Java Hibernate在尝试使用合并方法更新对象时引发DataIntegrityViolationException

以前的

update（）

方法抛出了

具有相同标识符值的不同对象，该对象已与会话关联，因此我将dao更改为。现在它给出了
org.springframework.dao.DataIntegrityViolationException:cannotexecute语句；SQL[n/a]；约束[null]；嵌套异常为org.hibernate.exception.ConstraintViolationException:无法执行语句

TeamDAOImpl

public void updateTeam(Team team) {
        Team teamToUpdate = getTeam(team.getId());
        teamToUpdate.setName(team.getName());
        teamToUpdate.setRating(team.getRating());
        Set<TeamMember> teamMember = team.getTeamMembers();
        teamToUpdate.setTeamMembers(teamMember);
        getCurrentSession().merge(teamToUpdate);
    }

错误o.h.e.jdbc.spi.SqlExceptionHelper-无法添加或更新子级
行：外键约束失败（
db
团队成员
，
约束
FK_成员\u id
外键（
id
）引用
Member
（
id
）删除时无操作更新时无操作）

数据：

CREATE TABLE `member` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(45) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `teams` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(45) NOT NULL,
  `rating` int(11) NOT NULL,
  `FK_Organization_id` int(11) NOT NULL,
  PRIMARY KEY (`id`),
  KEY `FK_Organization_id` (`FK_Organization_id`),
  CONSTRAINT `FK_Organization_id` FOREIGN KEY (`FK_Organization_id`) REFERENCES `organization` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
CREATE TABLE `team_member` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `FK_Member_id` int(11) NOT NULL,
  `FK_Team_id` int(11) NOT NULL,
  PRIMARY KEY (`id`),
  CONSTRAINT `FK_Member_id` FOREIGN KEY (`id`) REFERENCES `member` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `FK_Team_id` FOREIGN KEY (`id`) REFERENCES `teams` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8;


更新3

public Team getTeam(int id) {
        Team team = (Team) getCurrentSession().get(Team.class, id);
        return team;
    }

更新4
P6Spy帮助发现错误查询：

insert into team_member (FK_Team_id, FK_Member_id) values (2, 2);

返回：

[SQL] insert into team_member (FK_Team_id, FK_Member_id) values (2, 2);
[Err] 1452 - Cannot add or update a child row: a foreign key constraint fails (`db`.`team_member`, CONSTRAINT `FK_Member_id` FOREIGN KEY (`id`) REFERENCES `member` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION)

问题出现在
团队成员
表中的约束定义中。而不是：

CONSTRAINT `FK_Member_id` FOREIGN KEY (`id`) REFERENCES `member` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `FK_Team_id` FOREIGN KEY (`id`) REFERENCES `teams` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION

一定是这样

CONSTRAINT `FK_Member_id` FOREIGN KEY (`FK_Member_id`) REFERENCES `member` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `FK_Team_id` FOREIGN KEY (`FK_Team_id`) REFERENCES `teams` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION

这可能是级联的一个问题。为了进行测试，请尝试不设置团队成员，并尝试设置另一个字段（不使用cascade）以查看发生了什么。如果在
TeamDAOImpl
中未设置团队成员，则该字段可以正常工作（更新除团队成员以外的所有成员）。您可以发布在执行更新（）时提供的示例值吗或者合并..？所以您有
Team teamToUpdate=getTeam（Team.getId（））
，这基本上意味着
团队
和
团队更新
指向同一个团队，对吗？如果是，请尝试更改
Set teamMember=team.getTeamMembers（）
使用
teamToUpdate.getTeamMembers（）
teamToUpdate
是另一个从传递的
team
中拾取更改的对象。建议的更改后没有错误，也没有更新
CONSTRAINT `FK_Member_id` FOREIGN KEY (`FK_Member_id`) REFERENCES `member` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `FK_Team_id` FOREIGN KEY (`FK_Team_id`) REFERENCES `teams` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION