使用s:form产生stream closed错误

场景描述：

使用s:form报错，产生stream closed错误；

JSP页面中去掉s:form就恢复正常

原因分析：

因为无法找到form标签，可能是因为重新自定义了标签

解决方法：

查看struts.xml文件，是否重新自定义了标签，如下：

    <constant name="struts.ui.templateDir" value="WEB-INF/template/" />

删除该记录即可

报错记录：

Struts Problem Report

Struts has detected an unhandled exception:

Messages:	Stream closed
File:	org/apache/jasper/runtime/JspWriterImpl.java
Line number:	273

Stacktraces

java.io.IOException: Stream closed

    org.apache.jasper.runtime.JspWriterImpl.ensureOpen(JspWriterImpl.java:273)
    org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:177)
    org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:235)
    org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:1001)
    org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:687)
    org.apache.struts2.dispatcher.ServletDispatcherResult.doExecute(ServletDispatcherResult.java:123)
    org.apache.struts2.dispatcher.StrutsResultSupport.execute(StrutsResultSupport.java:186)
    com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:362)
    com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266)
    org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
    org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
    org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
    org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:91)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    com.dice.voip.web.oam.actions.accounts.LoginFilter.doFilter(LoginFilter.java:37)
    org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
    org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
    org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
    org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
    org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
    org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
    org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
    org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
    org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
    org.mortbay.jetty.Server.handle(Server.java:326)
    org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:536)
    org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:915)
    org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:539)
    org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
    org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:405)
    org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
    org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)