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)
--
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