primefaces java,Primefaces downloadFile java.io.IOException:流在第二次后关闭

I have issue with primefaces 5.0 component p:fileDownload , I have following bean store DefaultStreamedContent , and I get the value stored to download it simply :

Bean :

public class EBMail implements Serializable {

private DefaultStreamedContent attachment;

// @ here setter and getter too .

}

and from XHTML file :

I get mail attachment file for first time, in 2nd time I get the following exception :

WARNING: java.io.IOException: Stream Closed

javax.faces.FacesException: java.io.IOException: Stream Closed

at org.primefaces.component.filedownload.FileDownloadActionListener.processAction(FileDownloadActionListener.java:87)

at javax.faces.event.ActionEvent.processListener(ActionEvent.java:88)

at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:813)

at javax.faces.component.UICommand.broadcast(UICommand.java:300)

at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:790)

at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1282)

at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)

at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)

at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)

at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:744)

Caused by: java.io.IOException: Stream Closed

at java.io.FileInputStream.readBytes(Native Method)

at java.io.FileInputStream.read(FileInputStream.java:243)

at org.primefaces.component.filedownload.FileDownloadActionListener.processAction(FileDownloadActionListener.java:77)

... 30 more

org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet [FacesServlet] in context with path [/faces] threw exception

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

at org.apache.catalina.connector.Response.getWriter(Response.java:648)

at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:213)

at com.sun.faces.context.ExternalContextImpl.getResponseOutputWriter(ExternalContextImpl.java:846)

at com.sun.faces.context.PartialViewContextImpl.createPartialResponseWriter(PartialViewContextImpl.java:504)

at com.sun.faces.context.PartialViewContextImpl.access$300(PartialViewContextImpl.java:79)

at com.sun.faces.context.PartialViewContextImpl$DelayedInitPartialResponseWriter.getWrapped(PartialViewContextImpl.java:642)

at javax.faces.context.PartialResponseWriter.startDocument(PartialResponseWriter.java:120)

at org.omnifaces.context.OmniPartialViewContext$OmniPartialResponseWriter.startDocument(OmniPartialViewContext.java:270)

at org.primefaces.context.PrimePartialResponseWriter.startDocument(PrimePartialResponseWriter.java:152)

at com.sun.faces.context.AjaxExceptionHandlerImpl.handlePartialResponseError(AjaxExceptionHandlerImpl.java:201)

at com.sun.faces.context.AjaxExceptionHandlerImpl.handle(AjaxExceptionHandlerImpl.java:126)

at javax.faces.context.ExceptionHandlerWrapper.handle(ExceptionHandlerWrapper.java:100)

at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:119)

at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:198)

at javax.faces.webapp.FacesServlet.service(FacesServlet.java:646)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)

at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)

at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)

at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)

at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)

at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)

at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

at java.lang.Thread.run(Thread.java:744)

I'm running on JFS 2.2.7 , Primefaces 5.0 , I upload file into bean my issue when I download it for 2nd time, even for another object 'mail' .

Any solution, I looked after many solutions around nothing helped me or I've already tested it.

解决方案

I solved issue finally, I make new class store my data, and action that prepare stream to download from my class object, and when download file I read bytes from my class bytes, like the following:

Class:

public class Attachment implements Serializable {

private String name;

private String type;

private String encoding;

private byte[] data;

// ... Setters and getters ...

public Attachment () {

this.encoding = "UTF-8";

}

}

Bean:

public class MailBean implements Serializable {

// alot of properties

private Attachment attachment;

// setters and getters

}

Managed Bean :

public class MailManagedBean implements Serializable {

private DefaultStreamedContent attachmentToDownload;

private MailBean mail;

// @ here setter and getter too .

public void prepare() {

InputStream stream = new ByteArrayInputStream(mail.getAttachment.getData());

attachmentToDownload = new DefaultStreamedContent(stream, mail.getAttachment.getType(), mail.getAttachment.getName(), mail.getAttachment.getEncoding());

}

}

In XHTML file (I added action) :

rendered="#{mbMail.mail.attachment != null}" action="#{mbMail.prepare()}">