📄 checklogin.jsp

📁 《Web程序测试实训教程（Java版）》-徐民鹰-源代码

💻 JSP

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<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<jsp:useBean id="user" class="user.UserDB"  scope="page"/>
<% request.setCharacterEncoding("gb2312"); %>
<html>
    <head>
        <title>Verify Username and Password</title>
    </head>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <body bgcolor="#ffffee">
        <h4><center>Verifying Username and Password</center></h4>
        <table align="center" cellpadding="2" cellspacing="2" border="1" width="80%" bgcolor="#dddddd">
            <tr>
                <td>Username:</td>
                <td><%= request.getParameter ("username") %></td>
            </tr>
            <tr>
                <td>Password:</td>
                <td><%= request.getParameter ("password") %></td>
            </tr>
        </table>
         <%
           String username =request.getParameter("username");
	       String passwd =request.getParameter("password");
	       if(!user.userExist(username)){%>
		         <jsp:forward page="../include/err.jsp?err=此用户名不存在!"/>
         <%	}
           else{
	             if (!user.isValidUser(username,passwd)){
         %>
		             <jsp:forward page="../include/err.jsp?err=请输入用户名和密码!"/>
             <%	 }else{
		             session.setAttribute("userId",username);
		             response.sendRedirect("../index.jsp");
              %>
		            
         <%		}
	       }
         %>
        <hr>
        
    </body>
</html>

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