我有2个实体：用户和角色与JoinTable user_role链接
@Entity
@Table(name = "core_users")
public class User implements Serializable {
public User(long id, String name, String password, Calendar passwordExpiresOn, Role group, String firstName, String lastName, String email, Calendar createdOn, Calendar lastLogin, Calendar enabledFrom, Calendar enabledTo, Locale language, String tag_badge, List<Menu> menuList, Long phoneNumber) {
super();
this.id = id;
this.name = name;
this.password = password;
this.passwordExpiresOn = passwordExpiresOn;
this.role = group;
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
this.createdOn = createdOn;
this.lastLogin = lastLogin;
this.enabledFrom = enabledFrom;
this.enabledTo = enabledTo;
this.language = language;
this.phoneNumber = phoneNumber;
}
public User() {
super();
}
private static final long serialVersionUID = -1611122599430240308L;
@Id
@GeneratedValue(strategy = GenerationType.TABLE, generator = "core_contatori")
@TableGenerator(table = "core_contatori", valueColumnName = "valore_numerico", name = "core_contatori", initialValue = 0, pkColumnName = "id_contatore", pkColumnValue = "UG")
@Column(name = "id")
@Expose
private long id;
@Column(name = "username", unique = true)
@Expose
private String name;
@Column(name = "user_password")
@Expose
private String password;
@Column(name = "user_password_expire_date")
@Temporal(TemporalType.DATE)
@Expose
private Calendar passwordExpiresOn;
@OneToOne(optional = false, orphanRemoval = true)
@Cascade(CascadeType.SAVE_UPDATE)
@JoinTable(name = "core_user_roles", joinColumns = { @JoinColumn(name = "user_id", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "role_id", referencedColumnName = "id") })
@Expose
private Role role;
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((createdOn == null) ? 0 : createdOn.hashCode());
result = prime * result + ((email == null) ? 0 : email.hashCode());
result = prime * result + ((enabledFrom == null) ? 0 : enabledFrom.hashCode());
result = prime * result + ((enabledTo == null) ? 0 : enabledTo.hashCode());
result = prime * result + ((firstName == null) ? 0 : firstName.hashCode());
result = prime * result + (int) (id ^ (id >>> 32));
result = prime * result + ((language == null) ? 0 : language.hashCode());
result = prime * result + ((lastLogin == null) ? 0 : lastLogin.hashCode());
result = prime * result + ((lastName == null) ? 0 : lastName.hashCode());
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((password == null) ? 0 : password.hashCode());
result = prime * result + ((passwordExpiresOn == null) ? 0 : passwordExpiresOn.hashCode());
result = prime * result + ((phoneNumber == null) ? 0 : phoneNumber.hashCode());
result = prime * result + ((role == null) ? 0 : role.hashCode());
return result;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
User other = (User) obj;
if (createdOn == null) {
if (other.createdOn != null)
return false;
} else if (!createdOn.equals(other.createdOn))
return false;
if (email == null) {
if (other.email != null)
return false;
} else if (!email.equals(other.email))
return false;
if (enabledFrom == null) {
if (other.enabledFrom != null)
return false;
} else if (!enabledFrom.equals(other.enabledFrom))
return false;
if (enabledTo == null) {
if (other.enabledTo != null)
return false;
} else if (!enabledTo.equals(other.enabledTo))
return false;
if (firstName == null) {
if (other.firstName != null)
return false;
} else if (!firstName.equals(other.firstName))
return false;
if (id != other.id)
return false;
if (language == null) {
if (other.language != null)
return false;
} else if (!language.equals(other.language))
return false;
if (lastLogin == null) {
if (other.lastLogin != null)
return false;
} else if (!lastLogin.equals(other.lastLogin))
return false;
if (lastName == null) {
if (other.lastName != null)
return false;
} else if (!lastName.equals(other.lastName))
return false;
if (name == null) {
if (other.name != null)
return false;
} else if (!name.equals(other.name))
return false;
if (password == null) {
if (other.password != null)
return false;
} else if (!password.equals(other.password))
return false;
if (passwordExpiresOn == null) {
if (other.passwordExpiresOn != null)
return false;
} else if (!passwordExpiresOn.equals(other.passwordExpiresOn))
return false;
if (phoneNumber == null) {
if (other.phoneNumber != null)
return false;
} else if (!phoneNumber.equals(other.phoneNumber))
return false;
if (role == null) {
if (other.role != null)
return false;
} else if (!role.equals(other.role))
return false;
return true;
}
第二个：
@Entity
@Table(name = "core_roles")
public class Role implements Serializable {
private static final long serialVersionUID = 1L;
@Id
@GeneratedValue(strategy = GenerationType.TABLE, generator = "core_contatori")
@TableGenerator(table = "core_contatori", valueColumnName = "valore_numerico", name = "core_contatori", initialValue = 0, pkColumnName = "id_contatore", pkColumnValue = "CG")
@Column(name = "id")
@Expose
private long id;
@Expose
@Column(name = "role_name")
private String name;
@Expose
@Column(name = "role_enabled")
private boolean enabled;
@OneToMany
@Cascade(org.hibernate.annotations.CascadeType.REMOVE)
@JoinTable(name = "core_user_roles", joinColumns = { @JoinColumn(name = "role_id", referencedColumnName = "id") }, inverseJoinColumns = { @JoinColumn(name = "user_id", referencedColumnName = "id") })
private Set<User> userList;
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + (enabled ? 1231 : 1237);
result = prime * result + (int) (id ^ (id >>> 32));
result = prime * result + ((menuList == null) ? 0 : menuList.hashCode());
result = prime * result + ((name == null) ? 0 : name.hashCode());
result = prime * result + ((userList == null) ? 0 : userList.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
Role other = (Role) obj;
if (id != other.id)
return false;
return true;
}
在更新（用户）时，hibernate始终创建一个新角色，而不是更新现有角色。 我也试着在没有JoinTable的情况下使用JoinColumn获得相同的结果。
使用HASHCODE和EQUALS进行更新