直接偷懒使用阿里云的示例
大致方法总结如下:
引入基础库看示例中
model类的声明:

1. 先声明属性
2.初始化方法
3.在声明set/get方法
注意点: 在get方法中有注解符的修饰. 什么约定大于配置, 注意一下变量的大小写和方法中的大小写问题

package com.aliyun.cloudcallcenter.crm.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.persistence.Transient;

import com.aliyun.cloudcallcenter.crm.aliyun.TokenPackage;


@Entity
@Table(name = "user")
public class User {
    /**
     * 用户ID
     */
    private Long id;

    /**
     * 用户名
     */
    private String userName;

    /**
     * 用户密码，明文
     */
    private String password;

    /**
     * 阿里云账户绑定标志
     */
    private Boolean isAliyunBound;

    /**
     * 阿里云账户访问令牌
     */
    private TokenPackage tokePackage;

  
    public User() {
    }

    public User(String userName, String password) {
        this.userName = userName;
        this.password = password;
    }

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    @Column(unique = true)
    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Transient
    public Boolean isAliyunBound() {
        return isAliyunBound;
    }

    public void setAliyunBound(Boolean aliyunBound) {
        isAliyunBound = aliyunBound;
    }

 
    @Transient
    public TokenPackage getTokePackage() {
        return tokePackage;
    }

    public void setTokePackage(TokenPackage tokePackage) {
        this.tokePackage = tokePackage;
    }

}

@Transient的解释

总结一句话就是被@Transient修饰的变量将不会被自动序列化到磁盘中,被修饰的变量的生命周期仅限在内存中