Javaweb項目中從servlet跳轉到jsp頁面出現亂碼

在建立的servlet中要按照如下順序：

  public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

 request.setCharacterEncoding("UTF-8");

       response.setCharacterEncoding("UTF-8");

                                                  //一定是先設定字元再寫PrintWriter，不然跳轉到jsp頁面會亂碼

     response.setContentType("text/html");

     PrintWriter out = response.getWriter();

 }