1 count="9" date="<%=new Date() %>">
Zero<br/>
</itcast:SimpleTagDemo1>
</body>
</html>
开发带属性的标签
时间： 2024-10-13 17:09:25