实体映射中的重复列应映射为insert =“ false” update =“ false”

Question

我有一个pojo类Address，正在尝试建立一个数据库表，其中应该有不同的家庭住址和办公地址。 我正在使用AttributeOverride批注使地址类分别显示办公室地址和家庭住址的属性，但是出现以下问题。 线程“主”中的异常org.hibernate.MappingException：实体中的重复列：org.blogPost.Employee列：CITY_NAME（应映射为insert =“ false” update =“ false”）

请参见下面的代码，并为此提出正确的解决方案。

主类。

    package org.blogPost;
    import java.util.Date;

    import org.hibernate.Session;
    import org.hibernate.SessionFactory;
    import org.hibernate.cfg.AnnotationConfiguration;

    public class TestEmployee {

        public static void main(String[] args) {
            SessionFactory sessionfactory = new 
            AnnotationConfiguration().configure().buildSessionFactory();
            Session session = sessionfactory.openSession();
            session.beginTransaction();
            Date date= new Date();
            Employee emp1= new Employee();
            Address addr= new Address();
            Address home_addr= new Address();
            addr.setStreet("This is a test street");
            addr.setCity("test city");
            addr.setPincode("test Pin");
            home_addr.setStreet("Home Street Test");
            home_addr.setCity("Home test home");
            home_addr.setPincode("Test_home pin");
            //emp1.setEmpId(101);
            emp1.setEmpName("Employee five");
            emp1.setEmpLastName("Employee five SirName");
            emp1.setNumber(7755);
            emp1.setEmail("emp55@hibernate.com");
            emp1.setAddress(home_addr);
            emp1.setOfficeAddress(addr);
            emp1.setEmpLoginTime(date);
            session.save(emp1);
            session.getTransaction().commit();
            emp1= null;

            session=sessionfactory.openSession();
            session.beginTransaction();
            emp1=(Employee)session.get(Employee.class, 1);
            System.out.println("Below is the user details");
            System.out.println("Employee ID : "+emp1.getEmpId());
            System.out.println("Employee Name : "+emp1.getEmpName());
            System.out.println("Employee Address : "+emp1.getAddress());
            System.out.println("Employee email ID : "+emp1.getEmail());

        }
    }

我面临问题的员工班级。

 package org.blogPost; import java.util.Date; import javax.persistence.AttributeOverride; import javax.persistence.AttributeOverrides; import javax.persistence.Column; import javax.persistence.Embedded; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.Table; import javax.persistence.TableGenerator; import javax.persistence.Temporal; import javax.persistence.TemporalType; @Entity @Table(name="EmployeeInfo") public class Employee { private int empId; private String empName; private String empLastName; private long number; private String email; private Date empLoginTime; private Address address; @AttributeOverrides({ @AttributeOverride (name="street",column=@Column(name="HOME_STREET_ADDRESS")), @AttributeOverride (name="city",column=@Column(name="HOME_CITY_ADDRESS")), @AttributeOverride (name="pincode",column=@Column(name="HOME_PIN_CODE")) }) private Address officeAddress; @Id @GeneratedValue(strategy=GenerationType.TABLE,generator="empID") @TableGenerator(name="empID",table="empPrimaryKey",pkColumnName="empKey",pkColumnValue="empValue",allocationSize=1) @Column(name="EmployeeId",nullable=false) public int getEmpId() { return empId; } public void setEmpId(int empId) { this.empId = empId; } @Column(name="First_Name",nullable=false) public String getEmpName() { return empName; } public void setEmpName(String empName) { this.empName = empName; } @Column(name="Last_Name",nullable=false) public String getEmpLastName() { return empLastName; } public void setEmpLastName(String empLastName) { this.empLastName = empLastName; } @Column(name="Phone_number") public long getNumber() { return number; } public void setNumber(long number) { this.number = number; } @Column(name="Email_Address",nullable=false) public String getEmail() { return email; } public void setEmail(String email) { this.email = email; } @Temporal(TemporalType.TIMESTAMP) public Date getEmpLoginTime() { return empLoginTime; } public void setEmpLoginTime(Date empLoginTime) { this.empLoginTime = empLoginTime; } @Embedded public Address getAddress() { return address; } public void setAddress(Address address) { this.address = address; } @Embedded public Address getOfficeAddress() { return officeAddress; } public void setOfficeAddress(Address officeAddress) { this.officeAddress = officeAddress; } } 

地址类别。 包org.blogPost;

import javax.persistence.Column;
import javax.persistence.Embeddable;

@Embeddable
public class Address {

    private String street;
    private String city;
    private String pincode;

    @Column(name="STREET_NAME")
    public String getStreet() {
        return street;
    }
    public void setStreet(String street) {
        this.street = street;
    }
    @Column(name="CITY_NAME")
    public String getCity() {
        return city;
    }
    public void setCity(String city) {
        this.city = city;
    }
    @Column(name="PIN_CODE")
    public String getPincode() {
        return pincode;
    }
    public void setPincode(String pincode) {
        this.pincode = pincode;
    }

}

下面是运行代码时遇到的异常。

 Exception in thread "main" org.hibernate.MappingException: Repeated column in mapping for entity: org.blogPost.Employee column: CITY_NAME (should be mapped with insert="false" update="false") at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:670) at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:692) at org.hibernate.mapping.PersistentClass.checkPropertyColumnDuplication(PersistentClass.java:688) at org.hibernate.mapping.PersistentClass.checkColumnDuplication(PersistentClass.java:714) at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:468) at org.hibernate.mapping.RootClass.validate(RootClass.java:215) at org.hibernate.cfg.Configuration.validate(Configuration.java:1149) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1334) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867) at org.blogPost.TestEmployee.main(TestEmployee.java:12) 

Answer 1

请在getter方法（公共地址getOfficeAddress（））上保留@AttributeOverrides注释，就像您在其他成员变量（public int getEmpId（））的getter方法上使用注释一样。 它会工作。