Strict servlet API: cannot call getWriter() after getOutputStream()

Hi,
Am getting below exception when i click on create report button.
It was successfully running in development machine, when we deploy the same application into the testing server.
what could be problem..
am using JSF 2.0, Primefaces 3.5, Jdeveloper and Weblogic 12 C server..
java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after getOutputStream()
at weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.java:299)
at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:362)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:140)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:155)

Issue resolved, because testing machine doesn't have specified font in font directory.
recompiled the jrxml file with arial font its working both the env machine..

Similar Messages

IllegalStateException: strict servlet API: cannot call getWriter()

I am getting an exception in Weblogic when I am trying to display a pdf file in a web page.
java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after getOutputStream()
I am using the following code code
ByteArrayOutputStream baos;
ServletOutputStream out = response.getOutputStream();
baos.writeTo(out);
I have seen this error in so many discussion forum and there is no proper solution for this error.
I am able to see the pdf page even with this exception. But I want to get rid of this exception also from Weblogic.

I just did a quick (and dirty!) test with the following to display a jpg image and it worked for me without any trace of an exception:
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("image/jpg");
        File f = new File("/Users/me/Desktop/IMG_0032.JPG");
        byte[] bits = new byte[(int) f.length()];
        FileInputStream fos = new FileInputStream(f);
        fos.read(bits);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        baos.write(bits, 0, bits.length);
        baos.writeTo(response.getOutputStream());
        baos.close();
        fos.close();
    }Note that there is no call anywhere to response.getWriter() in that.
I'd guess the exception is directing you at what the problem is, at least as the server is seeing it -- somewhere in the execution of the request path there would appear to be call to response.getWriter() occurring after a call to response.getOutputStream() has been called, which is not permitted on WLS according to the error message.
Do you use filters on this app? If response.getWriter() has been called on the same response object in a post request filter phase, that would be on the same call path with the same response object and would result in the exception.
-steve-

Strict servlet API: cannot call getOutputStream() after getWriter()

i have an applet which will communicate with a servet , but got following error in the servlet
java.lang.IllegalStateException: strict servlet API: cannot call getOutputStream() after getWriter()
at weblogic.servlet.internal.ServletResponseImpl.getOutputStream(ServletResponseImpl.java:280)
at oracle.osl.lt.web.servlets.AudioServlet._processGetPlayList(AudioServlet.java:235)
at oracle.osl.lt.web.servlets.AudioServlet.doPost(AudioServlet.java:91)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.security.wls.filter.SSOSessionSynchronizationFilter.doFilter(SSOSessionSynchronizationFilter.java:276)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:111)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:413)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:94)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:161)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:136)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
SUBSYSTEM = HTTP USERID = <WLS Kernel> SEVERITY = Error THREAD = [ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)' MSGID = BEA-101020 MACHINE = p1dvosl02 TXID = CONTEXTID = TIMESTAMP = 1318836952580
WatchAlarmType: AutomaticReset
WatchAlarmResetPeriod: 30000
>
*below _processGetPlayList() is called by doPost() of the servlet.*
seems the exception is thrown due to response.getOutputStream()?
any idea? thanks!!
private void _processGetPlayList(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
try {
ObjectOutputStream objectOut =
new ObjectOutputStream(new BufferedOutputStream(response.getOutputStream()));
try {
RichDataDTOExt richData = _getRichData(request);
if (richData == null) {
Log.web().debug(s7);
throw new ServletException(s7);
objectOut.writeObject(richData.getAudioRecordings().getAll(new ContentRefDTO[0]));
finally {
objectOut.close();
catch (IOException e) {
Log.web().error(e.getMessage());
throw new ServletException();
}

thanks for you reply. but seems we don't call getWriter() at all in our code.
actually this error only happen in our customer's env, no this issue in our development env.
besides using getOutputStream() and getWriter() simultaneously for same response, is this maybe related with some web server configuration?

IllegalStateException: strict servlet API:

Hello All,
I'm trying to do a simple rpc webservice. The wsgen process runs to a successful
completion and I deploy the result to Weblogic 6.1 sp1, which is also successful.
When accessing this new service, everything runs fine until the response is generated
and I get following stack trace:
 
java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after
getOutputStream() 
at weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.java:160)
 
at weblogic.soap.server.servlet.StatelessBeanAdapter.reportFault(StatelessBeanAdapter.java:238)
 
etc...
It would appear that this is being generated in a Weblogic class. There is no
mention of my EJB in the stack trace.
Has anyone seen this error? Or, better yet, what causes it and what is the solution?
Thanks,
Kris

Kris,
I too have run into this problem with Weblogic 6.1. The first time I
got this exception was when I had java.util.Date attributes within my
serializable data object that I was returning from my WebService interface.
When those date attributes were set with values, I would get the exception
outlined below. Then I set those date values to null, and everything worked
fine.
Coincidentally, I'm currently have the same problem with a serializable
object that has another serializable object defined as an attribute. I'm
not wondering if Weblogic can't handle Serializable objects within other
Serializable objects?
I guess my suggestion would be to look at the values you are returning
and passing in as parameters to your WebService interface, are there any
Serializable objects that have other Serializable objects defined as
attributes ( Strings don't count )? If so, set them to null and try your
WebService again. ( Does that make sense?? )
Hope this helps?
Jeff
"Kris W. Keener" <[email protected]> wrote in message
news:3bd71794$[email protected]..
>
Hello All,
I'm trying to do a simple rpc webservice. The wsgen process runs to asuccessful
completion and I deploy the result to Weblogic 6.1 sp1, which is alsosuccessful.
When accessing this new service, everything runs fine until the responseis generated
and I get following stack trace:
 
java.lang.IllegalStateException: strict servlet API: cannot callgetWriter() after
getOutputStream() 
atweblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.
java:160)
 
atweblogic.soap.server.servlet.StatelessBeanAdapter.reportFault(StatelessBeanA
dapter.java:238)
 
etc...
It would appear that this is being generated in a Weblogic class. There isno
mention of my EJB in the stack trace.
Has anyone seen this error? Or, better yet, what causes it and what is thesolution?
>
Thanks,
Kris

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Problem with getWriter() and getOutputStream()

Hi,
I have written two methods. Name it as A(),B().
In A() Method i am calling getWriter()
In B() Method I am calling getOutputStream().
But i got the IllegalStateException saying that,
Cannot call getOutputStream() after getWriter().
Both are required for me.
I should not change the A() Method which is written by somebody and all are using the same i eman A().
But i need getOutputStream() in My method i mean B().
Please tell me how to avoid this problem.
Thanks in Advance

It sounds like you are working on a Servlet and trying to use the Response object. If so then you have fundamental problems because once response.getWriter() has been called one cannot then use response.getOutputStream(). The call to response.getWriter() wraps the OutputStream in a Writer that may buffer bytes.

Strict servlet API: cannot call getWriter() after getOutputStream()

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