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jsp网页打不开，出现的错误，不知道如何解决，帮帮忙啊！各位大侠帮帮忙啊！快跌啊！急用啊！多谢各位大侠了！我刚入道，大家多指点指点啊！
出现错误如下：
type Exception report

message

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

exception

org.apache.jasper.JasperException
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:346)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:810)


root cause

java.lang.NullPointerException
    org.apache.jsp.sys.rightview4_jsp._jspService(rightview4_jsp.java:219)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:298)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:810)


note The full stack trace of the root cause is available in the Apache Tomcat/5.0.25 logs.


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