请帮我分析一下这个错误信息
Error: 500 Location: /\CSTreeBean-0.3\example\TreeFrames.jspInternal Servlet Error:org.apache.jasper.JasperException: Unable to compile class for JSPD:\QB_webroot\work\localhost_8080\_0002f_0002fCSTreeBean_0002d_00030_0002e_00033_0002fexample_0002fTreeFrames_0002ejspTreeFrames_jsp_0.java:1: Identifier expected.
package .CSTreeBean_0002d_00030_0005f_00033.example;
^
D:\QB_webroot\work\localhost_8080\_0002f_0002fCSTreeBean_0002d_00030_0002e_00033_0002fexample_0002fTreeFrames_0002ejspTreeFrames_jsp_0.java:17: Superclass HttpJspBase of class _0002f_0002fCSTreeBean_0002d_00030_0002e_00033_0002fexample_0002fTreeFrames_0002ejspTreeFrames_jsp_0 not found.
public class _0002f_0002fCSTreeBean_0002d_00030_0002e_00033_0002fexample_0002fTreeFrames_0002ejspTreeFrames_jsp_0 extends HttpJspBase {
^
2 errors
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:254)
at org.apache.jasper.servlet.JspServlet.doLoadJSP(JspServlet.java:462)
at org.apache.jasper.servlet.JasperLoader12.loadJSP(JasperLoader12.java:146)
at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:433)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:152)
at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:164)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(HttpConnectionHandler.java:210)
at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:498)
at java.lang.Thread.run(Thread.java:484)
这是什么错误????
盼高手解答。