各位高手，给我看看下面报什么错误啊，急！！！

org.apache.jasper.JasperException: /ch13/reg.jsp(5,0) The value for the useBean class attribute org.sunxin.lesson.jsp.ch13.UserBean 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)
org.apache.jasper.compiler.Generator.generate(Generator.java:3272)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:244)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.

解决方案 »

  1.   

    代码如下
    package org.sunxin.lesson.jsp.ch13;
    import java.io.Serializable;public class UserBean implements Serializable{
    //定义几个属性
    private String name;
    private int sex;
    private String education;
    private String email;
    //给上面的属性提供get、set方法
    public String getName(){
    return name;
    }
    public void setName(String name){
    this.name = name;
    }
    public int getSex(){
    return sex;
    }
    public void setSex(int sex){
    this.sex = sex;
    }
    public String getEducation(){
    return education;
    }
    public void setEducation(String education){
    this.education = education;
    }
    public String getEmail(){
    return email;
    }
    public void setEmail(String email){
    this.email = email;
    }
    }
      

  2.   

    <html>
    <head><title>用户信息填写</title></head>
    <body>
    <form action="reg.jsp" method="post">
    <table>
    <tr>
    <td>用户名：</td>
    <td><input type="text" name="name"></td>
    </tr>
    <tr>
    <td>性别：</td>
    <td>
    <input type="radio" name="sex" value="1" checked>男
    <input type="radio" name="sex" value="0">女
    </td>
    </tr>
    <tr>
    <td>学历：</td>
    <td>
    <select size=1 name="education">
    <option value="" selected>...</option>
    <option vlaue="高中">高中</option>
    <option vlaue="大学">大学</option>
    <option vlaue="硕士">硕士</option>
    <option vlaue="博士">博士</option>
    </select>
    </td>
    </tr>
    <tr>
    <td>Email：</td>
    <td><input type="text" name="email"></td>
    </tr>
    <tr>
    <td><input type="submit" value="提交"></td>
    <td><input type="reset" value="重置"></td>
    </tr>
    </table>
    </form>
    </body>
    </html>
      

  3.   

    <%@ page contentType="text/html;charset=gb2312"%>
    <%
    request.setCharacterEncoding("gb2312");
    %>
    <jsp:useBean id="user" scope="session" class="org.sunxin.lesson.jsp.ch13.UserBean">
    <jsp:setProperty name="user" property="*"/>
    </jsp:useBean>注册成功！！！！