我试着用全局变量:
package loginUsing;
import java.io.*;
public class Loginer
{
public Loginer()
{
this.logined=false;
}
private boolean logined;
public void setLogined(boolean flag)
{
this.logined=flag;
}
}
类放在D:\tomcat\common\classes\loginUsing 下;
login.jsp 这样写的:
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
[color=008080][color=0000FF][color=FF0000]<%@page import="loginUsing.Loginer" %>[/color][/color][/color]
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>登录页面</title>
</head>
[color=00FF00][color=00FFFF][color=FF00FF][color=C0C0C0][color=FF0000]<jsp:useBean id="test" class="Loginer" scope="session">
</jsp:useBean<% boolean loginedFlag=false;//全局变量
%>
<% test.setLogined(loginedFlag);%>
>[/color][/color][/color][/color][/color]
<% //<META HTTP-EQUIV="refresh" CONTENT="60">//页面刷新，备份在这里
String goodUser = "admin";
String goodPass = "admin";
HttpSession mySession = request.getSession(true);
String errorMessage = "请先登录";
boolean loginAttempt = false;
String myMethod = request.getMethod();
mySession.putValue("requestedUrl", "http://localhost:8080/app/index.jsp");
//out.println((String)mySession.getValue("requestedUrl"));//调试
if(request.getParameterValues("click") != null //&& request.getParameterValues("click")[0].trim().equals("确认")
)
{ loginAttempt = true;
//out.println(loginAttempt);//调试
}
if (loginAttempt)
{
String username = request.getParameterValues("user")[0].trim();
String password = request.getParameterValues("pass")[0].trim();
//out.println("username = /" + username + "/ & password = /" + password + "/<BR>");//调试
if (goodUser.equals(username) && goodPass.equals(password))
{
response.sendRedirect((String)mySession.getValue("requestedUrl"));
mySession.putValue("hasPermission", new Boolean(true));
loginedFlag=true;
[color=FF0000] test.setLogined(loginedFlag);[/color]
errorMessage = "Unable to redirect: "
+ (String)mySession.getValue("requestedUrl");
}
else
{
errorMessage = "请输入正确的用户名和口令";
}
}
else
{
errorMessage = "请先登录";
if (mySession.getValue("requestedUrl") == null)
{
mySession.putValue("requestedUrl", "http://localhost:8080/app/login.jsp");
}
//out.println("set userReferrer to " + mySession.getValue("redirectTo") + "<BR>");
}
%>
<CENTER>
<font color=red><%=errorMessage%></font>
<TABLE align=center>
<FORM action="login.jsp" method=post name="login">
<TR><TD>用户:</TD><TD colspan="2"><input type=text name=user value=""></TD></TR>
<TR><TD>密码:</TD><TD colspan="2"><input type=password name=pass value=""></TD></TR>
<TR>
<td></td>
<TD><input type=submit name=click value="确认"></TD>
<TD> <input name="" type="reset" value="重置" ></TD>
</TR>
</FORM>
</TABLE>
</CENTER>
<script language="Javascript">
// <!--
if (document.forms.login != null)
document.forms.login.user.focus();
// -->
</script>
//////////////////////////////////////////////////////////////////
您所在位置：
xilong
[专家分：30] 发布于 2007-04-21 01:29:00 