看这段程序，问题出再那里？？

Question

if ((filename!=null)&&(filename.equals("")==false))改为
if ((filename!=null)&&(!filename.equals(""))

Answer 1

错误信息就是这样的，我用的是websphereC:\WebSphere\AppServer\temp\default_host\neibuwangAppWebApp\bumen\_insertdb_jsp_126.java uses or overrides a deprecated API.  Recompile with "-deprecation" for details.

Answer 2

还有[02.08.19 17:29:03:312 GMT+08:00] f38a94e4 WebGroup      X Root Cause
                                 java.lang.NullPointerException
at bumen._insertdb_jsp_126._jspService(_insertdb_jsp_126.java(Compiled Code))
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:127)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.runtime.JspServlet$JspServletWrapper.service(JspServlet.java:390)
at org.apache.jasper.runtime.JspServlet.serviceJspFile(JspServlet.java:712)
at org.apache.jasper.runtime.JspServlet.service(JspServlet.java:879)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.ibm.servlet.engine.webapp.StrictServletInstance.doService(ServletManager.java:644)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet._service(StrictLifecycleServlet.java:160)
at com.ibm.servlet.engine.webapp.IdleServletState.service(StrictLifecycleServlet.java:287)
at com.ibm.servlet.engine.webapp.StrictLifecycleServlet.service(StrictLifecycleServlet.java:105)
at com.ibm.servlet.engine.webapp.ServletInstance.service(ServletManager.java:371)
at com.ibm.servlet.engine.webapp.ValidServletReferenceState.dispatch(ServletManager.java:793)
at com.ibm.servlet.engine.webapp.ServletInstanceReference.dispatch(ServletManager.java:719)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.handleWebAppDispatch(WebAppRequestDispatcher.java:666)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:257)
at com.ibm.servlet.engine.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:154)
at com.ibm.servlet.engine.srt.WebAppInvoker.doForward(WebAppInvoker.java:105)
at com.ibm.servlet.engine.srt.WebAppInvoker.handleInvocationHook(WebAppInvoker.java:214)
at com.ibm.servlet.engine.invocation.CachedInvocation.handleInvocation(CachedInvocation.java:67)
at com.ibm.servlet.engine.invocation.CacheableInvocationContext.invoke(CacheableInvocationContext.java:106)
at com.ibm.servlet.engine.srp.ServletRequestProcessor.dispatchByURI(ServletRequestProcessor.java:160)
at com.ibm.servlet.engine.oselistener.OSEListenerDispatcher.service(OSEListener.java:300)
at com.ibm.servlet.engine.oselistener.SQEventListenerImp$ServiceRunnable.run(SQEventListenerImp.java:230)
at com.ibm.servlet.engine.oselistener.SQEventListenerImp.notifySQEvent(SQEventListenerImp.java:104)
at com.ibm.servlet.engine.oselistener.serverqueue.SQEventSource.notifyEvent(SQEventSource.java:216)
at com.ibm.servlet.engine.oselistener.serverqueue.SQWrapperEventSource$SelectRunnable.notifyService(SQWrapperEventSource.java:354)
at com.ibm.servlet.engine.oselistener.serverqueue.SQWrapperEventSource$SelectRunnable.run(SQWrapperEventSource.java:221)
at com.ibm.servlet.engine.oselistener.outofproc.OutOfProcThread$CtlRunnable.run(OutOfProcThread.java:248)
at java.lang.Thread.run(Thread.java:481)

Answer 3

问题出在人里。
哈哈，开玩笑。不要见怪。
我不懂websphere，所以没有办法帮助你。

Answer 4

出错信息不是提示了吗
你可以用 javac -deprecate YourClass.java
看一下哪里出问题了。

Answer 5

Sorry,错了，是
javac -deprecation YourClass.java

Answer 6

你试试这个吧：将：
if ((filename!=null)&&(filename.equals("")==false)) {
        count=mySmartUpload.save("/upload/");
}改为：
if (!(filename == null || "".equals(filename))) {
        count=mySmartUpload.save("/upload/");
}当判断为空的时候最好是： "".equals(StringVat)
而不是： StringVar.equals("")