package com.loaderman.demo;import javax.servlet.ServletException;
import javax.servlet.http.*;
import java.io.IOException;public class SaveServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//1.创建session对象
HttpSession session = request.getSession();
/**
* 得到session编号
*/
System.out.println("id="+session.getId());
/**
* 修改session的有效时间
*/
//session.setMaxInactiveInterval(20); /**
* 手动发送一个硬盘保存的cookie给浏览器
*/
Cookie c = new Cookie("JSESSIONID",session.getId());
c.setMaxAge(60*60);
response.addCookie(c);
//2.保存会话数据
session.setAttribute("name", "rose");
}}
package com.loaderman.demo;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;public class GetDemo extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//1.得到session对象
HttpSession session = request.getSession(false); if(session==null){
System.out.println("没有找到对应的sessino对象");
return;
} /**
* 得到session编号
*/
System.out.println("id="+session.getId()); //2.取出数据
String name = (String)session.getAttribute("name");
System.out.println("name="+name);
}}
运行,请求后,日志如下:
id=E6492321D1C1E6001E2B7DDCECE7106E
....
id=E6492321D1C1E6001E2B7DDCECE7106E
name=rose