各位大侠请指教，应用javabean时错误？

wildcorn 2006-05-24 01:24:22

我的login.jsp代码为：
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<%@ page session="true" %>
<jsp:useBean id="login" scope="page" class="bookshop.run.login" />
<%
String mesg = "";

if( request.getParameter("username")!=null && !request.getParameter("username").equals("")){
String username =request.getParameter("username");
String passwd = request.getParameter("passwd");
username = new String(username.getBytes("ISO8859-1"));
passwd = new String(passwd.getBytes("ISO8859-1"));
login.setUsername(username);
login.setPasswd(passwd);
out.print(username+passwd);
if (login.excute()){
session.setAttribute("username",username);
String userid = Long.toString(login.getUserid());
session.setAttribute("userid",userid);
response.sendRedirect("booklist.jsp");
%>
<%
}else {
mesg = "登录出错！" ;
}
}
%>
<%@include file="/bookshop/inc/head.inc"%>

<script language="javascript">

function checkform() {
if (document.form1.username.value=="" ¦ ¦ document.form1.passwd.value==""){
alert("用户名或密码为空！");
return false;
}
return true;

}

</script>
<div align=center>用户登录 </div>
<br>
<% if (!mesg.equals("")){
out.println("<p>" + mesg + "</p>");}%>

<form name="form1" method="post" action="login.jsp">
<table width="400" border="0" cellspacing="1" cellpadding="1" align="center">
<tr>
<td width="147" align="right">用户名：<br>
</td>
<td width="246" valign="top">
<input type="text" name="username" size="16" maxlength="25">
</td>
</tr>
<tr>
<td width="147" align="right">密码：</td>
<td width="246" valign="top">
<input type="password" name="passwd" maxlength="20" size="16">
</td>
</tr>
<tr>
<td width="147" align="right"> </td>
<td width="246" valign="top">
<input type="submit" name="Submit" value="登录" onclick="javascript:return(checkform());">
<input type="reset" name="Submit2" value="取消">
</td>
</tr>
<tr>
<td colspan="2" align="center">
<p> </p>
测试用户：wxy 密码：wxy
</td>
</tr>
<tr>

<td colspan="2" align="center">
<p> </p>
<p>如果你还不是本站用户，请在此<a href="reg.jsp">注册</a></p>
</td>
</tr>
</table>
</form>
<%@include file="/bookshop/inc/tail.inc"%>

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login的bean代码为：
package bookshop.run;
/**
* <p>管理用户登录的类 </p>
*/
import bookshop.util.*;
public class login extends DataBase {
private String username; //登录用户名
private String passwd; //登录密码
private boolean isadmin; //是否管理员登录
private long userid=0; //用户ID号
public login() throws Exception{
super();
username = "";
passwd = "";
isadmin = false;
}
public String getUsername() {
return username;
}
public void setUsername(String newusername) {
username = newusername;
}
public String getPasswd() {
return passwd;
}
public void setPasswd(String newpasswd) {
passwd = newpasswd;
}
public boolean getIsadmin() {
return isadmin;
}
public void setIsadmin(boolean newIsadmin) {
isadmin = newIsadmin;
}
public long getUserid() {
return userid;
}
public void setUserid (long uid) {
userid = uid;
}
/**
* 获得查询用户信息的sql语句
* @return
*/
public String getSql() {
if (isadmin) {
sqlStr = "select * from BookAdmin where adminuser = '" +
dataFormat.toSql(username) + "' and adminpass = '" +
dataFormat.toSql(passwd) + "'";
}else {
sqlStr = "select * from shop_user where username = '" +
username + "' and password = '" + passwd + "'";
}
return sqlStr;
}
/**
* 执行查询
* @return
* @throws java.lang.Exception
*/
public boolean excute() throws Exception {
boolean flag = false;
DataBase db = new DataBase();
db.connect();
stmt = db.conn.createStatement ();
rs = stmt.executeQuery(getSql());
if (rs.next()){
if (!isadmin)
{
userid = rs.getLong("id");
}
flag = true;
}
rs.close();
return flag;
}
};

--------------------------------------------------------------------------------
奇怪产生一下错误:
HTTP Status 500 -
org.apache.jasper.JasperException: /bookshop/login.jsp(3,0) The value for the useBean class attribute bookshop.run.login is invalid.
大概意思是说我的login.class的bean非法找不到路径之类吧
但我已经将login.class放在了ROOT\WEB-INF\bookshop\run目录下了，请问这怎么解决？是不是放错目录了？

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