Question

我正在使用Mapster将Dto实例映射到Model对象。

Dtos由Javascript客户端发送，仅发送更新的属性。

我想忽略空值，并让Mapster为此属性保留模型实例。

更好地解释该场景的简化示例：

// My .Net Dto class, used for client/server communication.
public class PersonDto
{
  public string Id { get; set; }
  public string Name { get; set; }
  public string Family { get; set; }
}

// My Model class. Let's assume is the same data as per the Dto.
public class Person
{
  public string Id { get; set; }
  public string Name { get; set; }
  public string Family { get; set; }
}

public void Update()
{
  var existingPerson = new Person
  {
    Id = "A",
    Name = "Ned",
    Family = "Stark"
  };

  var patchDataSentFromClient = new PersonDto
  {
    Id = "A",
    Name = "Rob"
  };

  patchDataSentFromClient.Adapt(existingPerson);

  // Here existingPerson.Family should be "Stark", but it gets emptied out.
  // the mapping should be equivalent to:
  // if (patchDataSentFromClient.Family != null) existingPerson.Family = patchDataSentFromClient.Family;
}

编辑：重点是我不想写下我的Dtos中数以千计的每个属性的映射条件。我希望Mapster按名称自动执行所有字符串属性，但保持忽略空值的“类补丁”逻辑。

Answer 1

您可以使用IgnoreNullValues。

Mapster - 如何忽略null属性的映射

1 个答案: