Spring Data JPA crudrepository 保存方法是否有任何 return 值？如果是这样，它 returns 是什么？
Does Spring Data JPA crudrepository save method have any return value? If so what does it returns?
public void registerCustomer(Customer cust)
{
customerRepo.save(cust);
}
我怎么知道我的数据在上面的代码中插入成功了？
这里来自 CrudReporsitory.save() javadoc:
Saves a given entity. Use the returned instance for further operations as the save operation might have changed the entity instance completely.
好像是保存方法returns保存的实体实例。
public void registerCustomer(Customer cust)
{
customerRepo.save(cust);
}
我怎么知道我的数据在上面的代码中插入成功了？
这里来自 CrudReporsitory.save() javadoc:
Saves a given entity. Use the returned instance for further operations as the save operation might have changed the entity instance completely.
好像是保存方法returns保存的实体实例。