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POSending a JSON via POST in NSURLRequest
 

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    <p>I have a problem with sending a JSON to a Server with REST API. This is the code i use:</p> <pre><code>NSString *jsonPostBody = [NSString stringWithFormat:@"'json' = '{\"user\":{\"username\":" "\"%@\"" ",\"password\":" "\"%@\"" "}}'", [username stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding], [password stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]; NSData *postData = [jsonPostBody dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES]; NSString *apiPathParams = [NSString stringWithFormat:@"%@", @"getUser" ]; NSURL *url = [NSURL URLWithString:[[apiPath retain] stringByAppendingString:apiPathParams]]; NSMutableURLRequest* request = [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringLocalCacheData timeoutInterval:180.0]; [request setHTTPMethod:@"POST"]; [request setHTTPBody:postData]; NSString* postDataLengthString = [[NSString alloc] initWithFormat:@"%d", [postData length]]; [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; [request setValue:postDataLengthString forHTTPHeaderField:@"Content-Length"]; [self internalRequest:request]; </code></pre> <p>This is what the API would look like, if it was a html form:</p> <pre><code>&lt;form method="post" action="someAPI-URL"&gt; &lt;input name="json" value="{"user":...}" /&gt; &lt;/form&gt; </code></pre> <p>This is what my POST Data looks like when i add it to the request:</p> <pre><code>json={"user":{"username":"someUser","password":"somePassword"}} </code></pre> <p>For a reason I don't know the POST Data does not arrive at the server. Have i done something wrong with the formatting of the dataString? How exactly must i format my dataString so that it matches the String a form as shown above would deliver to the server?</p> <p>Any help would be highly appreciated.</p> <p>P.S. I would rather not use ASIHttpRequest, since i took over the project from somebody else an every other request works fine, except this post-request. So changing this whole bulk to an other connection framework would be very time consuming.</p> <p>Here is the internalRequest Method's sourcecode</p> <pre><code>NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:req delegate:self]; NSMutableDictionary *di = [NSMutableDictionary dictionaryWithObject:[[NSMutableData alloc] init] forKey:@"receivedData"]; [di setObject:[NSString stringWithFormat:@"%i",identifier] forKey:@"identifier"]; if (delegate == nil) { delegate = self; } [di setObject:delegate forKey:@"delegate"]; CFDictionaryAddValue(connectionToInfoMapping, connection, di) </code></pre>
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    1. COCan you show us your internalRequest method ?
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    2. COsure. Sorry. Forgot about that. :) But that should not be the problem. I can reach the server. I am also using the correct method (getUser) and i get a response from the server and from the right method (getUser), but my postdata won't reach the server for some reason.
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    3. CONSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:req delegate:self]; this looks little scary to me. If connection has to be local variable can you change it to [NSURLConnection connectionWithRequest:req delegate:self]; can you place breakpoint in NSURLConnection delegate method - (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response { int statusCodeInt = [((NSHTTPURLResponse *)response) statusCode]; NSLog(@"Response is %d",statusCodeInt);} and see what the response code from your server is.
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