blocks|key|1189857|text|你可以做到的|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1189858|[ServiceContract]
public+interface+ICatalogService
{
++++[OperationContract]
++++[WebGet(UriTemplate+=+"product/{id}/details?format={format}")]
++++Stream+GetProduct(string+id,+string+format);
}|code-block|syntax|javascript|1189859|然后在代码中根据参数上指定的值处理序列化。|1189860|对于XML，编写一个处理序列化的助手方法。|1189861|public+static+Stream+GetServiceStream(string+format,+string+callback,+DataTable+dt,+SyndicationFeed+sf)
++++++++{
++++++++++++MemoryStream+stream+=+new+MemoryStream();
++++++++++++StreamWriter+writer+=+new+StreamWriter(stream,+Encoding.UTF8);
++++++++++++if+(format+==+"xml")
++++++++++++{
++++++++++++++++XmlSerializer+xmls+=+new+XmlSerializer(typeof(DataTable));
++++++++++++++++xmls.Serialize(writer,+dt);
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/xml";
++++++++++++}
++++++++++++else+if+(format+==+"json")
++++++++++++{
++++++++++++++++var+toJSON+=+new+JavaScriptSerializer();
++++++++++++++++toJSON.RegisterConverters(new+JavaScriptConverter[]+{+new+JavaScriptDataTableConverter()+});
++++++++++++++++writer.Write(toJSON.Serialize(dt));
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/json";
++++++++++++}
++++++++++++else+if+(format+==+"jsonp")
++++++++++++{
++++++++++++++++var+toJSON+=+new+JavaScriptSerializer();
++++++++++++++++toJSON.RegisterConverters(new+JavaScriptConverter[]+{+new+JavaScriptDataTableConverter()+});
++++++++++++++++writer.Write(callback+%2B+"(+"+%2B+toJSON.Serialize(dt)+%2B+"+);");
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/json";
++++++++++++}
++++++++++++else+if+(format+==+"rss")
++++++++++++{
++++++++++++++++XmlWriter+xmlw+=+new+XmlTextWriter(writer);
++++++++++++++++sf.SaveAsRss20(xmlw);
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/xml";
++++++++++++}
++++++++++++else+if+(format+==+"atom")
++++++++++++{
++++++++++++++++XmlWriter+xmlw+=+new+XmlTextWriter(writer);
++++++++++++++++sf.SaveAsAtom10(xmlw);
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/xml";
++++++++++++}
++++++++++++else
++++++++++++{
++++++++++++++++writer.Write("Invalid+formatting+specified.");
++++++++++++++++WebOperationContext.Current.OutgoingResponse.ContentType+=+"text/html";
++++++++++++}

++++++++++++writer.Flush();
++++++++++++stream.Position+=+0;
++++++++++++return+stream;
++++++++}
}|1189862|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

You can do this

<pre><code>[ServiceContract]
public interface ICatalogService
{
 [OperationContract]
 [WebGet(UriTemplate = "product/{id}/details?format={format}")]
 Stream GetProduct(string id, string format);
}
</code></pre>

And then in your code handle serialization based off the value specified on the parameter.

For XML write a helper method that handles your serialization.

<pre><code>public static Stream GetServiceStream(string format, string callback, DataTable dt, SyndicationFeed sf)
 {
 MemoryStream stream = new MemoryStream();
 StreamWriter writer = new StreamWriter(stream, Encoding.UTF8);
 if (format == "xml")
 {
 XmlSerializer xmls = new XmlSerializer(typeof(DataTable));
 xmls.Serialize(writer, dt);
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";
 }
 else if (format == "json")
 {
 var toJSON = new JavaScriptSerializer();
 toJSON.RegisterConverters(new JavaScriptConverter[] { new JavaScriptDataTableConverter() });
 writer.Write(toJSON.Serialize(dt));
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/json";
 }
 else if (format == "jsonp")
 {
 var toJSON = new JavaScriptSerializer();
 toJSON.RegisterConverters(new JavaScriptConverter[] { new JavaScriptDataTableConverter() });
 writer.Write(callback + "( " + toJSON.Serialize(dt) + " );");
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/json";
 }
 else if (format == "rss")
 {
 XmlWriter xmlw = new XmlTextWriter(writer);
 sf.SaveAsRss20(xmlw);
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";
 }
 else if (format == "atom")
 {
 XmlWriter xmlw = new XmlTextWriter(writer);
 sf.SaveAsAtom10(xmlw);
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/xml";
 }
 else
 {
 writer.Write("Invalid formatting specified.");
 WebOperationContext.Current.OutgoingResponse.ContentType = "text/html";
 }

