大侠们..帮看看哪里出错勒...感激不尽
严重: Servlet.service() for servlet ActionServlet threw exceptionjava.lang.NullPointerException
at actions.regedit.ActionRegedit.Md5(ActionRegedit.java:54)
at actions.regedit.ActionRegedit.execute(ActionRegedit.java:30)
at mystruts.ActionServlet.doGet(ActionServlet.java:62)
at mystruts.ActionServlet.doPost(ActionServlet.java:80)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at filter.utf_8.CodeFilter.doFilter(CodeFilter.java:22)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
--------------------编程问答-------------------- java.lang.NullPointerException
at actions.regedit.ActionRegedit.Md5(ActionRegedit.java:54)
at actions.regedit.ActionRegedit.execute(ActionRegedit.java:30)
断点看看这两行，看看哪个地方对象为空。 --------------------编程问答-------------------- 具体代码贴出来 --------------------编程问答-------------------- ActionRegedit.java:54
这个类第54行有个对象值为null
你好好检查一下就行了 --------------------编程问答-------------------- --------------------编程问答-------------------- 可能是JSP页面传值的时候传到action中哪项为空了！ --------------------编程问答-------------------- at actions.regedit.ActionRegedit.execute(ActionRegedit.java:30)
到这里30行去看看是不是获取的为空了！ --------------------编程问答-------------------- 空指针异常 --------------------编程问答-------------------- 标准的空指针异常嘛。。。
--------------------编程问答--------------------
空指针不好给你看 不过 你输出一下 就知道哪里为空了！md5?是加密吗？
补充：Java , Eclipse
