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JSP.数据库系统开发完全手册-图书超市管理系统出现问题
发表在JavaWeb图书答疑
2008-05-21
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<H1>HTTP Status 500 - </H1>
<HR noShade SIZE=1>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>type</FONT></B> Exception report</P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>message</FONT></B> <U></U></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>description</FONT></B> <U>The server encountered an internal error () that prevented it from fulfilling this request.</U></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>exception</FONT></B> <PRE>org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
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:802)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
org.apache.jsp.index_jsp._jspService(index_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
</PRE>
<P></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>root cause</FONT></B> <PRE>java.lang.NullPointerException
org.apache.jsp.left_jsp._jspService(left_jsp.java:182)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
org.apache.jsp.index_jsp._jspService(index_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
</PRE>
<P></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>note</FONT></B> <U>The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.</U></P>
<HR noShade SIZE=1>
<H3>Apache Tomcat/5.0.28</H3>
<P> </P>
<P> </P>
<P> </P>
<P>高手帮忙，谢谢</P>
<HR noShade SIZE=1>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>type</FONT></B> Exception report</P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>message</FONT></B> <U></U></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>description</FONT></B> <U>The server encountered an internal error () that prevented it from fulfilling this request.</U></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>exception</FONT></B> <PRE>org.apache.jasper.JasperException
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:372)
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:802)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
org.apache.jsp.index_jsp._jspService(index_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
</PRE>
<P></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>root cause</FONT></B> <PRE>java.lang.NullPointerException
org.apache.jsp.left_jsp._jspService(left_jsp.java:182)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
org.apache.jsp.index_jsp._jspService(index_jsp.java:91)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
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:802)
</PRE>
<P></P>
<P><B><FONT style="BACKGROUND-COLOR: #525d76" color=#ffffff>note</FONT></B> <U>The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.</U></P>
<HR noShade SIZE=1>
<H3>Apache Tomcat/5.0.28</H3>
<P> </P>
<P> </P>
<P> </P>
<P>高手帮忙，谢谢</P>
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