Question

当我尝试与我的员工和地址实体进行双向一对一映射时，我正在使用hibernate版本5并收到以下错误。

线程“main”中的异常org.hibernate.AnnotationException：未知 mappedBy in：home.practice.Employee.addr，引用的属性unknown： home.practice.Address.employee at org.hibernate.cfg.OneToOneSecondPass.doSecondPass（OneToOneSecondPass.java:147）在 org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses（InFlightMetadataCollectorImpl.java:1659）在 org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses（InFlightMetadataCollectorImpl.java:1634）在 org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete（MetadataBuildingProcess.java:278）在 org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build（MetadataBuildingProcess.java:83）在 org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:418）在 org.hibernate.boot.internal.MetadataBuilderImpl.build（MetadataBuilderImpl.java:87）在 org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:692）在 org.hibernate.cfg.Configuration.buildSessionFactory（Configuration.java:724） at home.practice.mainClass.main（mainClass.java:24）

实体员工

package home.practice;


import java.io.Serializable;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;




    @Entity
    @Table(name="EMP")
    @SequenceGenerator(name="seq", sequenceName="TAB_CUSTOMER_SEQ", allocationSize=100)
    public class Employee implements Serializable{

    @Id
    @GeneratedValue(strategy=GenerationType.SEQUENCE,generator="seq")
    @Column(name="EMPNO",unique=true,nullable=false,length=6)
    private int empno;

    @Column(name="ENAME",unique=false,nullable=false,length=20)
    private String name;

    @OneToOne(mappedBy="employee",cascade={CascadeType.ALL})
    private Address addr;

    public Address getAddr() {
        return addr;
    }
    public void setAddr(Address addr) {
        this.addr = addr;
    }
    public int getEmpno() {
        return empno;
    }
    public void setEmpno(int empno) {
        this.empno = empno;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    }

地址实体

package home.practice;

import java.io.Serializable;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table;

import org.hibernate.annotations.GenericGenerator;
import org.hibernate.annotations.Parameter;
@Entity
@Table(name="ADDRESS")
public class Address implements Serializable{

@Column(name="address_line1")
private String line1;
@Column(name="address_line2")
private String line2;
@Column(name="zip")
private long zip;   

@OneToOne
@PrimaryKeyJoinColumn
private Employee employee;

@Id
@Column(name="EMPNO",unique=true,nullable=false,length=6)
@GeneratedValue( generator="gen")
@GenericGenerator(name="gen", strategy = "foreign",parameters={ @Parameter(name="property",value="employee")})
private int empno;



public Employee getEmployee() {
    return employee;
}
public void setEmployee(Employee employee) {
    this.employee = employee;
}
public int getEmpno() {
    return empno;
}
public void setEmpno(int empno) {
    this.empno = empno;
}
public int getAddressId() {
    return AddressId;
}
public void setAddressId(int addressId) {
    AddressId = addressId;
}
@Id
int AddressId;

public String getLine1() {
    return line1;
}
public void setLine1(String line1) {
    this.line1 = line1;
}
public String getLine2() {
    return line2;
}
public void setLine2(String line2) {
    this.line2 = line2;
}
public long getZip() {
    return zip;
}
public void setZip(long zip) {
    this.zip = zip;
}
}

有人可以看看这个并让我知道它是否是hibernate中的错误或者我的代码中缺少某些内容？我已经在其他线程中尝试了一些相同问题的解决方案，但无济于事。之前在hibernate中存在类似的错误，但在4.2版本中已修复。

Answer 1

解决了这个问题：

我错过了我的hibernate配置文件： <mapping class="home.practice.Address"/>

我之前定义过 <mapping class="home.practice.Employee"/>但不是地址类。

注释异常：hibernate中的未知mappedBy错误

1 个答案: