Qadeer Mangrio Qadeer Mangrio - 3 months ago 8
Ajax Question

No ajax call on WCF service with method

I am sending a simple ajax call with WCF method, whenit is returning

bad-request
but without method it is showing status to success

Ajax Call

$(document).ready(function(){
$.get("http://localhost:1347/Service1.svc/DoWork", //this shows bad-request
//$.get("http://localhost:1347/Service1.svc", //this shows success
function(data, status){

alert("Data: " + data + "\nStatus: " + status);
});


Operation Contract

namespace WcfService1
{
[ServiceContract]
public interface IService1
{
[OperationContract]
string DoWork();
}
}


Implementation

public class Service1 : IService1
{

public string DoWork()
{
return string.Format("This is DoWork()");
}
}


Global.asax

protected void Application_BeginRequest(object sender, EventArgs e)
{
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Origin", "*");
if (HttpContext.Current.Request.HttpMethod == "OPTIONS")
{
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Methods", "GET, POST");
HttpContext.Current.Response.AddHeader("Access-Control-Allow-Headers", "Content-Type, Accept");
HttpContext.Current.Response.AddHeader("Access-Control-Max-Age", "1728000");
HttpContext.Current.Response.End();
}
}


Web.Config (Edit)

<?xml version="1.0"?>
<configuration>

<appSettings>
<add key="aspnet:UseTaskFriendlySynchronizationContext" value="true"/>
</appSettings>
<system.web>
<compilation debug="true" targetFramework="4.5.2"/>
<httpRuntime targetFramework="4.5.2"/>
<httpModules>
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"/>
</httpModules>
</system.web>
<system.serviceModel>
<behaviors>
<serviceBehaviors>
<behavior>
<!-- To avoid disclosing metadata information, set the values below to false before deployment -->
<serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
<!-- To receive exception details in faults for debugging purposes, set the value below to true. Set to false before deployment to avoid disclosing exception information -->
<serviceDebug includeExceptionDetailInFaults="false"/>
</behavior>
</serviceBehaviors>
</behaviors>
<protocolMapping>
<add binding="basicHttpsBinding" scheme="https"/>
</protocolMapping>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true"/>
</system.serviceModel>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true">
<remove name="ApplicationInsightsWebTracking"/>
<add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web"
preCondition="managedHandler"/>
</modules>


<!--
To browse web app root directory during debugging, set the value below to true.
Set to false before deployment to avoid disclosing web app folder information.
-->
<directoryBrowse enabled="true"/>
<validation validateIntegratedModeConfiguration="false"/>




</system.webServer>

</configuration>

Answer

First, make sure that you enable GET in your contract.

namespace WcfService1
{
    [ServiceContract]
    public interface IService1
    {
        [OperationContract]
        [WebGet(UriTemplate = "DoWork", ResponseFormat = WebMessageFormat.Json)]
        string DoWork();
    }
}

And then make sure to add webHttp in your config.

  <endpointBehaviors>
    <behavior>
      <webHttp />
    </behavior>
  </endpointBehaviors>

You also might need to set your binding to webHttpBindig.

I usually define my endpoints, but I think you can manage without it. This should be a complete example.

  <system.serviceModel>
    <services>
      <service name="WcfService1.IService1" behaviorConfiguration="myServiceBehavior">
        <endpoint address="" binding="webHttpBinding" behaviorConfiguration="myWebBehavior" contract="WcfService1.IService1" />
      </service>
    </services>
    <behaviors>
      <endpointBehaviors>
        <behavior name="myWebBehavior">
          <webHttp />
        </behavior>
      </endpointBehaviors>
      <serviceBehaviors>
        <behavior name="myServiceBehavior">
          <serviceMetadata httpGetEnabled="true" httpsGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="false"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
    <protocolMapping>
      <add binding="basicHttpsBinding" scheme="https"/>
    </protocolMapping>
    <serviceHostingEnvironment aspNetCompatibilityEnabled="true" multipleSiteBindingsEnabled="true"/>
  </system.serviceModel>

A complete example can be found here.

http://www.codeproject.com/Articles/105273/Create-RESTful-WCF-Service-API-Step-By-Step-Guide

Comments