 writer.Flush();
 stream.Position = 0;
 return stream;
 }
}
</code></pre>

blocks|key|1189939|text|如果我没记错的话，下面的方法对我有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1189940|json服务合同：|1189941|[ServiceContract]
public+interface+IServiceJson+{
++[OperationContract()]
++[WebGet(UriTemplate+=+"Operation/?param={param}",
+++++++++++++++++++++++++ResponseFormat+=+WebMessageFormat.Json)]
++ReturnType+Operation(string+param);
}|code-block|syntax|javascript|1189942|xml服务的联系人：|1189943|[ServiceContract]
public+interface+IServiceXml+{
++[OperationContract(Name+=+"OperationX")]
++[WebGet(UriTemplate+=+"Operation/?param={param}",
+++++++++++++++++++++++++ResponseFormat+=+WebMessageFormat.Xml)]
++ReturnType+Operation(string+param);
}|1189944|两者的实现：|1189945|public+class+ServiceImplementation+:+IServiceJson,+IServiceXml+{
++ReturnType+Operation(string+param)+{
++++//+Implementation
++}
}|1189946|和web.config配置(注意json和xml响应的端点)：|1189947|++<system.serviceModel>
++++<behaviors>
++++++<endpointBehaviors>
++++++++<behavior+name="webHttp">
++++++++++<webHttp+/>
++++++++</behavior>
++++++</endpointBehaviors>
++++++<serviceBehaviors>
++++++++<behavior+name="serviceBehaviour">
++++++++++<serviceMetadata+httpGetEnabled="true"+/>
++++++++++<serviceDebug+includeExceptionDetailInFaults="true"+/>
++++++++</behavior>
++++++</serviceBehaviors>
++++</behaviors>
++++<services>
++++++<service+behaviorConfiguration="serviceBehaviour"+name="ServiceImplementation">
++++++++<endpoint+address="json/"+behaviorConfiguration="webHttp"+binding="webHttpBinding"
+++++++++bindingConfiguration="webHttpBindingSettings"+contract="IServiceJson">
++++++++++<identity>
++++++++++++<dns+value="localhost"+/>
++++++++++</identity>
++++++++</endpoint>
++++++++<endpoint+address="xml/"+behaviorConfiguration="webHttp"+binding="webHttpBinding"
+++++++++bindingConfiguration="webHttpBindingSettings"+contract="IServiceXml">
++++++++++<identity>
++++++++++++<dns+value="localhost"+/>
++++++++++</identity>
++++++++</endpoint>
++++++++<endpoint+address="mex"+binding="mexHttpBinding"+contract="IMetadataExchange"+/>
++++++</service>
++++</services>
++++<bindings>
++++++<webHttpBinding>
++++++++<binding+name="webHttpBindingSettings">
++++++++++<readerQuotas+maxStringContentLength="5000000"/>
++++++++</binding>
++++++</webHttpBinding>
++++</bindings>
++</system.serviceModel>|1189948|现在，您可以像这样调用您的服务:+json+response：http://yourServer/json/Operation/?param=value+xml+response：http://yourServer/xml/Operation/?param=value|offset|length|1189949|(很抱歉，如果上面的代码中有任何错误，我没有运行它来进行验证)。|1189950|entityMap|0|LINK|mutability|MUTABLE|url|http://yourserver/json/Operation/?param=value|1|http://yourserver/xml/Operation/?param=value^0|0|0|0|0|0|0|0|0|0|V|19|0|2I|18|1|0|0^^$0|@$1|2|3|4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1B|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1C|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1D|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|1E|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|1F|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|1G|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|1H|8|@]|9|@]|A|$]]|$1|S|3|T|5|F|7|1I|8|@]|9|@]|A|$G|H]]|$1|U|3|V|5|6|7|1J|8|@]|9|@$W|1K|X|1L|1|1M]|$W|1N|X|1O|1|1P]]|A|$]]|$1|Y|3|Z|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]]|11|$12|$5|13|14|15|A|$16|17]]|18|$5|13|14|15|A|$16|19]]]]

If I remember correctly, below method worked for me:

Contract for json service:

<pre><code>[ServiceContract]
public interface IServiceJson {
 [OperationContract()]
 [WebGet(UriTemplate = "Operation/?param={param}",
 ResponseFormat = WebMessageFormat.Json)]
 ReturnType Operation(string param);
}
</code></pre>

Contact for xml service:

<pre><code>[ServiceContract]
public interface IServiceXml {
 [OperationContract(Name = "OperationX")]
 [WebGet(UriTemplate = "Operation/?param={param}",
 ResponseFormat = WebMessageFormat.Xml)]
 ReturnType Operation(string param);
}
</code></pre>

