安装出错，请老大们帮忙看一下

lhc9732

我自己用Tomcat和apache整合。配置和jsp运行环境，我想安装一个Mysql+jsp的论坛试试，但安装的时候提示
Apache Tomcat/4.0.1 - HTTP Status 500 - Internal Server Error

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type Exception report

message Internal Server Error

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

exception

org.apache.jasper.JasperException: Unable to compile class for JSP

An error occurred at line: 2 in the jsp file: /jspbbs/Home/install.jsp

Generated servlet error:
/usr/local/jakarta-tomcat-4.0.1/work/fukuyama.com.cn/myjsp/jspbbs/Home/install$jsp.java:60: Class com.laoer.bbscs.db.Install not found.
                com.laoer.bbscs.db.Install InstallBean = null;
                                  ^


An error occurred at line: 2 in the jsp file: /jspbbs/Home/install.jsp

Generated servlet error:
/usr/local/jakarta-tomcat-4.0.1/work/fukuyama.com.cn/myjsp/jspbbs/Home/install$jsp.java:63: Class com.laoer.bbscs.db.Install not found.
                    InstallBean= (com.laoer.bbscs.db.Install)
                                                    ^


An error occurred at line: 2 in the jsp file: /jspbbs/Home/install.jsp

Generated servlet error:
/usr/local/jakarta-tomcat-4.0.1/work/fukuyama.com.cn/myjsp/jspbbs/Home/install$jsp.java:68: Class com.laoer.bbscs.db.Install not found.
                            InstallBean = (com.laoer.bbscs.db.Install) java.beans.Beans.instantiate(this.getClass().getClassLoader(), "com.laoer.bbscs.db.Install");
                                                             ^
3 errors

        at org.apache.jasper.compiler.Compiler.compile(Compiler.java:284)
        at org.apache.jasper.servlet.JspServlet.loadJSP(JspServlet.java:546)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.loadIfNecessary(JspServlet.java:177)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:189)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:382)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:474)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
        at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
        at org.apache.catalina.connector.warp.WarpRequestHandler.handle(WarpRequestHandler.java:215)
        at org.apache.catalina.connector.warp.WarpConnection.run(WarpConnection.java:194)
        at java.lang.Thread.run(Thread.java:484)



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请老大帮忙