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达人请帮忙——配置问题请教

类型：转载责任编辑：asp 日期：2007/03/01

我把source.jsp文件放在jsp夹下，出现如下错误：

请问使哪里不对？谢谢，先！

error: 500
location: /examples/jsp/source.jsp
internal servlet error:

javax.servlet.servletexception
at org.apache.jasper.runtime.pagecontextimpl.handlepageexception(pagecontextimpl.java:459)
at jsp._0002fjsp_0002fsource_0002ejspsource_jsp_0._jspservice(_0002fjsp_0002fsource_0002ejspsource_jsp_0.java:86)
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:812)
at org.apache.tomcat.core.contextmanager.service(contextmanager.java:758)
at org.apache.tomcat.service.http.httpconnectionhandler.processconnection(httpconnectionhandler.java:213)
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.nullpointerexception
at examples.showsource.doendtag(showsource.java:23)
at jsp._0002fjsp_0002fsource_0002ejspsource_jsp_0._jspservice(_0002fjsp_0002fsource_0002ejspsource_jsp_0.java:76)
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:812)
at org.apache.tomcat.core.contextmanager.service(contextmanager.java:758)
at org.apache.tomcat.service.http.httpconnectionhandler.processconnection(httpconnectionhandler.java:213)
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)

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网友回答:

网友：ejbcreate

java.lang.nullpointerexception
at examples.showsource.doendtag(showsource.java:23)

空指针异常，可能是传了空值入你的程序。
比如说你没有new一个对象就直接调用了它的方法。

网友：extrwilling

你用的是tomcat 吗??

如果是的话,*.jsp文件应该放在你的应用程序目录下

例如你的应用程序文件为sinolge.防在这里面.

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