**1.account表结构**  **2.t_user表结构**  **3.role表结构**  **4.Account实体** ~~~ public class Account { private Integer id; //主键 private Double money; //金额 private User user; //账户关联的用户，多对一 ~~~ **5.Role实体** ~~~ public class Role { private Integer id; // 主键 private String role_name; //角色名 private String role_desc; //角色描述 private List<User> users; //一个角色下可能有多个用户 ~~~ **6.User实体** ~~~ public class User { private Integer id; private String name; private String password; //一个用户有多个账户，比如微信，支付宝 private List<Account> accounts; //一个用户多个角色 private List<Role> roles; ~~~