Tomcat 6.0.20 Returning NullPointer upon closing response.getWriter()
Tomcat returned NullpointerException upon closing response.getWriter(). This does not occur always but sometimes. Not able to figure out the reason. java.lang.NullPointerException at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:740) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434) at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:390) at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:987) at org.apache.coyote.Response.action(Response.java:183) at org.apache.coyote.Response.finish(Response.java:305) at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276) at org.apache.catalina.connector.CoyoteWriter.close(CoyoteWriter.java:108) at com.onmobile.platform.sovxml.ControlServlet.doGet(ControlServlet.java:3482) -- #response.getWriter().close() at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:361) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) at java.lang.Thread.run(Thread.java:595) -- View this message in context: http://old.nabble.com/Tomcat-6.0.20-Returning-NullPointer-upon-closing-response.getWriter%28%29-tp27687328p27687328.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 6.0.20 Returning NullPointer upon closing response.getWriter()
Hi, have you checked, that you aren't sharing the request object by saving it in an instance variable? Sharing it would explain such an error. Bye Felix chinmaytotekar chinmaytote...@gmail.com schrieb: Tomcat returned NullpointerException upon closing response.getWriter(). This does not occur always but sometimes. Not able to figure out the reason. java.lang.NullPointerException at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:740) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434) at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:390) at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:987) at org.apache.coyote.Response.action(Response.java:183) at org.apache.coyote.Response.finish(Response.java:305) at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276) at org.apache.catalina.connector.CoyoteWriter.close(CoyoteWriter.java:108) at com.onmobile.platform.sovxml.ControlServlet.doGet(ControlServlet.java:3482) -- #response.getWriter().close() at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:361) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) at java.lang.Thread.run(Thread.java:595) -- View this message in context: http://old.nabble.com/Tomcat-6.0.20-Returning-NullPointer-upon-closing-response.getWriter%28%29-tp27687328p27687328.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
Re: Tomcat 6.0.20 Returning NullPointer upon closing response.getWriter()
Thanks The problem was response.getWriter() object was declared as global in servlet, so it became common to all threads. and if one thread closes it, it used to give NullPtrException in other threads. Felix Schumacher wrote: Hi, have you checked, that you aren't sharing the request object by saving it in an instance variable? Sharing it would explain such an error. Bye Felix chinmaytotekar chinmaytote...@gmail.com schrieb: Tomcat returned NullpointerException upon closing response.getWriter(). This does not occur always but sometimes. Not able to figure out the reason. java.lang.NullPointerException at org.apache.coyote.http11.InternalOutputBuffer.realWriteBytes(InternalOutputBuffer.java:740) at org.apache.tomcat.util.buf.ByteChunk.flushBuffer(ByteChunk.java:434) at org.apache.coyote.http11.InternalOutputBuffer.endRequest(InternalOutputBuffer.java:390) at org.apache.coyote.http11.Http11Processor.action(Http11Processor.java:987) at org.apache.coyote.Response.action(Response.java:183) at org.apache.coyote.Response.finish(Response.java:305) at org.apache.catalina.connector.OutputBuffer.close(OutputBuffer.java:276) at org.apache.catalina.connector.CoyoteWriter.close(CoyoteWriter.java:108) at com.onmobile.platform.sovxml.ControlServlet.doGet(ControlServlet.java:3482) -- #response.getWriter().close() at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:567) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:361) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675) at java.lang.Thread.run(Thread.java:595) -- View this message in context: http://old.nabble.com/Tomcat-6.0.20-Returning-NullPointer-upon-closing-response.getWriter%28%29-tp27687328p27687328.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org -- View this message in context: http://old.nabble.com/Tomcat-6.0.20-Returning-NullPointer-upon-closing-response.getWriter%28%29-tp27687328p27699412.html Sent from the Tomcat - User mailing list archive at Nabble.com. - To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
