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POAjax call to WCF Web Service returns 400 Bad Request
 

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    <blockquote> <p><strong>Possible Duplicate:</strong><br> <a href="https://stackoverflow.com/questions/10986479/wcf-web-service-returns-bad-request-error-when-invoked-through-javascript">WCF Web Service returns &ldquo;Bad Request&rdquo; error when invoked through Javascript</a> </p> </blockquote> <p>I have a simple WCF web service Service1 with just one method Test() which returns a string. I have deployed this web service on a test machine, but when I try to invoke the Test method from the browser I simply get a 400 Bad Request error. The same happens when I try to invoke the method through an AJAX GET request. But surprisingly, the method returns the correct result when invoked through the WCFTestClient.</p> <p>Here is the code:</p> <pre><code>[ServiceContract] public interface IService1 { // This method can be called to get a list of page sets per report. [OperationContract] [WebGet] string Test(); } public class Service1 : IService1 { public string Test() { return "test"; } } </code></pre> <p>This is my AJAX request:</p> <pre><code> var serverUrl1 = 'http://' + baseUrl + ':86/Service1.svc'; function GetTestString() { var methodUrl = serverUrl1 + "/Test"; $.ajax({ async: false, type: "GET", contentType: "application/json; charset=utf-8", dataType: "json", url: methodUrl, beforeSend: function (XMLHttpRequest) { //ensures the results will be returned as JSON. XMLHttpRequest.setRequestHeader("Accept", "application/json"); }, success: function (data) { ShowQRGSlides(data.d); }, error: function (XmlHttpRequest, textStatus, errorThrown) { alert("ERROR: GetAvailablePages() Check your browsers javascript console for more details." + " \n XmlHttpRequest: " + XmlHttpRequest + " \n textStatus: " + textStatus + " \n errorThrown: " + errorThrown); } }); } </code></pre> <p>Here is the web.config file for my web service:</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;configuration&gt; &lt;system.web&gt; &lt;compilation debug="true" targetFramework="4.0" /&gt; &lt;customErrors mode="Off"/&gt; &lt;/system.web&gt; &lt;system.serviceModel&gt; &lt;behaviors&gt; &lt;serviceBehaviors&gt; &lt;behavior&gt; &lt;!-- To avoid disclosing metadata information, set the value below to false and remove the metadata endpoint above before deployment --&gt; &lt;serviceMetadata httpGetEnabled="true"/&gt; &lt;!-- 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 --&gt; &lt;serviceDebug includeExceptionDetailInFaults="false"/&gt; &lt;/behavior&gt; &lt;/serviceBehaviors&gt; &lt;/behaviors&gt; &lt;serviceHostingEnvironment multipleSiteBindingsEnabled="true" /&gt; &lt;/system.serviceModel&gt; &lt;system.webServer&gt; &lt;modules runAllManagedModulesForAllRequests="true"/&gt; &lt;/system.webServer&gt; &lt;/configuration&gt; </code></pre> <p>This is just the simple web.config which gets automatically generated. I am unable to figure out why this simple web service method is not accessible through the browser or ajax. The same method returns the result when accessed through the WCFTestClient.</p> <p>Any inputs will be greatly appreciated! Thanks.</p>
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