症状：（

各位大师：
    小弟新手有理了！安装完tomcat和apache后，配合正常，可以访问jsp页面，但jsp页面右下脚显示如下。小弟以为是数据库及数据没安装，于是安装了oracle，添加进了数据，sqlplus可以正常访问数据，启动后回到首页，首页jsp页面还是提醒我这些？等于没安数据库。是不是tomcat和数据库配合还要改什么呀？小弟快疯了！求救呀！
Error: 500
Location: /index.jsp
Internal Servlet Error:

javax.servlet.ServletException: com/ionglobal/dtt/content/NewsManager
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:508)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
        at org.apache.tomcat.core.Handler.service(Handler.java:287)
        at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:806)
        at org.apache.tomcat.core.ContextManager.service(ContextManager.java:752)
        at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
        at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
        at java.lang.Thread.run(Thread.java:484)

Root cause:
java.lang.NoClassDefFoundError: com/ionglobal/dtt/content/NewsManager
        at _0002findex_0002ejspindex_jsp_1._jspService(_0002findex_0002ejspindex_jsp_1.java:101)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.jasper.servlet.JspServlet$JspCountedServlet.service(JspServlet.java:130)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:282)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:429)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:500)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
        at org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:405)
        at org.apache.tomcat.core.Handler.service(Handler.java:287)
        at org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
        at org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:806)
        at org.apache.tomcat.core.ContextManager.service(ContextManager.java:752)
        at org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
        at org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java:416)
        at org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java:501)
        at java.lang.Thread.run(Thread.java:484)