为什么我在调用 Graph API 时会收到 NotSupportedException？

Question

使用如下调用调用 Microsoft Graph API 后：

var driveItem = await _graphApiClient.Sites[SiteId].Drives[DriveId].Root.ItemWithPath(path)
    .Request().GetAsync();

我得到：

System.NotSupportedException: Serialization and deserialization of 'System.Action' instances are not supported. Path: $.MoveNextAction.
 ---> System.NotSupportedException: Serialization and deserialization of 'System.Action' instances are not supported.
   at System.Text.Json.Serialization.Converters.UnsupportedTypeConverter`1.Write(Utf8JsonWriter writer, T value, JsonSerializerOptions options)
   at System.Text.Json.Serialization.JsonConverter`1.TryWrite(Utf8JsonWriter writer, T& value, JsonSerializerOptions options, WriteStack& state)
   at ...

Answer 1

检查您是否使用等待或异步处理程序调用您的方法。

我的例子：

前

return Ok(graphManager.GraphMethod(request));

后

return Ok(graphManager.GraphMethod(request).Result);