关于Servlet的小小问题.
登录页面 index.jsp 登录成功后显示 login.jsp,指向是没有问题,
但是登陆上去后会有1秒钟的时间显示login.jsp,之后系统就会认定连接失效,转向connectionFail.jsp
我没有看到任何判断连接断开的代码,都不知道系统怎么判断的.
各位帮帮忙看看.
Servlet 代码
程序代码：// 验证用户登录
public void checkManager(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
boolean flag = true;
session = request.getSession();
ManagerList manager = ManagerList.getInstance();
Vector vo = manager.getList();
EmployeeVO employeevo = dao.employeeCheck(request
.getParameter("account"));
if (!vo.isEmpty() && vo != null) {
Enumeration en = vo.elements();
while (en.hasMoreElements()) {
EmployeeVO em = (EmployeeVO) en.nextElement();
if (em.getEm_accouts().equals(request.getParameter("account"))) {
flag = false;
}
}
} else {
flag = true;
}
/*----------------------以上代码判断员工是否在线----------------------------------------*/
if(employeevo.getEm_accouts()==null){
request.setAttribute("error", "您输入的帐号和密码不存在!!!");
}else if (!employeevo.getEm_password().equals(request.getParameter("password"))){
request.setAttribute("error", "您输入的密码不正确");
}else if (!flag){
request.setAttribute("erorr", "该员工已经登录！！！");
}else{
int id = employeevo.getEm_id().intValue();
ManagerTrace managerTrace = new ManagerTrace();
managerTrace.setId(id);
manager.addManager(employeevo);
session.setAttribute("managerTrace", managerTrace);
session.setAttribute("id", String.valueOf(id));
request.setAttribute("employee", employeevo);
request.setAttribute("number", employeevo.getEm_number());
request.setAttribute("right",
this.dao.getRight(employeevo.getEm_number()));
request.setAttribute("manager", dao.managerSelect(employeevo.getEm_number()));
}
RequestDispatcher requestDispatcher=request.getRequestDispatcher("employee/emLand.jsp");
requestDispatcher.forward(request, response);
}emLand.jsp程序代码：<%@ page contentType="text/html; charset=gb2312" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link href="css/style.css" rel="stylesheet" type="text/css">
<title>员工登录处理</title>
</head>
<body>
<div align="center">
<p> </p>
<b> <%if(request.getAttribute("erorr")==null){%>
<%
session.setAttribute("employee",request.getAttribute("employee"));
session.setAttribute("right",request.getAttribute("right"));
session.setAttribute("number",request.getAttribute("number"));
session.setAttribute("manager",request.getAttribute("manager"));
//session.setMaxInactiveInterval(60);
%>
<meta http-equiv="refresh" content="0;URL=login.jsp">
<%}else{%>
<strong> <%=request.getAttribute("erorr")%></strong>
<meta http-equiv="refresh" content="3;URL=index.jsp">
<%}%>
</b>
</div>
</body>
</html>login.jsp程序代码：<table width="80%" height="100%" border="0" align="center" cellpadding="0" cellspacing="0" bordercolor="#FFFFFF" bordercolordark="#819BBC" bordercolorlight="#FFFFFF"">
<tr align="left" valign="top">
<td height="21" colspan="3"><jsp:include page="top.jsp"/></td>
</tr>
<tr>
<td height="80%" background="picture/back.jpg" scope="row"><div align="center" class="style1">公司简介
</div>
<table width="63%" height="202" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td height="147"> <%=vo.getIntro()%></td>
</tr>
<tr>
<td height="25"> 企业宗旨：<%=vo.getTenet()%></td>
</tr>
<tr>
<td height="30"> 企业文化： <%=vo.getCulture()%> </td>
</tr>
</table>
<table width="63%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td width="52%" height="30">公司电话：<%=vo.getTel()%></td>
<td width="48%" >公司传真：<%=vo.getFax()%></td>
</tr>
<tr>
<td height="30">公司地址：<%=vo.getAddress()%></td>
<td >联 系 人：<%=vo.getManager()%></td>
</tr>
</table>
<p> </p>
<p> </p></td>
</tr>
</table>connectFail.jsp程序代码：<%@ page contentType="text/html; charset=gb2312" %> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>判断用户是否为空</title> </head> <body> <div align="center"><strong>员工连接已经断开，请重新登录 ！！！ </strong></div> <meta http-equiv="refresh" content="3;URL=index.jsp"> </body> </html>
[ 本帖最后由 楚小饭 于 2010-12-15 10:17 编辑 ]
