如果没有主键，则使用spring data jpa存储库

Question

package com.mf.acrs.model;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;

@Entity
@Table(name="mv_garage_master")
public class GarageMaster {

    @Column(name="GARAGE_CODE")
    private String garageCode;

    @Column(name="GARAGE_NAME")
    private String garageName;

    @Column(name="GARAGE_BRANCH")
    private String garageBranch; 


}

package com.mf.acrs.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.mf.acrs.model.GarageMaster;

@Repository
public interface GarageMasterRepository extends JpaRepository<GarageMaster,ID>{
}

我的问题是，在上面的接口中，ID应该有什么值…

Answer 1

因此，实体、JPA和Spring数据需要您具有ID，这是如何找到或更新实体的。

[更新]@丁丁如果garageCode根据你的评论是唯一的，你可以这样实现：

@Entity
@Table(name="mv_garage_master")
public class GarageMaster implements Serializable {
    @Id
    @Column(name="GARAGE_CODE")
    private String garageCode;

    @Column(name="GARAGE_NAME")
    private String garageName;

    @Column(name="GARAGE_BRANCH")
    private String garageBranch; 
}

和存储库：

@Repository
public interface GarageMasterRepository extends JpaRepository<GarageMaster,String>{
}