小弟刚学jsp望大虾们指点!代码如下:1. sb1.javapackage ch1;import java.io.*;public class sb1{public sb1(){}private String id;private String name;public void setId(String id){this.id=id;}public String getId(){return id;}public void setName(String name){this.name=name;}public String getName(){return name;}}2. html:<HTML><HEAD><TITLE> New Document </TITLE></HEAD><BODY><form name=t action=sb1.jsp method=post>id :<input type=text name=id><br>name:<input type=text name=name><br><input type=submit name=t1></form></BODY></HTML>3. sb1.jsp:<%@ page language="java" contentType="text/html;charset=gb2312"%><jsp:useBean id="testB" class="ch1.sb1"/><html><body><jsp:setProperty name="testB" property="*"/><center><jsp:getProperty name="testB" property="name"/><jsp:getProperty name="testB" property="id"/></center><body></html>编译出的sb1.class放在%Tomcat%webapps\jsp\WEB-INF\classes\ch1 目录下除了JAVABEAN的一般的JSP页面都可以运行顺便贴下classpath:C:\j2sdk1.4.1_07\lib\tools.jar;C:\j2sdk1.4.1_07\jre\lib\rt.jar;%CATALINA_HOME%\common\lib\servlet.jar;C:\Program Files\Microsoft SQL Server 2000 Driver for JDBC\lib\mssqlserver.jar;.;还有path:C:\Program Files\Microsoft Visual Studio\Common\Tools\WinNT;C:\Program Files\Microsoft Visual Studio\Common\MSDev98\Bin;C:\Program Files\Microsoft Visual Studio\Common\Tools;e:\VC98\bin;C:\WINDOWS\system32;%JAVA_HOME%\bin;C:\j2sdk1.4.1_07\bin;出错提示是:type Exception reportmessagedescription The server encountered an internal error () that prevented it from fulfilling this request.exceptionorg.apache.jasper.JasperException: /sb1.jsp(2,0) The value for the useBean class attribute ch1.sb1 is invalid.org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)javax.servlet.http.HttpServlet.service(HttpServlet.java:802)谢谢各位了!
參考答案:这是一个类型异常报告
The value for the useBean class attribute（属性） ch1.sb1 is invalid（无价值）
也就是说传值有问题
