我遇到了同样的问题，发现有必要在方法参数之前使用[FromBody]属性.在这种情况下，它可以解析请求有效负载，并且您可以访问方法

I've got the same issue and found that it is necessary to use [FromBody] attribute before your method params. In this case it can parse request payload and you can reach your methods

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