Question

在Swagger中测试我的应用程序并尝试将一个条目发布到MySQL数据库时，我不断收到错误消息：java.sql.SQLIntegrityConstraintViolationException: Duplicate entry '0' for key 'PRIMARY'. 检查我的堆栈跟踪时，在应用程序抛出错误消息之前，我可以看到以下行：

2017-09-12 12:55:11.394  INFO 642 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 28 ms
Hibernate: insert into addresses (house_number, street_name, town_name, zip_code, address_id) values (?, ?, ?, ?, ?)
2017-09-12 12:55:16.562  WARN 642 --- [nio-8080-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 1062, SQLState: 23000
2017-09-12 12:55:16.562 ERROR 642 --- [nio-8080-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper   : Duplicate entry '0' for key 'PRIMARY'
2017-09-12 12:55:16.563  INFO 642 --- [nio-8080-exec-4] o.h.e.j.b.internal.AbstractBatchImpl     : HHH000010: On release of batch it still contained JDBC statements

我的条目映射似乎有问题。我的条目Counterparty包含一个条目地址（一对一关系）

@Entity
@Table(name = "counterparties")
public class Counterparty implements Serializable {

  @Id
  @Column(name = "counterparty_id")
  @GeneratedValue(strategy = GenerationType.IDENTITY)
  private int id;
  private int nip;
  private String companyName;
  private String phoneNumber;
  private String bankName;
  private String bankNumber;
  @OneToOne(cascade = {CascadeType.PERSIST,
      CascadeType.MERGE,
      CascadeType.DETACH, CascadeType.REFRESH})
  @JoinColumn(name = "address_id", referencedColumnName="address_id")
  private Address address;
  @OneToMany(mappedBy = "counterparty", fetch = FetchType.LAZY, cascade = {CascadeType.PERSIST,
      CascadeType.MERGE,
      CascadeType.DETACH, CascadeType.REFRESH})
  @JsonIgnore
  private List<Invoice> invoices;


@Entity
@Table(name = "addresses")
public class Address implements Serializable {

  @Id
  @Column(name = "address_id")
  private int id;
  private String zipCode;
  private String townName;
  private String streetName;
  private String houseNumber;

  @OneToOne(mappedBy = "address", cascade = {CascadeType.PERSIST,
      CascadeType.MERGE,
      CascadeType.DETACH, CascadeType.REFRESH})
  @JsonIgnore
  private Counterparty counterparty;

这两个条目都是我的发票条目的一部分。也许我在从一张桌子转到另一张桌子时犯了错误？

Answer 1

我认为问题在于AutoGeneration ...您是否手动创建了TABLE或者您是否允许Hibernate为您执行此操作...
如果您手动创建了数据库表，则必须忘记自动增加ID。
1.尝试将AutoGeneration添加到地址表上的ID ...

@Id
@Column(name = "address_id")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;

如果您手动创建了表格，请尝试

ALTER TABLE table_name MODIFY column_name INTEGER NOT NULL AUTO_INCREMENT;

Answer 2

我也遇到过类似的情况，解决了spring批量重复输入的问题。您可以找到解决方案 here

java.sql.SQLIntegrityConstraintViolationException：重复条目＆＃39; 0＆＃39; 0关键＆＃39; PRIMARY＆＃39;

2 个答案: