Servlet--获取Session对象

Servlet--获取Session对象

一、获取Session对象

1、创建一个servlet类，实现获取session对象

package servlet08;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.servlet.http.HttpSession;public class SessionServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.setContentType("text/html;charset=UTF-8");PrintWriter out = response.getWriter();// 获取session对象HttpSession  session = request.getSession();System.out.println("-----session内存地址："+session+"<br/>");System.out.println("-----sessionID为："+session.getId());}}

2、web.xml配置信息

<?xml version="1.0" encoding="UTF-8"?><web-app version="3.0"    xmlns="http://java.sun.com/xml/ns/javaee"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">  <servlet>    <description>This is the description of my J2EE component</description>    <display-name>This is the display name of my J2EE component</display-name>    <servlet-name>SessionServlet</servlet-name>    <servlet-class>servlet08.SessionServlet</servlet-class>  </servlet>  <servlet-mapping>    <servlet-name>SessionServlet</servlet-name>    <url-pattern>/sessionservlet</url-pattern>  </servlet-mapping></web-app>

二、访问，获取Session地址和ID

1、在浏览器中输入请求地址 发送  http://127.0.0.1:8080/test08/sessionservlet

2、在myeclipse控制台可以看到，重复发送请求Session值都是相同的。