GetGetJsonAsyncT 方法

public static Task<T> GetJsonAsync<T>(
	IServiceProvider serviceProvider,
	string url,
	Encoding encoding = null,
	Action<string, string> afterReturnText = null
)

Public Shared Function GetJsonAsync(Of T) ( 
	serviceProvider As IServiceProvider,
	url As String,
	Optional encoding As Encoding = Nothing,
	Optional afterReturnText As Action(Of String, String) = Nothing
) As Task(Of T)