替换WCF 4默认JSON序列来JSON.NET [英] Replace default JSON serializer in WCF 4 to JSON.NET

问题描述

我想JSON.NET替换默认的WCF JSON（所有数据类型）序列化。
我已经找遍了网上，找不到工作的解决方案

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.

这是我的目标：

    [JsonObject]
public class TestObject
{
    [JsonProperty("JsonNetName")]
    public string Name = "John";

    [JsonProperty]
    public DateTime Date = DateTime.Now;
}

这是我的WCF功能：

    [OperationContract]
    [WebGet(BodyStyle = WebMessageBodyStyle.Bare, ResponseFormat = WebMessageFormat.Json)]
    List<TestObject> Get();

这是在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中：

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，这就是我得到启动URL时：

And finally, this is what I'm getting when launching the URL:

HTTP：//本地主机：30000 /品牌/获取

"http://localhost:30000/Brands/Get"

[{"Date":"\/Date(1354364412708+0200)\/","Name":"John"}, {"Date":"\/Date(1354364412708+0200)\/","Name":"John"}]

的

JSON答案显然忽略了JSON.NET属性。

The JSON answer obviously ignores the JSON.NET attributes.

我不熟悉与WCF和有很多的麻烦找好工作的答案。

I am not that familiar with WCF and having a lot of trouble finding a good working answer.

谢谢！

推荐答案

无论如何，我想出了一个方法来使用不同的串行器，手动，因为它没有通过微软似乎它更加高效，快速串行，虽然代码明智它是一个有点混乱。

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.

1. 将所有返回类型为System.ServiceModel.Channels.Message中你的接口和实现这些类。

1. 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，所以你可以很容易地建立一个内存流出来的对象，使用在JSON.NET串行器（或任何你想使用）。

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，直接返回序列化到流对象

In the method's body, return the object serialized directly to the stream

return yourObject.GetJsonStream();

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