自定义标签-白红宇

usertag.tld


     
     
      
       1.0
      
      
       2.0
      
      
       baoyou
      
      
       /usertag
      
          
       
        userinfo
           
       
        com.baoyou.test.autotag.UserTag
           
       
        empty
           
               
        
         user
                 
        
         false
                 
        
         true

web.xml


     
     	 	    
            
                
        
         /usertag
                 
        
         /WEB-INF/usertag.tld

public class User {	private int userId;	private String username;	private String password;		public int getUserId() {		return userId;	}	public void setUserId(int userId) {		this.userId = userId;	}	public String getUsername() {		return username;	}	public void setUsername(String username) {		this.username = username;	}	public String getPassword() {		return password;	}	public void setPassword(String password) {		this.password = password;	}	 }

package com.baoyou.test.autotag; import javax.servlet.jsp.JspException;import javax.servlet.jsp.JspWriter;import javax.servlet.jsp.tagext.TagSupport;public class UserTag extends TagSupport{ 	private static final long serialVersionUID = 1L;		private User user;	 	@Override	public int doStartTag() throws JspException { 		 JspWriter out = this.pageContext.getOut();		 try{		 if (user == null) { 				out.println("No UserInfo Found...");		 }		 out.println("
     
      ");         out.println("
        ");         out.println("
");         out.println("
");         out.println("
");         out.println("
        ");         out.println("
");         out.println("
");         out.println("
");         out.println("
        ");         out.println("
");         out.println("
");         out.println("
");         out.println("
                     userid:         " + user.getUserId() + "        
               username:         " + user.getUsername() + "        
               password:         " + user.getPassword() + "        
      
     
");		 }catch(Exception e){			 throw  new JspException(e.getMessage());		 }		return SKIP_BODY;	}		@Override	public int doEndTag() throws JspException { 		 return EVAL_PAGE;	}	public User getUser() {		return user;	}	public void setUser(User user) {		this.user = user;	}}

<%@ page language="java" import="java.util.*,com.baoyou.test.autotag.*" pageEncoding="utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><%@ taglib uri="/usertag" prefix="baoyou"%>       My JSP 'index.jsp' starting page        <% User user = new User();  	 user.setUserId(1); 	 user.setUsername("baoyou"); 	 user.setPassword("baoyou");      pageContext.setAttribute("userinfo", user);      %>

捐助开发者

在兴趣的驱动下,写一个免费的东西，有欣喜，也还有汗水，希望你喜欢我的作品，同时也能支持一下。当然，有钱捧个钱场（右上角的爱心标志，支持支付宝和PayPal捐助），没钱捧个人场，谢谢各位。

谢谢您的赞助，我会做的更好！

userid:	" + user.getUserId() + "
username:	" + user.getUsername() + "
password:	" + user.getPassword() + "