实体关联更新的Spring数据REST事件

Question

当创建新的实体关联时，是否有任何spring data rest事件处理程序可用？即。置入关联资源URL。

public class Group{
  @ManyToMany
  @JoinTable(name = "user_groups",
           joinColumns = @JoinColumn(name = "group_id"),
           inverseJoinColumns = @JoinColumn(name = "user_id")
  )
  private List<User> users;
}

{"_links":
  {"users": 
    {"href" : "http://localhost:8084/users/1"} 
  }
}

@HandleAfterLinkSave
public void handleGroupUpdate(Group g, User u){
    log.debug("User "+u.getUsername() +"added to group "+g.getName());
}

@HandleAfterLinkSave
public void handleGroupUpdateGen(Object g, Object u){
    log.debug("User "+u.toString() +"added to group "+g.toString());
}

关联资源:http://docs.spring.io/spring-data/rest/docs/2.3.0.release/reference/html/#repository-resources.Association-resource

Answer 1

text/uri-list的正确参数为

public void handleGroupUpdate(Group g, List<User> u)

这与Group类中的users字段定义对齐。