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copied!<p>There are multiple Errors in your Code, Use my Code as a Reference and compare it to yours and you'll get the Errors done by you. The Below code is working correctly from the Point of View of Objective-C. There are some Errors regarding your URL or Service Side.</p> <p><strong>Working Code :</strong></p> <pre><code>NSMutableDictionary *dict = [[NSMutableDictionary alloc] initWithObjectsAndKeys:@"ann",@"uname",@"ann",@"pwd",@"login",@"req", nil]; NSLog(@"dict :: %@",dict); NSError *error2; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:kNilOptions error:&error2]; NSString *post = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]; NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]]; NSLog(@"postLength :: %@",postLength); NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:[NSURL URLWithString:@"http://exemplarr-itsolutions.com/dbook/index.php"]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; [request setValue:@"application/json" forHTTPHeaderField:@"Accept"]; [request setHTTPBody:postData]; NSURLResponse *response; NSError *error3; NSData *POSTReply = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error3]; NSString *str = [[NSString alloc] initWithData:POSTReply encoding:NSUTF8StringEncoding]; NSLog(@"str :: %@",str); </code></pre>

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