当对话框结束时，我在我的 Rivr 应用程序中记录了异常（例如用户挂断）我并没有真正遇到任何问题，但日志中出现了很多问题。有什么方法可以处理/解决/阻止它们吗？
（使用 WAS Liberty Profile 8.5.5.7）
谢谢
[10/7/15 20:28:30:396 UTC] 00009c81 org.jboss.weld.Servlet W WELD-000712: Unable to dissociate context org.jboss.weld.context.http.LazyHttpConversationContextImpl@f6571a54 from the storage com.ibm.ws.webcontainer31.srt.SRTServletRequest31@342e6aa
[10/7/15 20:28:30:447 UTC] 00009ca3 com.ibm.ws.webcontainer.util.ApplicationErrorUtils E SRVE0777E: Exception thrown by application class 'com.ibm.ws.session.http.HttpSessionImpl.getAttributeNames:225'
java.lang.IllegalStateException
at com.ibm.ws.session.http.HttpSessionImpl.getAttributeNames(HttpSessionImpl.java:225)
at com.ibm.ws.session.SessionData.getAttributeNames(SessionData.java:186)
at com.ibm.ws.session.HttpSessionFacade.getAttributeNames(HttpSessionFacade.java:152)
at com.nuecho.rivr.core.servlet.session.Session.keepAlive(Session.java:76)
at com.nuecho.rivr.core.servlet.session.SessionContainer.getSession(SessionContainer.java:120)
at com.nuecho.rivr.core.servlet.DialogueServlet.getExistingSession(DialogueServlet.java:510)
at com.nuecho.rivr.core.servlet.DialogueServlet.getSession(DialogueServlet.java:495)
at com.nuecho.rivr.core.servlet.DialogueServlet.process(DialogueServlet.java:376)
at com.nuecho.rivr.core.servlet.DialogueServlet.doPost(DialogueServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1287)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:778)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:475)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:146)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:78)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:1020)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1142)
at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:4867)
at com.ibm.ws.webcontainer31.osgi.webapp.WebApp31.handleRequest(WebApp31.java:523)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.handleRequest(DynamicVirtualHost.java:297)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:997)
at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.run(DynamicVirtualHost.java:262)
at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink$TaskWrapper.run(HttpDispatcherLink.java:955)
at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink.ready(HttpDispatcherLink.java:341)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:470)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleNewRequest(HttpInboundLink.java:404)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.processRequest(HttpInboundLink.java:284)
at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.ready(HttpInboundLink.java:255)
at com.ibm.ws.tcpchannel.internal.NewConnectionInitialReadCallback.sendToDiscriminators(NewConnectionInitialReadCallback.java:174)
at com.ibm.ws.tcpchannel.internal.NewConnectionInitialReadCallback.complete(NewConnectionInitialReadCallback.java:83)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.requestComplete(WorkQueueManager.java:504)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.attemptIO(WorkQueueManager.java:574)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager.workerRun(WorkQueueManager.java:929)
at com.ibm.ws.tcpchannel.internal.WorkQueueManager$Worker.run(WorkQueueManager.java:1018)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)