在.NET Core项目和.NET Framework应用程序中运行时,下面的程序会生成不同的JSON。
码
class Program
{
internal static readonly MediaTypeFormatter DefaultFormatter = new JsonMediaTypeFormatter
{
UseDataContractJsonSerializer = false,
SerializerSettings =
{
NullValueHandling = NullValueHandling.Ignore,
DateTimeZoneHandling = DateTimeZoneHandling.Utc,
DateFormatHandling = DateFormatHandling.IsoDateFormat
}
};
private static DataTable BuildTestDataTable()
{
var testDataTable = new DataTable();
testDataTable.Columns.Add("Label", typeof(string));
testDataTable.Columns.Add("Metric", typeof(decimal));
testDataTable.Rows.Add("A", 10);
testDataTable.Rows.Add("B", 20);
return testDataTable;
}
static void Main(string[] args)
{
DataTable table = BuildTestDataTable();
ObjectContent oc = new ObjectContent(table.GetType(), table, DefaultFormatter);
Console.WriteLine(oc.ReadAsStringAsync().Result);
Console.ReadKey();
}
}
.Net框架:
[{"Label":"A","Metric":10.0},{"Label":"B","Metric":20.0}]
.Net核心:
{
"DataTable.RemotingVersion": {
"_Major": 2,
"_Minor": 0,
"_Build": -1,
"_Revision": -1
},
"XmlSchema": "<?xml version=\"1.0\" encoding=\"utf-16\"?>\r\n<xs:schema xmlns=\"\" xmlns:xs=\"http://www.w3.org/2001/XMLSchema\" xmlns:msdata=\"urn:schemas-microsoft-com:xml-msdata\">\r\n <xs:element name=\"Table1\">\r\n <xs:complexType>\r\n <xs:sequence>\r\n <xs:element name=\"Label\" type=\"xs:string\" msdata:targetNamespace=\"\" minOccurs=\"0\" />\r\n <xs:element name=\"Metric\" type=\"xs:decimal\" msdata:targetNamespace=\"\" minOccurs=\"0\" />\r\n </xs:sequence>\r\n </xs:complexType>\r\n </xs:element>\r\n <xs:element name=\"tmpDataSet\" msdata:IsDataSet=\"true\" msdata:MainDataTable=\"Table1\" msdata:UseCurrentLocale=\"true\">\r\n <xs:complexType>\r\n <xs:choice minOccurs=\"0\" maxOccurs=\"unbounded\" />\r\n </xs:complexType>\r\n </xs:element>\r\n</xs:schema>",
"XmlDiffGram": "<diffgr:diffgram xmlns:msdata=\"urn:schemas-microsoft-com:xml-msdata\" xmlns:diffgr=\"urn:schemas-microsoft-com:xml-diffgram-v1\">\r\n <tmpDataSet>\r\n <Table1 diffgr:id=\"Table11\" msdata:rowOrder=\"0\" diffgr:hasChanges=\"inserted\">\r\n <Label>A</Label>\r\n <Metric>10</Metric>\r\n </Table1>\r\n <Table1 diffgr:id=\"Table12\" msdata:rowOrder=\"1\" diffgr:hasChanges=\"inserted\">\r\n <Label>B</Label>\r\n <Metric>20</Metric>\r\n </Table1>\r\n </tmpDataSet>\r\n</diffgr:diffgram>"
}
有人能否说明原因,以及这是否是故意的差异?
根据https://github.com/JamesNK/Newtonsoft.Json/issues/1383
它在netstandard1.5中,但netstandard1.3是Json.NET支持的最高值。当最终添加netstandard2.0构建时,我将添加对它的支持。