[
http://issues.apache.org/jira/browse/MYFACES-612?page=comments#action_12356276
]
Jeremy Green commented on MYFACES-612:
--------------------------------------
This problem still occurs with version 1.1.1 of myfaces-all.jar:
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.IllegalStateException: Cannot forward after response has been
committed
at
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:314)
at
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at
org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
at
org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
at
org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:738)
at
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
at
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
> IllegalStateException: Cannot forward after response has been committed
> -----------------------------------------------------------------------
>
> Key: MYFACES-612
> URL: http://issues.apache.org/jira/browse/MYFACES-612
> Project: MyFaces
> Type: Bug
> Components: Implementation
> Versions: 1.1.0
> Environment: Tomcat 5.5.7, Sun JDK 1.5.0, Mozilla 1.7.10 and Linux.
> Reporter: Jeremy Green
>
> Rapid, multiple clicks on the h:commandButton in the test case given below
> produce an IllegalStateException and a blank response about 10% of the time.
> The JSF state-saving method can be client or server. A blank page is sometimes
> returned even if the clicks are not rapid.
> The Sun JSF RI 1.1_01 shows the same problem:
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6326655
> The stack trace is:
> SEVERE: Servlet.service() for servlet Faces Servlet threw exception
> java.lang.IllegalStateException: Cannot forward after response has been
> committed
> at
> org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:314)
> at
> org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
> at
> org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
> at
> org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
> at
> org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:300)
> at javax.faces.webapp.FacesServlet.service(FacesServlet.java:95)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at
> org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:362)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:738)
> at
> org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526)
> at
> org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
> at
> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
> at java.lang.Thread.run(Thread.java:595)
> Here is the test case:
> index.jsp:
> <%@ taglib uri="http://java.sun.com/jsf/html"; prefix="h" %>
> <%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f" %>
> <html>
> <head></head>
> <body>
> <f:view>
> <h:form>
> <p>
> <h:commandButton value="Submit" />
> </p>
> <p>
> <h:graphicImage value="image.png" />
> </p>
> </h:form>
> </f:view>
> </body>
> </html>
> SlowServlet.java, mapped to image.png in web.xml:
> public class SlowServlet extends HttpServlet {
>
> protected void doGet(HttpServletRequest req, HttpServletResponse resp)
> throws ServletException, IOException {
>
> BufferedImage image;
> OutputStream os;
>
> image = new BufferedImage(100, 100,
> BufferedImage.TYPE_INT_ARGB);
> os = resp.getOutputStream();
> resp.setContentType("image/png");
> try {
> Thread.sleep(1000);
> } catch (InterruptedException e) {
> throw new ServletException(e);
> }
> try {
> ImageIO.write(image, "png", os);
> os.close();
> } catch (IOException e) {
> }
>
> }
>
> }
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