简单登录

kfkfzwd 2011-10-08

展开全文

http://apps.hi.baidu.com/share/detail/2454881 //selvert登录的作用

http://www.duote.com/tech/6/15288.html //页面登录例子

http://blog.csdn.net/mmllkkjj/article/details/6128355 登录过程流程图

http://blog.sina.com.cn/s/blog_4a9eb82901009qtt.html url-patten 用法

<%@ page contentType="text/html;charset=GB2312" %>

<html>
<head>
<title>CH5 - Login.jsp</title>
</head>
<body>

<h2>javax.servlet.http.HttpSession - session 对象</h2>
<form action=Login.jsp method="POST" >
Login Name: <input type="text" name="Name"><br>
Login Password: <input type="text" name="Password" ><br>
<input type="submit" value="Send"><br>
<form>

<% if (request.getParameter("Name") != null &&
request.getParameter("Password") != null) {
String Name = request.getParameter("Name");
String Password = request.getParameter("Password");

if (Name.equals("mike") && Password.equals("1234")) {
session.setAttribute("Login", "OK");
response.sendRedirect("Member.jsp");
}
else {
out.println("登录错误，请输入正确名称");
}
}
%>

</body>
</html>

JSP Member.jsp

<%@ page contentType="text/html;charset=GB2312" %>
            <html>
            <head>
            <title>CH5 - Member.jsp</title>
            </head>
            <body>
            <h2>javax.servlet.http.HttpSession - session 对象</h2>
            <%
            String Login = (String)session.getAttribute("Login");
            if (Login != null && Login.equals("OK")) {
            out.println("欢迎进入");
            session.invalidate();
            }
            else {
            out.println("请先登录，谢谢") ;
            out.println("<br>经过五秒之后，网页会自动返回Login.jsp");
            response.setHeader("Refresh","5;URL=Login.jsp");
            }
            %>
            </body>
            </html>