Cannot find any information on property 'name' in a bean of type 'user.file.test

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="user.file.test" %>
<HTML><BODY ><Font size=2>
<jsp:useBean id="test" class="user.file.test" scope="session"/>
<jsp:setProperty  name= "test"  property="name" param="name"/>
<jsp:setProperty  name= "test"  property="number" param="number"/>
<jsp:setProperty  name= "test"  property="classes" param="classes"/>
<jsp:setProperty  name= "test"  property="filename" param="filename"/>
  <Form action="" method="post" name=form1>
   输入姓名:<Input type=text name="name" size=10>
   输入学号:<Input type=text name="number" size=10>
   输入班级:<Input type=text name="classes" size=10>
   请选择试题：<Select name="filename"  value="A.txt">
                 <Option value="A.txt"> A.txt
                 <Option value="B.txt"> B.txt
                 <Option value="C.txt"> C.txt
               </Select>
  <Input type="submit" name="sub" value="确定">
  </FORM>
  <jsp:setProperty name ="text" property="filename" param="filename"/>
  您选择的试题是：<jsp:getProperty name="test" property="filename"/>
  <br><Font size=3 color=blue>
      <jsp:getProperty name="test" property="testContent"/>
      </font>
  <BR><FORM action="" method="post">
  请选择：
  <Input type="radio" name="selection" value="A">A
  <Input type="radio" name="selection" value="B">B
  <Input type="radio" name="selection" value="C">C
  <Input type="radio" name="selection" value="D">D
  <Input type="submit" name="tijiao" value="提交答案">
</FORM>
    <jsp:setProperty name="test" property="selection"/>
    您现在累计得分：<jsp:getProperty name="test" property="score"/>
</BODY></HTML> --------------------编程问答-------------------- type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: Cannot find any information on property 'name' in a bean of type 'user.file.test'
org.apache.jasper.runtime.JspRuntimeLibrary.internalIntrospecthelper(JspRuntimeLibrary.java:365)
org.apache.jasper.runtime.JspRuntimeLibrary.introspecthelper(JspRuntimeLibrary.java:308)
org.apache.jsp.test_jsp._jspService(test_jsp.java:67)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
出现这个问题，哪里错了！？？

补充：Java ,  Web 开发