Servlet.service() sunucu jsp'si için istisna java.lang.IllegalStateException

Question

Yaylar DeferredResult kullanarak uzun bir yoklama mekanizmasını yöneten bir denetleyicim var. Ben denetleyici yöntemini birden çok kez çağrı zamanlarda aşağıda istisna olsun:

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

Yani biri veya hiçbiri kimliği için bir json yanıt ile bazı kimlikleri ve döner geçer bir çağrı views/getLongPollingGraphData yoktur. Sayfayı birkaç kez yüklediğimde, bu URL'yi bir kez daha çağırıyorsa yukarıdaki istisnayı alırım.

Karşılaştığım sorun, DeferredResult numaralı telefondan DeferredResult numaralı telefonu arayarak DeferredResult numaralı telefonu kullanarak zaman aşımına uğradığında veya yanıt verildiğinde bir haritadan kaldırıyorum. Ancak bu istisna durumunda onCompletion aranmaz ve harita üzerinde kalır. Bu istisna hakkında farklı mesajlar okudum ama bunlardan hiçbiriyle ilgili olamadım.

Aşağıda, denetleyici yöntemimin istisnası ve kısımlarının tüm yığın izlemesi yer almaktadır.

Nov 07, 2016 9:52:06 AM org.apache.catalina.core.ApplicationDispatcher invoke 
SEVERE: Servlet.service() for servlet jsp 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 javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:104) 
    at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125) 
    at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118) 
    at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:186) 
    at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:126) 
    at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:80) 
    at org.apache.jsp.WEB_002dINF.jsp.ClientAbortException_jsp._jspService(ClientAbortException_jsp.java:136) 
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) 
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:604) 
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:543) 
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:229) 
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264) 
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208) 
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:659) 
    at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:625) 
    at org.apache.catalina.core.AsyncContextImpl$1.run(AsyncContextImpl.java:239) 
    at org.apache.catalina.core.AsyncContextImpl.doInternalDispatch(AsyncContextImpl.java:382) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:215) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:299) 
    at org.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1652) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
    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:745) 


Nov 07, 2016 9:52:06 AM org.apache.catalina.core.ApplicationDispatcher invoke 
SEVERE: Servlet.service() for servlet main-dispatcher 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 javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:104) 
    at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125) 
    at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118) 
    at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:186) 
    at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:126) 
    at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:80) 
    at org.apache.jsp.WEB_002dINF.jsp.ClientAbortException_jsp._jspService(ClientAbortException_jsp.java:136) 
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) 
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:604) 
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:543) 
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:229) 
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264) 
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208) 
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:659) 
    at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:625) 
    at org.apache.catalina.core.AsyncContextImpl$1.run(AsyncContextImpl.java:239) 
    at org.apache.catalina.core.AsyncContextImpl.doInternalDispatch(AsyncContextImpl.java:382) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:215) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:299) 
    at org.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1652) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
    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:745) 


Nov 07, 2016 9:52:06 AM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet [main-dispatcher] in context with path [/test-web] threw exception [java.lang.IllegalStateException: getOutputStream() has already been called for this response] with root cause 
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 javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:104) 
    at org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:125) 
    at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:118) 
    at org.apache.jasper.runtime.PageContextImpl.release(PageContextImpl.java:186) 
    at org.apache.jasper.runtime.JspFactoryImpl.internalReleasePageContext(JspFactoryImpl.java:126) 
    at org.apache.jasper.runtime.JspFactoryImpl.releasePageContext(JspFactoryImpl.java:80) 
    at org.apache.jsp.WEB_002dINF.jsp.ClientAbortException_jsp._jspService(ClientAbortException_jsp.java:136) 
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) 
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) 
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:604) 
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:543) 
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:229) 
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264) 
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1208) 
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:992) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:939) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:915) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:811) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:620) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:796) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:727) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:748) 
    at org.apache.catalina.core.ApplicationDispatcher.doDispatch(ApplicationDispatcher.java:659) 
    at org.apache.catalina.core.ApplicationDispatcher.dispatch(ApplicationDispatcher.java:625) 
    at org.apache.catalina.core.AsyncContextImpl$1.run(AsyncContextImpl.java:239) 
    at org.apache.catalina.core.AsyncContextImpl.doInternalDispatch(AsyncContextImpl.java:382) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:215) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.asyncDispatch(CoyoteAdapter.java:299) 
    at org.apache.coyote.http11.AbstractHttp11Processor.asyncDispatch(AbstractHttp11Processor.java:1652) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
    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:745) 

