标签：article set char button redirect new 用户 word 目录结构
记一下，免得以后忘记了，又要去查。
文件共有四个web.xml、login.jsp、logout.jsp、welcome.jsp四个文件
测试环境：Tomcat 6.0.x
假设项目名称是LoginSample，我的目录结构是这样的
...\webapps\LoginSample\WEB-INF\web.xml
...\webapps\LoginSample\login.jsp
...\webapps\LoginSample\logout.jsp
...\webapps\LoginSample\welcome.jsp
----------------------------------------------------------------------------------------------
web.xml源码清单
- <web-app xmlns="http://java.sun.com/xml/ns/j2ee"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
- version="2.4">
- <welcome-file-list>
- <welcome-file>welcome.jsp</welcome-file>
- </welcome-file-list>
- </web-app>
login.jsp源码清单
- <%@ page contentType="text/html;charset=UTF-8" %>
- <html>
- <head>
- <title>JSP简单登录实例</title>
- </head>
-
- <body>
- <h2>请登录</h2>
-
- <form 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("a") && Password.equals("a")) {
- session.setAttribute("Login", "OK");
- session.setAttribute("myCount", new Integer(1));
- response.sendRedirect("welcome.jsp");
- }
- else {
- %>
- 登录失败:用户名或密码不正确～
- <%
- }
- }
- %>
- </body>
- </html>
logout.jsp源码清单
- <%@ page contentType="text/html;charset=UTF-8" %>
- <html>
-
- <%
- session.setAttribute("Login", "");
- %>
-
- <body>
- <h2>你已经退出登录</h2>
- </body>
-
- </html>
welcome.jsp源码清单
- <%@ page contentType="text/html" pageEncoding="UTF-8" import="java.util.*"%>
-
- <html>
- <body>
- <h2>欢迎页面(测试session)</h2>
-
- <%
-
- String Login = (String)session.getAttribute("Login");
- int nCount=0;
-
-
- if (Login != null && Login.equals("OK")) {
- Integer myCount = (Integer)session.getAttribute("myCount");
- if(myCount!=null)
- {
- nCount = myCount.intValue();
- nCount = nCount + 1;
- session.setAttribute("myCount",new Integer(nCount));
- }
- %>
- 登录成功,myCount=<%=nCount%></br>
- <input type=button value="退出" onclick="javascript:location.href=‘logout.jsp‘">
- <%
- }
- else {
- %>
- <jsp:forward page="login.jsp"/>
- <%
- }
- %>
-
- </body>
- </html>
from: http://blog.csdn.net/lee353086/article/details/8080933
纯JSP简单登录实例
标签：article set char button redirect new 用户 word 目录结构
原文地址：http://www.cnblogs.com/ec04/p/7967461.html
