JSP内置对象---一个小项目（实现用户的登录（不使用数据库））-白红宇

JSP内置对象---一个小项目（实现用户的登录（不使用数据库））

阅读量：270 次

发布时间：2019-03-01

本文共 2155 字，大约阅读时间需要 7 分钟。

这里写图片描述

最终效果：

用户登录

登录成功

登录失败

下面只给出实现功能的JSP代码

Login.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%>        
           imooc - Login        
           
           
             
                                    
          
           
                
             
    
        
                
                 
                      用户名:                                  密码:

dologin.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%><%    String path = request.getContextPath();    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";    String username = "";    String password = "";    request.setCharacterEncoding("utf-8");    username = request.getParameter("username");    password = request.getParameter("password");    if("admin".equals(username)&&"admin".equals(password)){        request.getRequestDispatcher("login_success.jsp").forward(request, response);        session.setAttribute("username", username);    } else {        response.sendRedirect("login_failure.jsp");    }%>

login_success.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%>        
           imooc - Login        
           
           
             
                                    
          
           
                
             
    
        
    
             <%            String loginUser = "";            if(session.getAttribute("username") != null){                loginUser = session.getAttribute("username").toString();            }        %>            
     欢迎您                <%=loginUser%>                登录成功

login_failure.jsp

<%@ page language="java" contentType="text/html; charset=utf-8"    pageEncoding="utf-8"%>        
           imooc - Login        
           
           
             
                                    
          
           
                
             
    
        
    
                 登录失败，请检查用户名密码；
     
            
     返回登陆页面

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