Kontrolör yöntemi:

@RequestMapping(value = "views/getLongPollingGraphData", method = RequestMethod.GET, headers = "Accept=application/json") 
@ResponseBody 
public DeferredResult<WebServiceResponse> getLongGraphData(
     HttpServletRequest request, 
     @RequestParam(value = "ids") String ids) 
    throws Exception 
{ 
    //perform operations 

    //set time out this DeferredResult, after 5 seconds 
    final DeferredResult<WebServiceResponse> deferredResult = new DeferredResult<WebServiceResponse>(5000L, awrDefault); 
    //listOfViews is a list containing ids 
    mMapOfDeferredResultAndViews.put(deferredResult, listOfViews); 
    //more operations 

    deferredResult.onCompletion(new Runnable() { 
     @Override 
     public void run() 
     { 
      mMapOfDeferredResultAndViews.remove(deferredResult); 
     } 
    }); 

    return deferredResult; 
} 

Düzenleme: Ben sayfa sürekli yenilendiğinde bir org.apache.catalina.connector.ClientAbortException noktada atılmış olduğunu düşünüyorum. Bir jsp sayfasında işlemek için org.springframework.web.servlet.handler.SimpleMappingExceptionResolver kullanıyorum.

ana-memuru-servlet.xml

<bean 
    class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> 
    <property name="exceptionMappings"> 
     <props> 
      <prop key="java.lang.Exception">Exception</prop> 
      <prop key="org.apache.catalina.connector.ClientAbortException">ClientAbortException</prop> 
     </props> 
    </property> 
</bean> 

ClientAbortException.jsp

<%@page import="org.slf4j.LoggerFactory"%> 
<%@page import="org.slf4j.Logger"%> 
<%@page import="com.test.model.messages.Messages"%> 
<%@page import="java.util.Enumeration"%> 
<%@page import="org.codehaus.jackson.map.ObjectMapper"%> 
<%@page import="com.test.model.exceptions.TestException"%> 
<%@page import="com.test.web.exchange.WebServiceResponse"%> 
<%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
    pageEncoding="ISO-8859-1"%> 
<% 
    Logger LOGGER = LoggerFactory.getLogger(this.getClass()); 
    LOGGER.debug("Exception caught in JSP: ", (Exception) request.getAttribute("exception")); 

    boolean bReturnJson = false; 

    Enumeration<?> headerNames = request.getHeaderNames(); 

    while (headerNames.hasMoreElements()) { 
     String headerName = (String) headerNames.nextElement(); 

     if (headerName.equals("accept")) { 
      if (request.getHeader(headerName).equals(
        "application/json; charset=utf-8")) { 
       bReturnJson = true; 
      } 

      break; 
     } 
    } 

    if (bReturnJson) { 
     WebServiceResponse awsr = new WebServiceResponse(); 

     TestException exception = new TestException(
       Messages.ERROR.toString(), 
       (Exception) request.getAttribute("exception")); 

     awsr.setException(exception); 

     ObjectMapper mapper = new ObjectMapper(); 
     out.write(mapper.writeValueAsString(awsr)); 
    } else { 
     ((Exception) request.getAttribute("exception")).printStackTrace(); 
%> 

HTML error! 

<% 
      } 
%> 

Answer 1

sorun açıktır:

http://docs.oracle.com/javaee/7/api/javax/servlet/ServletRequest.html#getInputStream--

Atar Aşağıda kodudur : IllegalStateException - getReader() yöntemi zaten

öğrenmek için bu isteği, Filtre (ya da benzer bir şey) JSP servlet bulmadan önce getReader() yöntemini çağırır çağrısında edilmişse, bir kesme noktası ayarlamak IllegalStateException. JSP'nizi arayın. Hata ayıklayıcınızın çağrı yığında, ServletRequest arabiriminin özel uygulama sınıfını bulun (bu, kapsayıcıya özeldir). GetReader() için bir kesme noktası ayarlayın, ardından tekrar JSP'nizi arayın ve kök nedeniniz var. Eğer gerçekten birden çok kez getReader() veya getInputStream() çağırmak varsa

, bir size yardımcı olabilir HttpServletRequestWrapper, örneğin bkz:

How to read InputStream multiple times

https://gist.github.com/calo81/2071634

senin tüm proje kodu No- olmadan Bu İstisna'nın nedenini öğrenebilecektir.