getOutputStream() has already been called for this response

[sabarinathsss]

Hi

I am using JSF 2.1 and use the following code to down load the file.

Code used in Managed bean :

public void downloadFile() throws Exception

{

  HttpServletResponse response = (HttpServletResponse) FacesContext.getCurrentInstance().getExternalContext().getResponse(); 

  Map<String,String> params = FacesContext.getCurrentInstance().getExternalContext().getRequestParameterMap();    

  this.setFileName(params.get("FileName"));

  this.setFilePath(params.get("FileLocation"));   

  response.setHeader("Content-disposition","attachment;filename="+this.getFileName());

  File file=new File(this.getFilePath(),this.getFileName());

  try {

   sendFile(file,response);

  }catch (Exception exception) {

   throw new Exception (exception.getMessage());

  }

}

private void sendFile(File fileOut, HttpServletResponse response) throws Exception

{

  response.setContentType("application/vnd.ms-excel");

  FileInputStream fis = new FileInputStream(fileOut);

  BufferedInputStream bis = new BufferedInputStream(fis);

  int ch=0;

  byte[] buf = new byte[10000];

  try{

   while((ch = bis.read(buf)) >= 0) {

    response.getOutputStream().write(buf,0,ch);

   }

  }catch (Exception exception) {

   throw new Exception (exception.getMessage());

  }

  finally{

   response.getOutputStream().flush(); 

   response.getOutputStream().close();

   bis.close();

   fis.close();

  }

}

Error :

java.lang.IllegalStateException: getOutputStream() has already been called for this response

       at org.apache.catalina.connector.Response.getWriter(Response.java:614) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:199) [jbossweb-7.0.13.Final.jar:]

       at com.sun.faces.context.ExternalContextImpl.getResponseOutputWriter(ExternalContextImpl.java:723) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at javax.faces.context.ExternalContextWrapper.getResponseOutputWriter(ExternalContextWrapper.java:669) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]

       at com.sun.faces.application.view.FaceletViewHandlingStrategy.createResponseWriter(FaceletViewHandlingStrategy.java:938) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(FaceletViewHandlingStrategy.java:377) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at com.sun.faces.application.view.MultiViewHandler.renderView(MultiViewHandler.java:125) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at javax.faces.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:288) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]

       at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:121) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:139) [jsf-impl-2.1.7-jbossorg-2.jar:]

       at javax.faces.webapp.FacesServlet.service(FacesServlet.java:594) [jboss-jsf-api_2.1_spec-2.0.1.Final.jar:2.0.1.Final]

       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:329) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:248) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:275) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) [jbossweb-7.0.13.Final.jar:]

       at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.event(JBossWebContext.java:67)

       at org.jboss.modcluster.container.jbossweb.JBossWebContext$RequestListenerValve.invoke(JBossWebContext.java:48)

       at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:153) [jboss-as-web-7.1.1.Final.jar:7.1.1.Final]

       at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:155) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [jbossweb-7.0.13.Final.jar:]

       at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:368) [jbossweb-7.0.13.Final.jar:]

       at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:877) [jbossweb-7.0.13.Final.jar:]

       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:671) [jbossweb-7.0.13.Final.jar:]

       at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:930) [jbossweb-7.0.13.Final.jar:]

       at java.lang.Thread.run(Thread.java:619) [rt.jar:1.6.0_06]

Thanks in Advance

Sabarinath

[godoy]

this is my example , kisses.

FacesContext facesContext = FacesContext.getCurrentInstance();

            File file = new File(AnexosUtils.PATH + pasta + File.separator

                    + anexo.getNomeDoArquivo());

            byte[] bytesFile = getBytesFromFile(file);

            HttpServletResponse response = (HttpServletResponse) facesContext

                    .getExternalContext().getResponse();

            ServletContext servletcontext = (ServletContext) facesContext

                    .getExternalContext().getContext();

            try {

                String mimetype = servletcontext.getMimeType(anexo

                        .getNomeDoArquivo().toLowerCase());

                int tamanho = bytesFile.length;

                response.setContentType((mimetype != null) ? mimetype

                        : "application/octet-stream");

                response.setHeader("Content-Disposition",

                        "attachment;filename=\"" + anexo.getNomeDoArquivo()

                                + "\"");

                response.setContentLength(tamanho);

                response.getOutputStream().write(bytesFile, 0, tamanho);

                response.getOutputStream().flush();

                facesContext.responseComplete();

                facesContext.renderResponse();

[sabarinathsss]

Hi Leandro godoy,

Thanks for your reply .

facesContext.responseComplete();

facesContext.renderResponse();

After adding these two lines its working fine.

Regards,

Sabarinath