今天在做SSH项目的时候，出现了这个错误。百思不得其解，网上的答案都不能解决我的问题…..

后来，一气之下就重新写，写了之后发现在JSP遍历集合的时候出错了。

<s:iterator value="rolePrivilegeSet"><s:property value="#privilegeMap[compositeKey.code]"/></s:iterator>

最后发现是Hibernate懒加载的问题，在配置文件中设置不懒加载，就解决掉这个问题了。

Struts Problem ReportStruts has detected an unhandled exception:Messages:
Stream closed
File:   org/apache/jasper/runtime/JspWriterImpl.java
Line number:    210
Stacktracesjava.io.IOException: Stream closedorg.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:210)org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:115)org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:177)org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:915)org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:656)org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:132)org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:188)com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:369)com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:273)org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:564)org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:244)org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)org.apache.catalina.core.StandardContextValve.__invoke(StandardContextValve.java:161)org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java)org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:550)org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:380)org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:288)java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)java.lang.Thread.run(Thread.java:722)

二次更新:
我把getContextMap()换成是getApplicatoin()，也会出现这样的错误….

ActionContext.getContext().getContextMap().put("privilegeMap", Constant.PRIVILEGE_MAP);

留意域对象有没有错误！