帮我看下那里错了啊
刚开始的登录界面
<%@ page language="java" import="java.util.*" pageEncoding="gb2312"%><% session.invalidate();%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>zhong he guan li xi tong</title> <meta http-equiv="Content-type" content="text/html;charset=gb2312" /> <META content="MSHTML 6.00.2900.3314" name=GENERATOR> <link href="images/blue.css" rel="stylesheet" type="text/css"> <style type="text/css"><!--body { background-image: url(images/bg.gif); margin: 0px; background-repeat: repeat-x;}table,td { font-family: "宋体"; font-size: 12px;}.inputtext { border-left: 1px solid balck; border-right: 1px solid balck; border-top: 1px solid balck; border-bottom: 1px solid balck;}.loginbg { font-size: 12px; width: 59px; height: 26px; background-image: url(images/login_bg.gif); border: none; padding-top: 3px; color: white;}.font1 { FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "宋体"}.input { BORDER-RIGHT: #000000 1px solid; BORDER-TOP: #000000 1px solid; FONT-SIZE: 12px; BORDER-LEFT: #000000 1px solid; COLOR: #000000; BORDER-BOTTOM: #000000 1px solid; FONT-FAMILY: "宋体"; BACKGROUND-COLOR: #ffffff}--></STYLE> </head> <body bgcolor=#002779> <script language="javascript"> function form_check(){ if(document.form1.username.value==""){ window.alter("登录名不能为空"); document.form1.username.focus(); return (false); } if(document.form1.pwd.value=""){ window.alter("登录密码不能为空"); document.form1.pwd.focus(); return (false); } } function loginclick(){ if(form_check()){ this.form.submit(); } } </script> <table height=600 width="100%" cellSpacing=0 cellPadding=0 align=center border=0> <tbody> <tr> <td valign=center align=middle> <div align=center> <table cellSpacing=0 cellPadding=0 width=460 border=0> <tbody> <tr> <td> <img height=12 src="images/login_1.jpg" width=50> </td> </tr> </tbody> </table> <TABLE cellSpacing=0 cellPadding=0 width=460 border=0> <TBODY> <TR> <TD> <IMG height=109 src="images/login_2_.jpg" width=460> </TD> </TR> </TBODY> </TABLE> <TABLE cellSpacing=0 cellPadding=0 width=460 border=0> <TBODY> <TR> <TD bgColor=#eeeeee height=6></TD> </TR> </TBODY> </TABLE> <table cellSpacing=0 cellPadding=0 width=460 border=0> <tbody> <tr> <td height=150 align=center bgColor=#ffffff> <table width=260 border=0 cellspacing=0 cellPadding=0> <tr> <td height=30 align=center> <font color=#FF6600>系统登陆</font> </td> </tr> <tr> <td height="1" align="center"> <img src="images/bj-02.jpg" width="251" height="1"> </td> </tr> <form name="form1" action="login" method="post" onSubmit="return form_check();"> <input name="reaction" type="hidden" value="chklogin"> <tr> <td align="center" valign="top"> <table width="75%" align=center height="100%" border=0 cellSpacing=0 cellPadding=0> <tr> <td width="24%" height="30"> 用 户: </td> <td width="76%" height="30"> <input name="username" type="text" size="15" class="inputtext"> </td> </tr> <tr> <td height="25"> 密 码: </td> <td height="25"> <input type="password" name="pwd" size="15" class="inputtext"> </tr> <tr> <td height="45" colspan="2"> <p align=center> <input type="submit" value="登 陆" class="loginbg"> <input type="reset" value="取 消" class="loginbg"> </td> </tr> </form> </table> </td> </tr> </tbody> </table> <TABLE cellSpacing=0 cellPadding=0 width=460 bgColor=#ffffff border=0> <TBODY> <TR> <TD> <IMG height=10 src="images/login_3.gif" width=10> </TD> <TD align=right> <IMG height=10 src="images/login_4.gif" width=10> </TD> </TR> </TBODY> </TABLE> </div> </td> </tr> </tbody> </table> </body></html>
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>login</servlet-name> <servlet-class>org.gl.Login</servlet-class> </servlet> <servlet-mapping> <servlet-name>login</servlet-name> <url-pattern>/login</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>default.jsp</welcome-file> </welcome-file-list></web-app>
<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>login</servlet-name> <servlet-class>org.gl.Login</servlet-class> </servlet> <servlet-mapping> <servlet-name>login</servlet-name> <url-pattern>/login</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>default.jsp</welcome-file> </welcome-file-list></web-app>