公司的项目是s1sh 的，现在在action执行完相应代码之后findForward到一个jsp页面A。
页面A引用了页面B，页面B引用(jsp:include)了页面C。页面C中 link 了一个css
<link href="<%=request.getContextPath()%>/webapps/scripts/lighttree/jquery.lightTreeview.css" rel="stylesheet" type="text/css" />
<link href="<%=request.getContextPath()%>/webapps/styles/left.css" rel="stylesheet" type="text/css" />
现在报错：
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:312)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:388)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397)
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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at org.apache.taglibs.standard.tag.common.core.ImportSupport.acquireString(ImportSupport.java:296)
at org.apache.taglibs.standard.tag.common.core.ImportSupport.doEndTag(ImportSupport.java:161)
//主要报错地方
at org.apache.jsp.webapps.pages.netTransport.clientBaseInfo_jsp._jspx_meth_c_005fimport_005f0(clientBaseInfo_jsp.java:811)
at org.apache.jsp.webapps.pages.netTransport.clientBaseInfo_jsp._jspService(clientBaseInfo_jsp.java:518)
clientBaseInfo_jsp.java:811 行是 out.write("\t\t\t\t\t\t");
只要删除了哪个css的引用项目就可以正常运行。ABC三个页面从前用都是好好的，也没有做什么大的改动。但是只要include B也面的jsp都会报错。请大家帮忙分析下具体的原因。
