Simple to use session

package com.yaaooo.sessionLearn;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/session")
public class SessionLearn01 {

    private HttpSession session;
    private static final String USER_INFO = "user_info";

    //一般在登录的时候进行 保存session
    @RequestMapping("setSession")
    @ResponseBody
    public String setSession(HttpServletRequest request){
        session = request.getSession();
        User user = new User();
        user.setName("yao");
        user.setAddr("jilin");
        session.setAttribute(USER_INFO,user);
        return "success";
    }

    //可以在登录后 从session取出数据对用户进行操作,不需要填写特殊内容,默认为当前session用户
    //比如 可以直接取session数据中的名字, 查询数据库进行修改
    @RequestMapping("getSession")
    @ResponseBody
    public String getSession(HttpServletRequest request){
        session = request.getSession();
        User user = (User) session.getAttribute(USER_INFO);
        return user.toString();
    }

    //http://localhost:8080/session/getSession
    //http://localhost:8080/session/setSession

}

package com.yaaooo.sessionLearn;

public class User {

    private String name;
    private String addr;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAddr() {
        return addr;
    }

    public void setAddr(String addr) {
        this.addr = addr;
    }

    @Override
    public String toString() {
        return "User{" +
                "name='" + name + '\'' +
                ", addr='" + addr + '\'' +
                '}';
    }
}