求解决springMVC 中出现getOutputStream() has already been called for this response的有关问题-Java教程-爱易网页

求解决springMVC 中出现getOutputStream() has already been called for this response的有关问题

日期：2014-05-17　浏览次数：21042 次

求解决springMVC 中出现getOutputStream() has already been called for this response的问题。



@RequestMapping(value="queryMenusForManage")

	public @ResponseBody Map<String, Object> queryMenusForManage(ModelAndView mav, HttpServletRequest request, HttpServletResponse response) throws Exception {

		List<SysMenu> menuList = menuService.queryMenusForManage();

		dealMenu(menuList);

		NodeTree<SysMenu> nodeTree = new NodeTree<SysMenu>();

		List<SysMenu> dataList = nodeTree.getRootNodeTreeForJqgrid(menuList);

		Map<String, Object> resultMap = new HashMap<String, Object>();

		resultMap.put("rows", dataList); 

		return resultMap;

	}

我在controller中返回 @ResponseBody到前台，通过freemarker进行展示，就报了下面这样的错误，虽然对前台页面没啥影响，但后台一直这样报错很烦的。求解决



java.lang.IllegalStateException: getOutputStream() has already been called for this response

	at org.apache.catalina.connector.Response.getWriter(Response.java:611)

	at org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:198)

	at javax.servlet.ServletResponseWrapper.getWriter(ServletResponseWrapper.java:112)

	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:262)

	at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1180)

	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:950)

	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)

	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)

	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)

	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.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:167)

	at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)

	at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)

	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

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求解决springMVC 中出现getOutputStream() has already been called for this response的有关问题

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