关于JAVA SESSION的小测试

package com.jeelearning.servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;



@WebServlet("/newSession")
public class NewSession extends HttpServlet {
    private static final long serialVersionUID = 1L;
    
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response) throws ServletException, IOException {
        response.setCharacterEncoding("utf-8");
        response.setHeader("Content-type", "text/html;charset=utf-8");
        PrintWriter out = response.getWriter();
        
        out.println("测试Session属性<br/><br/>");
        
        HttpSession session = request.getSession();
        if (session.isNew()) {
            out.println("新朋友<br/><br/>");
        } else {
            out.println("欢迎回来<br/><br/>");
        }
        
    }

}