严重: Servlet.service() for servlet action threw exception
16:17:59,390 WARN RequestProcessor:528 - Unhandled Exception thrown: class java.lang.NullPointerException
2012-5-19 16:17:59 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet action threw exception
java.lang.NullPointerException
at com.cps.hs.action.LoadAction.execute(LoadAction.java:48)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:619)



 ou NO Tell me why？

------解决方案--------------------
空指针还不好找吗？

com.cps.hs.action.LoadAction.execute(LoadAction.java:48)

48行看下。
------解决方案--------------------
48行代码放上来
------解决方案--------------------
userBiz对象空的嘛。

估计没注入进来吧。 看看配置文件。
------解决方案--------------------
userBiz 这个是啥？

代码能贴全乎点么？
我的异常网推荐解决方案：Servlet.service() for servlet default threw exception,http://www.aiyiweb.com/eclipse/181756.html