1、 eclipse菜单 File->New->Others.. 选择 Java->Tomcat Project 输入项目名称
webapp。
2、用jsp model1实现用户登录
（1）、eclipse菜单 File->New->Folder 文件夹名称 model1
（2）、新建jsp文件
webapp\model1\ login.jsp
webapp\model1\ succeed.jsp
(3)、login.jsp
******************************************************************************
<%@ page language="java" pageEncoding="GB2312" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>login</title>
</head>
<%
boolean isSucceed=false;
String msg="";
String username=request.getParameter("username");
String password=request.getParameter("password");
if(username!=null){
System.out.println("登陆处理开始.........");
username=username.trim();
password=password.trim();
if(username.equals("")&&username.equals("")){
isSucceed=false;
msg="用户名或密码为空";
}else{
isSucceed=true;
}
if(isSucceed){
if(username.equals("zkjbeyond")&&password.equals("zkjbeyond")){
isSucceed=true;
session.setAttribute("username",username);
msg="登陆成功";
response.sendRedirect("succeed.jsp");
}else{
isSucceed=false;
msg="用户名密码不正确";
}
}
}
System.out.println(msg);
System.out.println("登陆处理结束.........");
%>
<body bgcolor="#FFFFFF">
<form action="login.jsp" method="post">
<div>
<span style="width:70;">用户名：</span>
<span><input type="text" name="username"></span>
</div>
<div>
<span style="width:70;">密 码：</span>
<span><input type="password" name="password"></span>
</div>
<div>
<span style="width:70;"></span>
<span><input type="submit"></span>
</div>
<div style="color:red;">
<%
if(!isSucceed)
out.println(msg);
%>
</div>
</form>
</body>
</html>
**************************************************************************************
succeed.jsp
<%@ page language="java" pageEncoding="GB2312" %>
<!DOCTYPE HTML PUBLIC "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
<title>succeed</title>
</head>
<body bgcolor="#FFFFFF">
<%
Object username=session.getAttribute("username");
if(username!=null)
out.println("用户名为："+username);
else
response.sendRedirect("login.jsp");
%>
</body>
</html> 
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