WCF REST service does not work with parameter in URI - wcf

Question

I have a WCF REST service (.NET4).
It works fine (browser, ajax call) for calls without parameters but I cannot get it to work with parameters. Neither in the browser nor via an ajax call.
My contract:
[OperationContract]
[WebGet(
ResponseFormat = WebMessageFormat.Json,
UriTemplate = "knowledgefields")]
IEnumerable<cKnowledgeField> GetKnowledgeFields();
[OperationContract]
[WebGet(
BodyStyle = WebMessageBodyStyle.Bare,
ResponseFormat = WebMessageFormat.Json,
RequestFormat = WebMessageFormat.Json,
UriTemplate = "knowledgeitems?id={id}")]
IEnumerable<cKnowledgeItem> GetKnowledgeItemsByField(string id);
My web.config
<configuration>
<appSettings/>
<system.web>
<compilation debug="true" targetFramework="4.0">
<assemblies>
<add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
</assemblies>
</compilation>
</system.web>
<system.serviceModel>
<standardEndpoints>
<webHttpEndpoint>
<standardEndpoint name="" automaticFormatSelectionEnabled="false" defaultOutgoingResponseFormat="Json"/>
</webHttpEndpoint>
</standardEndpoints>
<services>
<service name="ExpertData.expertREST" behaviorConfiguration="META">
<endpoint address="" bindingConfiguration="webHttpBindingWithJsonP" binding="webHttpBinding" contract="ExpertData.IexpertREST"/>
</service>
</services>
<protocolMapping>
<add scheme="http" binding="webHttpBinding"/>
</protocolMapping>
<behaviors>
<serviceBehaviors>
<behavior name="META">
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true" />
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
<endpointBehaviors>
<behavior>
<webHttp />
</behavior>
</endpointBehaviors>
</behaviors>
<bindings>
<webHttpBinding>
<binding name="webHttpBindingWithJsonP" crossDomainScriptAccessEnabled="true"/>
</webHttpBinding>
</bindings>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="false" />
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true"/>
<directoryBrowse enabled="true"/>
</system.webServer>
<connectionStrings>
<add name="FindAnExpertEntities" connectionString="metadata=res://*/ExpertData.csdl|res://*/ExpertData.ssdl|res://*/ExpertData.msl;provider=System.Data.SqlClient;provider connection string="data source=WIN8ATWORK\SQLEXPRESS;initial catalog=FindAnExpert;integrated security=True;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient"/>
</connectionStrings>
</configuration>
Ajax call:
function getKnowledgeItems(id) {
return $.ajax({
url: "http://localhost:31634/expertREST.svc/knowledgeitems",
dataType: "jsonp"
data: { "id" : id + "" }
}).then( function( data, textStatus, jqXHR ) {
amplify.publish( "knowledgeItemsdata.updated", data );
});
}

Answer 1

Your AJAX call is passing the ID in the message body, BUT you service expects it as as part of the query string. Change javascript to:
return $.ajax({
url: "http://localhost:31634/expertREST.svc/knowledgeitems"
+ "?id=" + id,
dataType: "jsonp"
}).then( function( data, textStatus, jqXHR ) {
amplify.publish( "knowledgeItemsdata.updated", data );
});