在单机上用的是TOMCAT没问题，部署到WEBLOGIC10.3.6后，时不时就提示错误，可就不知道哪出问题了，以下是错误消息：
[ServletContext@902436674[app:fjgl module:fjgl path:/fjgl spec-version:2.5]] Root cause of ServletException. java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after getOutputStream() at weblogic.servlet.internal.ServletResponseImpl.getWriter(ServletResponseImpl.java:318) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:366) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:283) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:233) at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:167) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:264) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1201) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:933) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) at javax.servlet.http.HttpServlet.service(HttpServlet.java:821) at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227) at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301) at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:27) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at com.tacitknowledge.filters.cache.CacheHeaderFilter.doFilterInternal(CacheHeaderFilter.java:67) at com.tacitknowledge.filters.GenericFilter.doFilter(GenericFilter.java:64) at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:57) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106) at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696) at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321) at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179) at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490) at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256) at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
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Root cause of ServletException. java.lang.IllegalStateException: strict servlet API: cannot call getWriter() after getOutputStream() 是否有读写权限的问题呢？
看看 com.tacitknowledge.filters.GenericFilter.doFilter(GenericFilter.java:64) 这个是自己写的类吧，看能分析出点线索不
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“时不时”！！！
感觉楼主应该先确定什么样的操作下会出现错误。
再了解下不同应用服务器、不同操作系统给项目带来的影响
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: cannot call getWriter() after getOutputStream()，问题在这吧，你有一个servlet里边，同时调用了这两个东东，之所以会报过滤器的错，是因为会经过这个过滤器到你写的servlet 啊
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1、楼主这排版。。。
2、getWriter() 和 getOutputStream() 是有冲突的，不能同时调用