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POAccess-Control-Allow-Origin error sending a jQuery Post
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2013-01-23T10:14:27.440
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Body
I read lot of the forums for "Access-Control-Allow-Origin" issue. Most of the forum asks to use dataType:'jsonp', but typically jsonp will hit GET request, i want to do POST request. Eventually GET request also not works. Actually i converting iPhone app to PhoneGap, so re-writing objective-c code to HTML-5 & Jquery mobile. The url which i am trying to hit works very well in objective-c. Here is objective-c code <pre><code>NSString *username=[self urlEncodeValue:[userNameField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]]; NSString *password=[self urlEncodeValue:[passWordField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]]; NSString *params = [[NSString alloc] initWithFormat:@"username=%@&password=%@",username,password]; NSData *paramData = [params dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; [params release]; NSString *paramsLength = [NSString stringWithFormat:@"%d", [paramData length]]; NSString *urlString=[[NSString alloc] initWithFormat:@"%@?",[dict valueForKey:@"LoginAuthentication"]]; NSURL *authURL = [NSURL URLWithString:urlString]; [urlString release]; NSHTTPURLResponse *authenticationResponse= nil; NSMutableURLRequest *authenticationRequest = [NSMutableURLRequest requestWithURL:authURL]; [authenticationRequest setHTTPMethod:@"POST"]; [authenticationRequest setValue:paramsLength forHTTPHeaderField:@"Content-Length"]; [authenticationRequest setHTTPBody:paramData]; NSError *error = nil; int errorCode; NSData *responseData = [NSURLConnection sendSynchronousRequest:authenticationRequest returningResponse:&authenticationResponse error:&error]; if ([authenticationResponse respondsToSelector:@selector(allHeaderFields)]) { //success } </code></pre> The above code works very well. Here's the code which i converted to javascript which gives "Access-Control-Allow-Origin" error <pre><code>$(document).ready( function() { $.ajax({ type: "POST", crossDomain: true, //dataType:'jsonp', //callback: '?', url : "https://externalserver.com/loginAuth?", data : {'username' : 'username', 'password' : 'password'}, success : function (response) { alert('login failed'); }, error: function(e){ console.log(e); } }); }); </code></pre> I tried with GET/POST request, and tried to run this local file in some local server. Nothing works. I am getting below error message <blockquote> XMLHttpRequest cannot load <a href="https://externalserver.com/loginAuth" rel="nofollow">https://externalserver.com/loginAuth</a>?. Origin null is not allowed by Access-Control-Allow-Origin. XMLHttpRequest cannot load <a href="https://externalserver.com/loginAuth" rel="nofollow">https://externalserver.com/loginAuth</a>?. Origin null is not allowed by Access-Control-Allow-Origin. </blockquote>
Tags
<jquery><cordova><jquery-mobile>
Title
Access-Control-Allow-Origin error sending a jQuery Post
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PostAcceptedAnswerId
1. PO
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1. USgviswanathan
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