.NET Core: Json and XML

(. 1) Json
　　the WebAPI Json default format, if the need to change the default settings Json modifications ConfigureServices method of Startup:
services.AddMvc ()
　　.AddJsonOptions (Options => {options.SerializerSettings.ContractResolver new new DefaultContractResolver = ();})
　　.SetCompatibilityVersion (CompatibilityVersion.Version_2_1);

（2）Xml

　　XML data format compatible WebAPI configuration (while using json and xml), was added in the Startup method ConfigureServices:
services.AddMvc () AddXmlSerializerFormatters ();.

　　Acquiring data, Accept request header needs to be set to text / xml or application / xml
　　input data, to set the request header is Content-Type text / xml or application / xml