将 WCF 4 中的默认 JSON 序列化程序替换为 JSON.NET [英] Replace default JSON serializer in WCF 4 to JSON.NET
问题描述
我想用 JSON.NET 替换默认的 WCF JSON(适用于所有数据类型)序列化.我搜索了整个网络,但找不到可行的解决方案.
I want to replace the default WCF JSON (for all data types) serialization with JSON.NET. I've searched all over the net and couldn't find a working solution.
这是我的对象:
[JsonObject]
public class TestObject
{
[JsonProperty("JsonNetName")]
public string Name = "John";
[JsonProperty]
public DateTime Date = DateTime.Now;
}
这是我的 WCF 函数:
This is my WCF function:
[OperationContract]
[WebGet(BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Json)]
List<TestObject> Get();
这是 Global.asax 中的代码:
This is the code in Global.asax:
protected void Application_Start(object sender, EventArgs e)
{
// Create Json.Net formatter serializing DateTime using the ISO 8601 format
var serializerSettings = new JsonSerializerSettings();
serializerSettings.Converters.Add(new IsoDateTimeConverter());
serializerSettings.Converters.Add(new BinaryConverter());
serializerSettings.Converters.Add(new JavaScriptDateTimeConverter());
serializerSettings.Converters.Add(new BinaryConverter());
serializerSettings.Converters.Add(new StringEnumConverter());
var config = HttpHostConfiguration.Create().Configuration;
Microsoft.ApplicationServer.Http.JsonMediaTypeFormatter jsonFormatter = config.OperationHandlerFactory.Formatters.JsonFormatter;
config.OperationHandlerFactory.Formatters.Remove(jsonFormatter);
config.OperationHandlerFactory.Formatters.Insert(0, new JsonNetMediaTypeFormatter(serializerSettings));
var httpServiceFactory = new HttpServiceHostFactory
{
OperationHandlerFactory = config.OperationHandlerFactory,
MessageHandlerFactory = config.MessageHandlerFactory
};
//Routing
RouteTable.Routes.Add(
new ServiceRoute(
"Brands", httpServiceFactory,
typeof(Brands)));
}
这是 Web.Config:
This is Web.Config:
<endpointBehaviors>
<behavior name="Behavior_Brands">
<webHttp defaultOutgoingResponseFormat="Json" defaultBodyStyle="Bare" />
</behavior>
</endpointBehaviors>
和服务部分:
<service name="TestApp.CoreWCF.Brands">
<endpoint address="" behaviorConfiguration="Behavior_Brands" binding="webHttpBinding" contract="TestApp.CoreWCF.IBrands">
<identity>
<dns value="localhost" />
</identity>
</endpoint>
</service>
最后,这是我在启动 URL 时得到的:
And finally, this is what I'm getting when launching the URL:
"http://localhost:30000/Brands/Get"
[{"Date":"/Date(1354364412708+0200)/","Name":"John"}, {"Date":"/Date(1354364412708+0200)/","Name":"John"}]
JSON 答案显然忽略了 JSON.NET 属性.
The JSON answer obviously ignores the JSON.NET attributes.
推荐答案
总之,我想出了一个方法来使用不同的序列化器,手动的,似乎它更有效更快,因为它不通过微软的序列化器,虽然代码明智的做法是有点乱.
Anyway, I figured out a way to use a different serializer, manually, seems its more efficient and faster because it doesn't pass through Microsoft's serializer, although code wise it's a bit messier.
在您的接口和实现它们的类中将所有返回类型设置为System.ServiceModel.Channels.Message".
Set all return types as "System.ServiceModel.Channels.Message" in your Interfaces and classes implementing them.
[OperationContract]
[WebGet(BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Json)]
System.ServiceModel.Channels.Message GetData();
创建一个扩展方法,以便您可以使用 JSON.NET 序列化程序(或您想使用的任何一个)轻松地从对象构建内存流.
Create an extension method so you could easily build a memory stream out of an object, using the JSON.NET serializer (or whichever you want to use).
public static System.ServiceModel.Channels.Message GetJsonStream(this object obj)
{
//Serialize JSON.NET
string jsonSerialized = JsonConvert.SerializeObject(obj);
//Create memory stream
MemoryStream memoryStream = new MemoryStream(new UTF8Encoding().GetBytes(jsonSerialized));
//Set position to 0
memoryStream.Position = 0;
//return Message
return WebOperationContext.Current.CreateStreamResponse(memoryStream, "application/json");
}
在方法体中,将序列化的对象直接返回到流中
In the method's body, return the object serialized directly to the stream
return yourObject.GetJsonStream();
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