Question

我有这个servlet：

public class SaveImage extends HttpServlet {

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        PrintWriter out = null;
        try {
            out = response.getWriter();
            out.println("<html>");
            ...

            // I want to include here the content of this jsp:
            // /WEB-INF/mybox.jsp
            // (also, with the full context of the servlet)

            ...
            out.println("</html>");
            out.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

是否有问题（响应已经提交？），我该怎么做？

Answer 1

request.getRequestDispatcher("/WEB-INF/my.jsp").include(request, response);

但是你不应该像这样输出html的servlet。只需使用带有<jsp:include />或<%@ include file=".." %>

的jsp即可

Answer 2

感谢ozho，您已帮助我为2岁的待定项目做出最终决定。谢谢。实际上要将tomcat的请求从sun web server 7重定向到应用服务器，因为jsps没有直接在tomcat中显示，技术是在app.config中使用passthrough并让tomcat处理请求。

            import java.io.IOException;

            import javax.servlet.RequestDispatcher;
            import javax.servlet.ServletContext;
            import javax.servlet.ServletException;
            import javax.servlet.http.HttpServlet;
            import javax.servlet.http.HttpServletRequest;
            import javax.servlet.http.HttpServletResponse;

            /**
             * Servlet implementation class MY... Parvez Ahmad Hakim
             */
            public class MY extends HttpServlet {
                private static final long serialVersionUID = 1L;

                /**
                 * @see HttpServlet#HttpServlet()
                 */
                public MY() {
                super();
                // TODO Auto-generated constructor stub
                }

                /**
                 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
                 */
                protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {    


                    String pageName =request.getParameter("req");       
                    if(pageName==null){ 
                        pageName="IC_LIC_Login.jsp";// default page
                    }
                    request.getRequestDispatcher(pageName).include(request, response);



                }

                /**
                 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
                 */

                protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {      
                    String pageName =request.getParameter("req");       

                    request.getRequestDispatcher(pageName).include(request, response);
                }


            }

在servlet中包含jsp的内容

2 个答案: