Java 如何使hibernate一次将实体数据保存到所有相关表中？

我在

团队

和

团队成员

之间使用额外的表

团队成员

建立了多对多关系。Hibernate只将数据保存到

成员

表忽略

团队成员

。如何让它工作

DAOImpl

public void addTeamMember(TeamMember teamMember) {
        getCurrentSession().save(teamMember);
    }

子实体

@Entity
@Table(name="member")
public class TeamMember {
@ManyToMany(fetch = FetchType.EAGER, mappedBy = "teamMembers", cascade = CascadeType.ALL)
    public Set<Team> getTeams() {
        return teams;
    }

    public void setTeams(Set<Team> teams) {
        this.teams = teams;
    }
}

@Entity
@Table(name="teams")
public class Team {

@ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinTable(name = "team_member", joinColumns =
    @JoinColumn(name = "FK_Team_id", referencedColumnName= "id"),
            inverseJoinColumns = @JoinColumn(name = "FK_Member_id", referencedColumnName = "id")
    )
    public Set<TeamMember> getTeamMembers() {
        return teamMembers;
    }

    public void setTeamMembers(Set<TeamMember> teamMembers) {
        this.teamMembers = teamMembers;
    }
}

@实体
@表（name=“member”）
公开课小组成员{
@ManyToMany（fetch=FetchType.EAGER，mappedBy=“teamMembers”，cascade=CascadeType.ALL）
公共集getTeams（）{
返回队；
}
公共队（集合队）{
这个。团队=团队；
}
}

母公司实体

@Entity
@Table(name="member")
public class TeamMember {
@ManyToMany(fetch = FetchType.EAGER, mappedBy = "teamMembers", cascade = CascadeType.ALL)
    public Set<Team> getTeams() {
        return teams;
    }

    public void setTeams(Set<Team> teams) {
        this.teams = teams;
    }
}

@Entity
@Table(name="teams")
public class Team {

@ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinTable(name = "team_member", joinColumns =
    @JoinColumn(name = "FK_Team_id", referencedColumnName= "id"),
            inverseJoinColumns = @JoinColumn(name = "FK_Member_id", referencedColumnName = "id")
    )
    public Set<TeamMember> getTeamMembers() {
        return teamMembers;
    }

    public void setTeamMembers(Set<TeamMember> teamMembers) {
        this.teamMembers = teamMembers;
    }
}

@实体
@表（name=“teams”）
公开课小组{
@ManyToMany（fetch=FetchType.EAGER，cascade=CascadeType.ALL）
@JoinTable（name=“团队成员”，JointColumns=
@JoinColumn（name=“FK\u Team\u id”，referencedColumnName=“id”），
inverseJoinColumns=@JoinColumn（name=“FK\u Member\u id”，referencedColumnName=“id”）
)
公共集getTeamMembers（）{
返回团队成员；
}
公共无效设置成员（设置团队成员）{
this.teamMembers=团队成员；
}
}

当您在TeamMember上编写mappedby时，您对JPA说团队将负责管理此关系。这意味着您必须手动将成员添加到团队列表中，才能对其进行排序（cascadeType all确保了这一点）