【Java】【web】实现自动刷新和重定向

实现自动刷新和重定向

// 自动刷新
public class Demo1 extends HttpServlet {
    
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setHeader("content-type", "text/html;charset=utf-8");
        response.getWriter().write("注册成功，3秒钟后自动跳转！");
        response.setHeader("refresh", "3;url=http://www.baidu.com");
    }
    
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doGet(request, response);
    }

}

// 重定向
public class Demo1 extends HttpServlet {

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // 方法1
        response.setStatus(302);// 告诉客户端，重定向
        response.setHeader("location", "/JDemo/demo2");// 告诉客户端，重定向的位置
        
        // 方法2
        response.sendRedirect("/JDemo/demo2");
    }
    
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        this.doGet(request, response);
    }

}