Hibernate 休眠单向多对多关系

我有两个类：

User

和

UserProfile

用户类别：

public class User implements Serializable{

@Id @GeneratedValue//(strategy=GenerationType.IDENTITY)
private Integer id;

@NotEmpty
@Column(name="SSO_ID", unique=true, nullable=false)
private String ssoId;

@NotEmpty
@Column(name="PASSWORD", nullable=false)
private String password;

@NotEmpty
@Column(name="FIRST_NAME", nullable=false)
private String firstName;

@NotEmpty
@Column(name="LAST_NAME", nullable=false)
private String lastName;

@NotEmpty
@Column(name="EMAIL", nullable=false)
private String email;

@NotEmpty
@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(name = "APP_USER_USER_PROFILE",
         joinColumns = { @JoinColumn(name = "USER_ID") },
         inverseJoinColumns = { @JoinColumn(name = "USER_PROFILE_ID") })
private Set<UserProfile> userProfiles = new HashSet<UserProfile>();

@OneToMany(mappedBy = "sem_creator_id", cascade = CascadeType.ALL)
private Set<Seminar> seminarsTeacher = new HashSet<>();

@OneToMany(mappedBy = "storage_creator_id", cascade = CascadeType.ALL)
private Set<FTPStorage> storageFiles = new HashSet<>();

public Integer getId() {
    return id;
}

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

public String getSsoId() {
    return ssoId;
}

public void setSsoId(String ssoId) {
    this.ssoId = ssoId;
}

public String getPassword() {
    return password;
}

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

public String getFirstName() {
    return firstName;
}

public void setFirstName(String firstName) {
    this.firstName = firstName;
}

public String getLastName() {
    return lastName;
}

public void setLastName(String lastName) {
    this.lastName = lastName;
}

public String getEmail() {
    return email;
}

public void setEmail(String email) {
    this.email = email;
}

public Set<UserProfile> getUserProfiles() {
    return userProfiles;
}

public void setUserProfiles(Set<UserProfile> userProfiles) {
    this.userProfiles = userProfiles;
}

@Override
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((id == null) ? 0 : id.hashCode());
    result = prime * result + ((ssoId == null) ? 0 : ssoId.hashCode());
    return result;
}

@Override
public boolean equals(Object obj) {
    if (this == obj)
        return true;
    if (obj == null)
        return false;
    if (!(obj instanceof User))
        return false;
    User other = (User) obj;
    if (id == null) {
        if (other.id != null)
            return false;
    } else if (!id.equals(other.id))
        return false;
    if (ssoId == null) {
        if (other.ssoId != null)
            return false;
    } else if (!ssoId.equals(other.ssoId))
        return false;
    return true;
}

@Override
public String toString() {
    return "User [id=" + id + ", ssoId=" + ssoId + ", firstName=" + firstName + ", lastName=" + lastName
            + ", email=" + email + "]";
}

public Set<Seminar> getSeminarsTeacher() {
    return seminarsTeacher;
}

public void setSeminarsTeacher(Set<Seminar> seminarsTeacher) {
    this.seminarsTeacher = seminarsTeacher;
}

public Set<FTPStorage> getStorageFiles() {
    return storageFiles;
}

public void setStorageFiles(Set<FTPStorage> storageFiles) {
    this.storageFiles = storageFiles;
}

当我使用这段代码时，我在UserProfile表中得到了具有多对多关系的重复实体。我使用

persist（）

函数保存对象。我做错了什么

然后我删除了cascadeType，得到一个错误：对象引用了一个未保存的瞬态实例-在刷新之前保存该瞬态实例

休眠日志：

Hibernate: 
insert 
into
    APP_USER
    (EMAIL, FIRST_NAME, LAST_NAME, PASSWORD, SSO_ID) 
values
    (?, ?, ?, ?, ?)

Hibernate: 
insert 
into
    APP_USER_USER_PROFILE
    (USER_ID, USER_PROFILE_ID) 
values
    (?, ?)

---

将此添加到您的

标准中

代码

   return session.createCriteria(User.class)
  .setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY)  
  .list();

当您使用条件获取时。这将删除重复的行

---

希望，这将有助于将此添加到您的

标准中

   return session.createCriteria(User.class)
  .setResultTransformer(Criteria.DISTINCT_ROOT_ENTITY)  
  .list();

当您使用条件获取时。这将删除重复的行

希望，这将有助于Hibernate在用户配置文件表中创建重复的行，但此表只有唯一的行，因此我得到了错误。确定这到底是什么意思：私有字符串类型=UserProfileType.User.getUserProfileType（）；Hibernate在用户配置文件表中创建重复的行，但此表只有唯一的行，我得到了错误。确定这到底是什么意思：私有字符串类型=UserProfileType.User.getUserProfileType（）；