Multipart request with HttpServletResponseWrapper (java.lang.NullPointerException)

[Csaba Palhidy]

Hy All,

Sorry, I don't speak very good English.
My problem:
-I do in Filter:

HttpServletResponse res = (HttpServletResponse) response;
BufferedHttpResponseWrapper responseWrapper = new BufferedHttpResponseWrapper(res);
responseWrapper.setContentType(res.getContentType());

chain.doFilter(request, responseWrapper);

byte[] origXML = responseWrapper.getBuffer( );
response.setContentLength(origXML.length);
response.setContentType("text/html");
response.getOutputStream().write(origXML);
response.flushBuffer();

If the request type is multipart then I get an error message:

Error 500--Internal Server Error

java.lang.NullPointerException
	at com.opensymphony.xwork2.util.LocalizedTextUtil.findText(LocalizedTextUtil.java:373)
	at org.apache.struts2.interceptor.FileUploadInterceptor.getTextMessage(FileUploadInterceptor.java:450)
	at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:324)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:142)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:166)
	at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
	at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
	at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:485)
	at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:527)
	at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
	at filter.CheckFilter.doFilter(CheckFilter.java:109)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at filter.Replacement.doFilter(Replacement.java:71)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
	at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
	at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

Only multipart request throw exception and if i skip the wrapper is good too.
Action is executed, get and set method is executed. Jsp creating throw the exception. (Struts 2)

Any idea?

Thanks,
Palidy

[Joe Ess]

Welcome to the JavaRanch.

These lines in your error:

   
    at com.opensymphony.xwork2.util.LocalizedTextUtil.findText(LocalizedTextUtil.java:373)  
    at org.apache.struts2.interceptor.FileUploadInterceptor.getTextMessage(FileUploadInterceptor.java:450) 

have me thinking this is a text resource problem. The File Upload Interceptor uses several text properties to display errors. Do you have those properties declared? (if that is the problem I would be surprised that it does not fail more gracefully).

[Csaba Palhidy]

Hy hy!

Thanks

Joe Ess wrote:have me thinking this is a text resource problem. The File Upload Interceptor uses several text properties to display errors. Do you have those properties declared? (if that is the problem I would be surprised that it does not fail more gracefully).

Unfortunately, It's not help. Problem remains the same.
Any other idea?

If this running in debug mode, this drop exception in console too:

java.lang.NullPointerException
	at weblogic.servlet.internal.ServletResponseImpl.sendContentError(ServletResponseImpl.java:610)
	at weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.java:654)
	at javax.servlet.http.HttpServletResponseWrapper.sendError(HttpServletResponseWrapper.java:118)
	at response.BufferedHttpResponseWrapper.sendError(BufferedHttpResponseWrapper.java:75)
	at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:771)
	at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:506)
	at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:527)
	at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
	at filter.CheckFilter.doFilter(CheckFilter.java:109)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at filter.Replacement.doFilter(Replacement.java:83)
	at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
	at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
	at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
	at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
	at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
	at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
	at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)

This step is thrown: WebAppServletContext.execute(ServletRequestImpl, ServletResponseImpl) line: 2183

[Joe Ess]

Unfortunately, It's not help. Problem remains the same.

I don't think so. The previous error was:

at com.opensymphony.xwork2.util.LocalizedTextUtil.findText(LocalizedTextUtil.java:373)  

This error is:

 at weblogic.servlet.internal.ServletResponseImpl.sendContentError(ServletResponseImpl.java:610)  

So you fixed the text resource problem.
You have two problems:
1. Your request is failing for some reason.
2. You cannot communicate this error, which causes other errors.
Perhaps catching the exception thrown in doFilter and checking that exception's cause (invoke getCause, print its stack trace, then call getCause on it because exceptions can be chained together) would shed some light on the issue. I'd like to see your filter source too.