1 设置定时刷新的头
//设置定时刷新的头 response.setHeader("refresh", "5;url=http://www.baidu.com");
2重定向的实现
1 servlet1代码
package header; 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 Servlet1 extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { //没有响应 告知客户端去重定向到servlet2 //1、设置状态码302 //response.setStatus(302); //2、设置响应头Location //response.setHeader("Location", "/WEB14/servlet2"); //封装成一个重定向的方法sendRedirect(url) response.sendRedirect("/WEB14/servlet2"); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }
2 servlet2代码
package header; 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 Servlet2 extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.getWriter().write("hello haohao..."); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }
3 手动设置状态码
//手动设置http响应行中的状态码 response.setStatus(404);
4 设置响应头
package header; import java.io.IOException; import java.util.Date; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class HeaderServlet extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { Date date = new Date(); //设置响应头 response.addHeader("name", "zhangsan"); //response.addIntHeader("age", 28); //response.addDateHeader("birthday", date.getTime()); response.addHeader("name", "lisi"); response.setHeader("age", "28"); response.setHeader("age", "50"); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } }
5 适用js完成页面定时跳转
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> <script type="text/javascript"> window.onload = function(){ var time = 5; var secondEle = document.getElementById("second"); var timer = setInterval(function(){ secondEle.innerHTML = time; time--; if(time==0){ clearInterval(timer); location.href="http://www.baidu.com"; } },1000); } </script> </head> <body> 恭喜你，注册成功，<span style="color:red" id="second">5</span>秒钟后跳转，如不跳转点击<a href="http://www.baidu.com">这里</a>! </body> </html>
