<%@ 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+"/";
%>
 


 
  
  
  
  
    
    
      
    
    
    
 
 
 
 
  
系统登录
  

  

   

    

     
用户名：
     

    
    

     
密码：
     

    
    

     

     
    
   
  
 

<%@ 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+"/";
%>
 


 
  
  
  
  
    
    
      
    
    
    
 
 
 
 
  
  
setProperty动作元素
  

  
  <%--
   
  --%>
  
  <%--
   
  --%>
  
  <%--
  
  
  --%>
  
  
  
  
  <%--  
    用户名：<%=myUsers.getUsername() %>

    密码：<%=myUsers.getPassword() %>

  --%>
  
   用户名： 

   密码：

  

  

 
   测试javabean的四个作用域范围
 
   <%
     request.getRequestDispatcher("testScope.jsp").forward(request, response);
   %>
 
 

<%@ 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 + "/";
%>
 




 

 






 

 

    
Javabean的四个作用域范围
    

    
    用户名：
 密码：

    
    

    <%--
    用户名：<%=((Users)application.getAttribute("myUsers")).getUsername()%>

    密码：<%=((Users)application.getAttribute("myUsers")).getPassword() %>

  --%>
    <%--
    用户名：<%=((Users)session.getAttribute("myUsers")).getUsername()%>

    密码：<%=((Users)session.getAttribute("myUsers")).getPassword() %>

  --%>
    <%--
    用户名：<%=((Users)request.getAttribute("myUsers")).getUsername()%>

    密码：<%=((Users)request.getAttribute("myUsers")).getPassword() %>

  --%>
    <%
        String username = "";
        String password = "";
        if (pageContext.getAttribute("myUsers") != null) {
            username = ((Users) pageContext.getAttribute("myUsers"))
                    .getUsername();
            password = ((Users) pageContext.getAttribute("myUsers"))
                    .getPassword();
        }
    %>
 
    用户名：<%=username%>
 密码：<%=password%>