jsp的问题.希望进来看下啊~~谢谢了啊~~小弟感激不不尽了啊~~~

我现在是用的是单独的TOMCAT服务器，没有配合APACHE，这是一个简单的用户登陆程序,下面的是用户登陆页面,就在进行验证的时候你发生了错误,
<html>
<head>
<title>用户注册</title>
<meta http-equiv="Content-type" content="text/html";charset="unicode">
<style type="text/css">
BODY{font-family:宋体;font-size:9pt}
      th{font-size:9pt}
        td{font-size:9pt}
</style>
</head>
<body>
<form METHOD=POST action="log_cm.jsp">
<table border="0" cellspacing="0" width=332 bgcolor="#f0f8ff" bordercolorlight="#4da6ff" bordercolordark="ecf5f">
<tr>
     <td colspan=2 align='center'><h4>请您注册</h4></td>
</tr>
<tr> 
<td align='left'>注册名:</td>
<td><input type="text" name="username"></td>
</tr>
<tr>
<td align="left">口&nbsp;&nbsp令:</td>
<td><input type="password" name="password"></td>
</tr>
<tr>
<td align='left'>EMAIL:</td>
<td><input type="text" name="email"></td>  
</tr>
<tr>
<td colspan=2 align="center">
<input type="submit" size="4" value="resiger">&nbsp;&nbsp;
<input type="reset" size="4" value="重来">
</td>
</tr>
</table>
</form><br/>
</center>
</body>
</html>     
这是登陆界面 在进行跳转的时候，出现错误：错误如下：   
Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception 
运行http://localhost:8080能显示页面，配置没的问题 
这个是验证页面log_cm.jsp，引用JAVA的类。logbean.class：
<html>
<head>
<title>用户验证</title>
</head>
<body>
<%@ page language="java" import javax.servlet.*,javax.servlet.http.*%>
<jsp:usebean id="handle" class="login.logbean" scope="request"/>
<jsp:setproperty name="handle" property="*"/>这下面是JAVA的源代码,在我的机子上已成编译成了。CLASS
package login;
import java.util.*;
public class logbean
{
private String username;
private String password;
private String email;
private Hashtable errors;
public logbean()
{
username="";
password="";
email="";
errors=new Hashtable();}
public String getusername(){
return username;
}
public String getpassword(){
return password;
}
public String getemail(){
return email;
}
public void setusername(String usernamestr)
{
username=usernamestr;
}
public void setpassword(String passwordstr)
{
password=passwordstr;
}
public void setemail(String emailstr)
{
email=emailstr;
}
public void seterrors(String Key,String msg)
{
errors.put(Key,msg);
}
public boolean validate()
{
boolean allok=true;
if(username.equals(""))
{
errors.put("username","please enter name");
username="";
allok=false;
}
if(password.equals("")||(password.length()>10||password.length()<6))
{
errors.put("password","please enter password");
password="";
allok=false;
}
if(email.equals("")||(email.indexOf('@')==-1)||(email.indexOf(".")==-1))
{
errors.put("email","please enter email");
email="";
allok=false;
}
return allok;
}
public String geterrormsg(String s)
{
String errormsg=(String)errors.get(s.trim());
return (errormsg==null)?"":errormsg;
}
}
</jsp:usebean>
<%
if(handle.validate()){
%>
<jsp:forward page="success.jsp"/>
<%
}else
{
%>
<jsp:forward page="relog.jsp"/>
<%
}
}
%>
</body>
</html>下面的登陆成 功页面
<jsp:usebean id="handle" class="login.logbean" scope="request"/>
<html>
<head>
<title>成功注册</title>
<meta http-epuiv="Content-type" content="text/html";charset="gb2312">
<style type="text/css">
BODY{font-family:宋体;font-size:9pt}
th{font-size:9pt}
td{font-size:9pt}
</style>
</head>
<body>
<table border="0" cellspacing="0" width="332" bgcolor="#f0f8ff" bordercolorlight="#4da6ff" borderdark="#ec5ff">
<tr>
<td colspan=2 align="center">祝你注册成功</td>
</tr><tr>
<td align="left">注册名:</td>
<td><jsp:getproperty name="handle" property="username"/></td>
</tr><tr>
<td align="left">口&nbsp;&nbsp;令:</td>
<td><jsp:getproperty name="handle" property="password"/></td>
</tr><tr>
<td align="left">Email:</td>
<td><jsp:getproperty name="handle" property="email"/></td>
</tr></table>
</form>
<br>
</center>
<jsp:usebean name="logbean" scope="page" class="login.logbean"/>
<body>
</html>下面是错误页面，并进行重新登陆：
<jsp:usebean id="handle" class="login.logbean" scope="request"/>
<html>
<head>
<title>更正注册</title>
<meta http-epuiv="Content-type" content="text/html";charset="gb2312">
<style type="text/css">
BODY{font-family:宋体;font-size:9pt}
th{font-size:9pt}
td{font-size:9pt}
</style>
</head>
<body>
<form METHOD=POST action="log_cm.jsp">
<table border="0" cellspacing="0" width="332" bgcolor="#f0f8ff" bordercolorlight="#4da6ff" borderdark="#ec5ff"><tr>
<td align="center" colspan=2><h4>请您更正注册:</h4></td>
</tr><tr>
<td align="left">注册名:</td>
<td input type="text" name="username" value="<jsp:getproperty name="handle" property="username"/>">
<span class="error"><%=handle.geterrormsg("username")%></span>
</td>
</tr><tr>
<td align="left">口&nbsp;&nbsp;令</td>
<td input type="password" name="password" value="<jsp:getproperty name="handle" property="password"/>">
<span class="error"><%=handle.geterrormsg("password")%></span>
</td>
</tr>
<tr>
<td align="left">Email:</td>
<td input type="text" name="email" value="<jsp:getproperty name="handle" property="email"/>">
<span class="error"><%=handle.geterrormsg("email")%></span>
</td>
</tr>
<tr>
<td align="center" colspan=2>
<input type="submit" size="4" value="注册">&nbsp;&nbsp;
<input type="reset" size="4" value="重来">
</td>
</tr>
</table>
</form>
</center>
<jsp:usebean id="logbean" scope="page" class="login.logbean">
</body>
</html>
希望能帮我解决下~~~~~
小弟感激不不尽了啊~~~