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java.lang.IllegalStateException: Cannot forward after response has been committed	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:313)	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)	at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:688)	at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:658)	at org.apache.jsp.jr.jrcommonjsp.showJR_jsp._jspService(showJR_jsp.java:689)	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)	at com.scholar.common.Controller.doPost(Controller.java:194)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)	at com.scholar.jr.common.EduJRController.doPost(EduJRController.java:271)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)	at com.scholar.common.Controller.doPost(Controller.java:194)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)	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:213)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)	at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)	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:869)	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)	at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)	at java.lang.Thread.run(Unknown Source)