无法转发.响应已提交.错误 [英] Cannot forward.Response already committed. Error

问题描述

我正在使用以下命令从jsp调用servlet:

I am calling a servlet from jsp using

//My servlet code is:
public void doGet(HttpServletRequest request, HttpServletResponse response)
       {
           String template="test";   
           abcViewBean punchOutCan = new abcViewBean();
           punchOutCan.setPunchOutCanonicalRes(template);
           try {
            request.getRequestDispatcher("/PunchOutCanonicalError.jsp").forward(request,response);
        } catch (ServletException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
       }

我的JSP代码是:

<jsp:include page="/PunchOutCanonicalServlet" flush="true"/>  
<c:out value="${punchOutCan.punchOutCanonicalRes}" />

请提出建议，如何摆脱这种情况.

Please suggest, how to get rid of this.

推荐答案

因为要在JSP中导入响应，所以从servlet的doGet中排除(删除)此语句.

Exclude (remove) this statement from doGet of servlet because you're importing the response in JSPs.

request.getRequestDispatcher("/PunchOutCanonicalError.jsp")
    .forward(request,response);

doGet必须为:

@Override
public void doGet(HttpServletRequest request, 
                  HttpServletResponse response)
                    throws ServletException,IOException{
       String template="test";   
       abcViewBean punchOutCan = new abcViewBean();
       punchOutCan.setPunchOutCanonicalRes(template);
       //You can push the bean object into request via setAttribute
       //e.g
       //request.setAttribute("punchOutCan",punchOutCan);
}

还有JSP代码，

<jsp:include page="/PunchOutCanonicalServlet" flush="true"/>  
<c:out value="${punchOutCan.punchOutCanonicalRes}" />

这篇关于无法转发.响应已提交.错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！