天一中学张家玮女朋友:一个jsp出错问题,高手帮帮忙,小妹我感激不尽!!!

来源：百度文库编辑：高校问答时间：2024/05/05 00:49:56

程序操作环境WinXP,J2SDK+Tomcat+eclipse.我写了一个注册程序

注册确认:register_confirm.jsp
______
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>

<%@ page language="java" import="java.sql.*"%>
<jsp:useBean id="firmbean" scope="page" class="firm.Firm"/>
<html >
<head>

<title>注册确认</title>
</head>

<body bgcolor="#CCCCCC">

<% String namel= new String(request.getParameter("user_id").getBytes("8859
_1"));
String password = new String(request.getParameter("password").getBytes("8859_1"));
String email = new String(request.getParameter("emial").getBytes("8859_1"));
String url = new String(request.getParameter("url").getBytes("8859_1"));
String oicq = new String(request.getParameter("OICQ").getBytes("8859_1"));
String sql = "select * from user where name'" + namel + "'";
ResultSet rs = firmbean.executeQuery(sql);
if (rs.next()) {rs.close();
out.println("该会员已存在，请重新输入！");//session.putalue("register_message","该会员已存在，请重新输入！")；
%>
<jsp:forward page="register.jsp" />
<% }
else
{rs.close();
} %>
<form method="post" action="ok_register.jsp" >
<input type="hidden" name="user_id" value="<%= namel %>" />
<input type="hidden" name="password" value="<%= password %>" />
<input type="hidden" name="email" value="<%= email %>" />
<input type="hidden" name="url" value="<%= url %>" />
<input type="hidden" name="oicq" value="<%= oicq %>" />
</form>
</body>
</html>
__________________________________
注册成功ok_register.jsp
----------------------------------
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>

<%@ page language="java" import="java.sql.*" %>
<jsp:useBean id="firmbean" scope="page" class="firm.Firm"/>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>注册成功</title>
</head>

<body bgcolor="#999999">
<% String namel= new String(request.getParameter("user_id").getBytes("8859_1"));
String password= new String(request.getParameter("password").getBytes("8859_1"));
String email= new String(request.getParameter("email").getBytes("8859_1"));
String url= new String(request.getParameter("url").getBytes("8859_1"));
String oicq= new String(request.getParameter("oicq").getBytes("8859_1"));
String strSQL="insert into user (name,password,email,www,oicq) values('" + namel + "','" + pwdl +"','" + emial + "','" + url + "','" + oicq + "')";
firmbean.executeUpdate(strSQL);
//session.putValue("username",namel);
out.print("注册成功!"）；
%>
</body>
</html>
出错:
org.apache.jasper.JasperException: /jsp-test/register_confirm.jsp(4,0) The value for the useBean class attribute firm.Firm is invalid.
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:39)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:409)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:150)
org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1227)
org.apache.jasper.compiler.Node$UseBean.accept(Node.java:1116)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.30 logs.

首先确认你的类文件编译成功然后再测试jsp

你的Firm类可能有问题或是没有正确编译

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