Implementation for both:

<pre><code>public class ServiceImplementation : IServiceJson, IServiceXml {
 ReturnType Operation(string param) {
 // Implementation
 }
}
</code></pre>

And web.config configuration (note endpoints for json and xml responses):

<pre><code> &lt;system.serviceModel&gt;
 &lt;behaviors&gt;
 &lt;endpointBehaviors&gt;
 &lt;behavior name="webHttp"&gt;
 &lt;webHttp /&gt;
 &lt;/behavior&gt;
 &lt;/endpointBehaviors&gt;
 &lt;serviceBehaviors&gt;
 &lt;behavior name="serviceBehaviour"&gt;
 &lt;serviceMetadata httpGetEnabled="true" /&gt;
 &lt;serviceDebug includeExceptionDetailInFaults="true" /&gt;
 &lt;/behavior&gt;
 &lt;/serviceBehaviors&gt;
 &lt;/behaviors&gt;
 &lt;services&gt;
 &lt;service behaviorConfiguration="serviceBehaviour" name="ServiceImplementation"&gt;
 &lt;endpoint address="json/" behaviorConfiguration="webHttp" binding="webHttpBinding"
 bindingConfiguration="webHttpBindingSettings" contract="IServiceJson"&gt;
 &lt;identity&gt;
 &lt;dns value="localhost" /&gt;
 &lt;/identity&gt;
 &lt;/endpoint&gt;
 &lt;endpoint address="xml/" behaviorConfiguration="webHttp" binding="webHttpBinding"
 bindingConfiguration="webHttpBindingSettings" contract="IServiceXml"&gt;
 &lt;identity&gt;
 &lt;dns value="localhost" /&gt;
 &lt;/identity&gt;
 &lt;/endpoint&gt;
 &lt;endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /&gt;
 &lt;/service&gt;
 &lt;/services&gt;
 &lt;bindings&gt;
 &lt;webHttpBinding&gt;
 &lt;binding name="webHttpBindingSettings"&gt;
 &lt;readerQuotas maxStringContentLength="5000000"/&gt;
 &lt;/binding&gt;
 &lt;/webHttpBinding&gt;
 &lt;/bindings&gt;
 &lt;/system.serviceModel&gt;
</code></pre>

Now you can call your service like this:
json response: <a href="http://yourServer/json/Operation/?param=value" rel="noreferrer">http://yourServer/json/Operation/?param=value</a>
xml response: <a href="http://yourServer/xml/Operation/?param=value" rel="noreferrer">http://yourServer/xml/Operation/?param=value</a>

(Sorry if there are any bugs in code above, I didn't run it for verification).

I have a ServiceContract describing a method used in a WCF service. The method has a WebGet attribute which defines a UriTemplate and ResponseFormat. 

I want to reuse a single method and have multiple WebGet attributes with different UriTemplates and different ResponseFormats. Basically I'm hoping to avoid having multiple methods just to differentiate things like return type being XML vs. JSON. In all of the examples I've seen so far I am required to create a different method for each WebGet attribute though. Here's a sample OperationContract

<pre><code>[ServiceContract]
public interface ICatalogService
{
 [OperationContract]
 [WebGet(UriTemplate = "product/{id}/details?format=xml", ResponseFormat = WebMessageFormat.Xml)]
 Product GetProduct(string id);

 [OperationContract]
 [WebGet(UriTemplate = "product/{id}/details?format=json", ResponseFormat = WebMessageFormat.Json)]
 Product GetJsonProduct(string id);
}
</code></pre>

Using the example above I'd like to use the GetProduct method for both the xml and json return types like this:

<pre><code>[ServiceContract]
public interface ICatalogService
{
 [OperationContract]
 [WebGet(UriTemplate = "product/{id}/details?format=xml", ResponseFormat = WebMessageFormat.Xml)]
 [WebGet(UriTemplate = "product/{id}/details?format=json", ResponseFormat = WebMessageFormat.Json)]
 Product GetProduct(string id);
}
</code></pre>

Is there a way to achieve this so I'm not stuck writing different methods just to return different ResponseFormats?

Thanks!

Can a WCF OperationContract method's WebGet attribute have multiple ResponseFormat types?

JSON

我有一个描述WCF服务中使用的方法的ServiceContract。该方法有一个定义UriTemplate和ResponseFormat的WebGet属性。我想重用单个方法，并拥有具有不同UriTemplates和不同ResponseFormats的多个WebGet属性。基本上，我希望避免使用多个方法来区分返回类型是X...

问一个WCF OperationContract方法的WebGet属性可以有多个ResponseFormat类型吗？
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