1.步骤

1. 设置状态码
2. 设置响应头

2.代码

访问responseDemo1会自动跳转到responseDemo2
1.设置状态码为302
2.设置响应头location为/day15/responseDemo2

@WebServlet("/responseDemo1")
public class ResponseDemo1 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//访问responseDemo1会自动跳转到responseDemo2//1.设置状态码为302resp.setStatus(302);//2.设置响应头resp.setHeader("location","/day15/responseDemo2");}
}

3.简便代码（重点）

@WebServlet("/responseDemo1")
public class ResponseDemo1 extends HttpServlet {@Overrideprotected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {//简便的重定向方法resp.sendRedirect("/day15/responseDemo2");}

解析：利用Response对象的sendRedirect方法，将两步改为一步，更加简便。