JSP之JavaBean-白红宇

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JSP之JavaBean

阅读量：5266 次

发布时间：2019-06-14

本文共 3485 字，大约阅读时间需要 11 分钟。

package com.po;public class Users {	private String username;	private String password;	public Users(){			}	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;	}	}

<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%><%@ page import="com.po.Users" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              My JSP 'index.jsp' starting page	
     	
     	
         	
     	
     	
               普通方式使用JavaBean
    
     
    <%    	Users user = new Users();    	user.setName("admin");    	user.setPassword("123456");    %>    <%=user.getName() %>

//login.jsp<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              My JSP 'login.jsp' starting page    	
     	
     	
         	
     	
     	
               
         	
      
    		                   			         用户名：     			             		        
    		            			         密码：

//dologin.jsp<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              My JSP 'index.jsp' starting page	
     	
     	
         	
     	
     	
               useBean标签使用JavaBean
    
     
    <%--         --%>    
         <%--    	
          --%>    <%--    	
          --%>          <%--      
          
          --%>          
          
               <%--使用传统表达式的方法获取username与password --%>          <%--     	<%=myUser.getUsername() %>     	<%=myUser.getPassword() %>      --%>    用户名：
     
    密码：
     
        測试作用域    <%    	request.getRequestDispatcher("testScope.jsp").forward(request, response);    %>

//testScope.jsp<%@ page language="java" import="java.util.*" contentType="text/html; charset=utf-8"%><%@ page import="com.po.Users" %><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>              My JSP 'testScope.jsp' starting page    	
     	
     	
         	
     	
     	
             	<%--     
         <%=((Users)application.getAttribute("myUser")).getUsername() %>    <%=((Users)application.getAttribute("myUser")).getPassword() %>    --%>    <%--     
         <%=((Users)session.getAttribute("myUser")).getUsername() %>    <%=((Users)session.getAttribute("myUser")).getPassword() %>    --%>        <%--     
         <%=((Users)request.getAttribute("myUser")).getUsername() %>    <%=((Users)request.getAttribute("myUser")).getPassword() %>    --%>        
         <%    	String username = "";    	String password = "";    	if(request.getAttribute("myUser")!=null){    		username = ((Users)request.getAttribute("myUser")).getUsername();    		password = ((Users)request.getAttribute("myUser")).getPassword();    	}    	    %>    用户名：<%=username %>    密码：<%=password %>

转载于:https://www.cnblogs.com/jzdwajue/p/6978411.html

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