package com.yyz.response;  import java.io.IOException;  import javax.servlet.ServletException;  import javax.servlet.http.HttpServlet;  import javax.servlet.http.HttpServletRequest;  import javax.servlet.http.HttpServletResponse;  public class ResponseDemo extends HttpServlet {     public void doGet(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {          response.setHeader("location", "/day06/register.html");          response.setStatus(302);          //上面两句代码等同于下面这句代码：          //response.sendRedirect("/day06/register.html");  }      public void doPost(HttpServletRequest request, HttpServletResponse response)              throws ServletException, IOException {             doGet(request,response);      }  }