在之前的测试中，我看到虽然它能够毫无问题地删除，但现在它不能工作。

这是我的实体类：

@Getter
@Setter
@NoArgsConstructor
@AllArgsConstructor
@Entity
@Table(name="subcomments")
public class SubComment {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    public long id;
    @Column(name="uid")
    public String uid;
    @Column (name="name")
    public String name;
    @Column (name="above_uid")
    public String above_uid;
    @Column (name="url")
    public String url;
    @Column(name="coin")
    public String coin;
    @Column (name="comment")
    public String comment;
    @Column (name="top_date")
    public int top_date;
    @Column (name="top_time")
    public int top_time;
}

这是我的JPA存储库：

public interface SubCommentRepo extends JpaRepository<SubComment , Long>{
    // All CRUD database methods
    @Query( value="Select * from subcomments where uid=:uid and above_uid=:above_uid and coin=:coin and comment=:comment and top_date=:top_date and top_time=:top_time" , nativeQuery=true )
    public SubComment info(String uid, String above_uid, String coin, String comment,int top_date, int top_time);
}

存储库中的INFO方法用于检查数据库中是否存在当前数据。

这是我的REST控制器：

@RestController
@RequestMapping(path="/api/v1/user")
public class ServiceController {
    @Autowired 
    SubCommentRepo subRepo ;
    // Delete Sub Comment***
    @DeleteMapping(path="/comment/sub/delete")
    public ResponseEntity<String> delete( @RequestBody SubComment smt ) {
        if ( subRepo.info(smt.uid, smt.above_uid, smt.coin, smt.comment, smt.top_date, smt.top_time)!= null ) {
            subRepo.delete(smt);
            return ResponseEntity.status( HttpStatus.OK ).body ( "Deleted" );
        } else {
            return ResponseEntity.status( HttpStatus.BAD_REQUEST ).body( "Not available already" );
        }
    }
}

我正在使用MySQL作为数据库。

我是第一次试穿春靴。：)