## 所用类 ~~~ package com.like.dao; import com.like.domain.Account; import java.util.List; public interface IAccountDao { List<Account> findAll(); } ~~~ ~~~ package com.like.dao; import com.like.domain.User; import java.util.List; public interface IUserDao { List<User> findUserAccount(); } ~~~ ~~~ package com.like.domain; import java.io.Serializable; public class Account implements Serializable { private Integer id; private Integer uid; private Double money; private User user; @Override public String toString() { return "Account{" + "id=" + id + ", uid=" + uid + ", money=" + money + ", user=" + user + '}'; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getUid() { return uid; } public void setUid(Integer uid) { this.uid = uid; } public Double getMoney() { return money; } public void setMoney(Double money) { this.money = money; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } } ~~~ ~~~ package com.like.domain; import java.io.Serializable; import java.util.Date; import java.util.List; public class User implements Serializable { private Integer id; private String username; private Date birthday; private String sex; private String address; //主表实体包含从表实体的集合引用 private List<Account> accounts; @Override public String toString() { return "User{" + "id=" + id + ", username='" + username + '\'' + ", birthday=" + birthday + ", sex='" + sex + '\'' + ", address='" + address + '\'' + ", accounts=" + accounts + '}'; } public List<Account> getAccounts() { return accounts; } public void setAccounts(List<Account> accounts) { this.accounts = accounts; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } } ~~~ ~~~ package com.like.domain; public class AccountUser extends Account { private String username; private String address; @Override public String toString() { return super.toString() + " AccountUser{" + "username='" + username + '\'' + ", address='" + address + '\'' + '}'; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } } ~~~