Java持久性：无法添加或更新子行：外键约束失败

基本上，我正在实现一个PDS（个人数据表），所以我有一些表，比如客户（员工）、个人信息、其他信息

客户端表结构：

idClients, name, institute, username, password, usertype

idPersonalInfo, agencyno, bloodtype, status, citizenship, address, idClients

Personalinfo表结构：

idClients, name, institute, username, password, usertype

idPersonalInfo, agencyno, bloodtype, status, citizenship, address, idClients

我可以成功添加客户端，但当我尝试添加/更新personalinfo时，我会

MySQLIntegrityConstraintViolationException: Cannot add or update a child row: a foreign key constraint fails

在personalinfo类中，我还有一行：

 @JoinColumn(name = "idClients", referencedColumnName = "idClients", insertable = false, updatable = false)

在客户类别I中，还包括：

 @OneToOne(cascade = CascadeType.ALL, mappedBy = "clients")    
    private Personalinfo personalinfo;

但我不明白为什么我会违反约束

Error Code: 1452
Call: INSERT INTO personalinfo (...) VALUES (...)
    bind => [7parameters bound]
Query: InsertObjectQuery(com.profiling.database.Personalinfo[ idPersonalInfo=null ])

编辑：

编辑 客户端类：

@Entity
@Table(name = "clients")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "Clients.findAll", query = "SELECT c FROM Clients c"),
    @NamedQuery(name = "Clients.findByIdClients", query = "SELECT c FROM Clients c WHERE c.idClients = :idClients"),
    @NamedQuery(name = "Clients.findByFirstName", query = "SELECT c FROM Clients c WHERE c.firstName = :firstName"),
    @NamedQuery(name = "Clients.findByGender", query = "SELECT c FROM Clients c WHERE c.gender = :gender"),
    @NamedQuery(name = "Clients.findByLastName", query = "SELECT c FROM Clients c WHERE c.lastName = :lastName"),
    @NamedQuery(name = "Clients.findByMiddlename", query = "SELECT c FROM Clients c WHERE c.middlename = :middlename"),
    @NamedQuery(name = "Clients.findByNameExtension", query = "SELECT c FROM Clients c WHERE c.nameExtension = :nameExtension")})
public class Clients implements Serializable {

    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Basic(optional = false)
    @Column(name = "idClients")
    private Integer idClients;
    @Column(name = "FirstName")
    private String firstName;
    @Column(name = "Gender")
    private String gender;
    @Column(name = "LastName")
    private String lastName;
    @Column(name = "Middlename")
    private String middlename;
    @Column(name = "NameExtension")
    private String nameExtension;
    @Column(name = "Institute")
    private String institute;

    //value added
    @Column(name = "username")
    private String username;
    @Column(name = "password")
    private String password;
    @Column(name = "userType")
    private String userType;


    @OneToMany(mappedBy = "idClients")
    private List<Workexpe> workexpeList;

    @OneToMany(mappedBy = "idClients")
    private List<Ratingscore> ratingscoreList;

    @OneToOne(cascade = CascadeType.ALL, mappedBy = "clients")
    private Familyback familyback;

    @OneToMany(mappedBy = "idClients")
    private List<Civilservice> civilserviceList;

    @OneToMany(mappedBy = "idClients")
    private List<Staffscore> staffscoreList;

    @OneToMany(mappedBy = "idClients")
    private List<Referenceinfo> referenceinfoList;

    @OneToOne(cascade = CascadeType.ALL, mappedBy = "clients")    
    private Personalinfo personalinfo;

    @OneToOne(cascade = CascadeType.ALL, mappedBy = "clients")
//    @OneToOne(mappedBy = "idClients")
    private Otherinfo otherinfo;

    @OneToMany(mappedBy = "idClients")
    private List<Trainingprog> trainingprogList;
    @OneToMany(mappedBy = "idClients")
    private List<Children> childrenList;
    @OneToMany(mappedBy = "idClients")
    private List<Specialskills> specialskillsList;
    @OneToMany(mappedBy = "idClients")
    private List<Educback> educbackList;
    @OneToMany(mappedBy = "idClients")
    private List<Voluntarywork> voluntaryworkList;

    public Clients() {
    }

    public Clients(Integer idClients) {
        this.idClients = idClients;
    }

    public Integer getIdClients() {
        return idClients;
    }

    public void setIdClients(Integer idClients) {
        this.idClients = idClients;
    }

    public String getFirstName() {
        return firstName;
    }

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

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getLastName() {
        return lastName;
    }

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

    public String getMiddlename() {
        return middlename;
    }

    public void setMiddlename(String middlename) {
        this.middlename = middlename;
    }

    public String getNameExtension() {
        return nameExtension;
    }

    public void setNameExtension(String nameExtension) {
        this.nameExtension = nameExtension;
    }

    @XmlTransient
    public List<Workexpe> getWorkexpeList() {
        return workexpeList;
    }

    public void setWorkexpeList(List<Workexpe> workexpeList) {
        this.workexpeList = workexpeList;
    }

    @XmlTransient
    public List<Ratingscore> getRatingscoreList() {
        return ratingscoreList;
    }

    public void setRatingscoreList(List<Ratingscore> ratingscoreList) {
        this.ratingscoreList = ratingscoreList;
    }

    public Familyback getFamilyback() {
        return familyback;
    }

    public void setFamilyback(Familyback familyback) {
        this.familyback = familyback;
    }

    @XmlTransient
    public List<Civilservice> getCivilserviceList() {
        return civilserviceList;
    }

    public void setCivilserviceList(List<Civilservice> civilserviceList) {
        this.civilserviceList = civilserviceList;
    }

    @XmlTransient
    public List<Staffscore> getStaffscoreList() {
        return staffscoreList;
    }

    public void setStaffscoreList(List<Staffscore> staffscoreList) {
        this.staffscoreList = staffscoreList;
    }

    @XmlTransient
    public List<Referenceinfo> getReferenceinfoList() {
        return referenceinfoList;
    }

    public void setReferenceinfoList(List<Referenceinfo> referenceinfoList) {
        this.referenceinfoList = referenceinfoList;
    }

    public Personalinfo getPersonalinfo() {
        return personalinfo;
    }

    public void setPersonalinfo(Personalinfo personalinfo) {
        this.personalinfo = personalinfo;
    }

    public Otherinfo getOtherinfo() {
        return otherinfo;
    }

    public void setOtherinfo(Otherinfo otherinfo) {
        this.otherinfo = otherinfo;
    }

    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;
    }

    public String getUserType() {
        return userType;
    }

    public void setUserType(String userType) {
        this.userType = userType;
    }



    @XmlTransient
    public List<Trainingprog> getTrainingprogList() {
        return trainingprogList;
    }

    public void setTrainingprogList(List<Trainingprog> trainingprogList) {
        this.trainingprogList = trainingprogList;
    }

    @XmlTransient
    public List<Children> getChildrenList() {
        return childrenList;
    }

    public void setChildrenList(List<Children> childrenList) {
        this.childrenList = childrenList;
    }

    @XmlTransient
    public List<Specialskills> getSpecialskillsList() {
        return specialskillsList;
    }

    public void setSpecialskillsList(List<Specialskills> specialskillsList) {
        this.specialskillsList = specialskillsList;
    }

    @XmlTransient
    public List<Educback> getEducbackList() {
        return educbackList;
    }

    public void setEducbackList(List<Educback> educbackList) {
        this.educbackList = educbackList;
    }

    @XmlTransient
    public List<Voluntarywork> getVoluntaryworkList() {
        return voluntaryworkList;
    }

    public void setVoluntaryworkList(List<Voluntarywork> voluntaryworkList) {
        this.voluntaryworkList = voluntaryworkList;
    }

    @Override
    public int hashCode() {
        int hash = 0;
        hash += (idClients != null ? idClients.hashCode() : 0);
        return hash;
    }

    @Override
    public boolean equals(Object object) {
        // TODO: Warning - this method won't work in the case the id fields are not set
        if (!(object instanceof Clients)) {
            return false;
        }
        Clients other = (Clients) object;
        if ((this.idClients == null && other.idClients != null) || (this.idClients != null && !this.idClients.equals(other.idClients))) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return this.lastName + ", " + this.firstName;
    }

    public String getInstitute() {
        return institute;
    }

    public void setInstitute(String institute) {
        this.institute = institute;
    }

}

---

假设您在

PersonalInfo

类中尝试此功能并进行检查

@OneToOne 
@JoinColumn(name = "idClients")
private Clients clients;

---

问题在于插入，但您应该向我们展示进行插入的代码，甚至SQL本身。您尝试插入的行很可能违反了外键约束。它的父类是否存在？请发布personalinfo和client类。映射中似乎有问题。@Tim是的，我先保存客户端，然后尝试插入个人信息。尝试过，但我得到了以下错误：只有一个可以定义为可写，所有其他的都必须指定为只读。是否可以共享异常或stacktrace。异常[EclipseLink-48]（Eclipse持久性服务-2.5.2.v20140319-9ad6abd）：org.Eclipse.Persistence.exceptions.DescriptorException异常描述：字段[personalinfo.IdClients]存在多个可写映射。只有一个映射可以定义为可写，其他所有映射必须指定为只读。