Calling a Web Service with a warped JSON in iOS - ios

Question

I use this type of function to call my Web Services from my iOS App:
-(NSData *)getMainMenuJsonData{
NSString *urlAsString = [NSString stringWithFormat:#"%#%#/%#/%#",[configs valueForKey:#"wsURL"], [configs valueForKey:#"clientToken"], [configs valueForKey:#"appToken"], [CommonsUtils getCommonUtil].getAppLanguage];
NSString* webStringURL = [urlAsString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:webStringURL] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:2.5];
NSURLResponse * response = nil;
NSError * error = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];
NSUInteger statusCode = ((NSHTTPURLResponse *)response).statusCode;
if (statusCode == 200 && error == Nil) {
if (error != Nil) {
return Nil;
} else {
return data;
}
}
else {
return Nil;
}
}
As far as I understand, I'm sending something like:
http://myserver.com/WSFunction/Parameter1/Parameter2 and so on.
This is a problem for me because if I need to add 1 parameter I have to create another service with almost the same functionality but using the new parameter i.e:
http://myserver.com/WSFunction/Parameter1/Parameter2/Parameter3
My idea is to call always the same Web Service but passing the version of the Service and a JSON with all the parameters that I need, but as far as I know, I have to warp the JSON in the message (maybe this is not the right word, and that is maybe why I can't find anything in Google), so at the end I will finish with something like:
http://myserver.com/WSVersionNumber/[SerializedJSON]
And in the server I will have a logic like this:
Case:"Version 1"
Deserialize JSON and use Parameter1 and Parameter2
Case:"Version 2"
Deserialize JSON and use Parameter1 and Parameter2 and Parameter3
At the end what I want is to do something like this in iOS:
-(NSData *)getMainMenuJsonData{
NSString *urlAsString = #"http://myserver.com/WSVersionNumber/"
NSURLRequest * urlRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:webStringURL] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:2.5];
[urlRequest setParameterName:#"SerializedJSON" withValue:SerializedJSONVar];
NSURLResponse * response = nil;
NSError * error = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:&error];
NSUInteger statusCode = ((NSHTTPURLResponse *)response).statusCode;
if (statusCode == 200 && error == Nil) {
if (error != Nil) {
return Nil;
} else {
return data;
}
}
else {
return Nil;
}
}
Is there a way to do something like this in iOS?, I'm not interested in doing this with a third party library because is the enterprise policy.
Thanks in advance.

Answer 1

Please check, may be this link will helps you,
This example use ASIHTTPRequest, very easy and effective way to deal with JSON.
https://stackoverflow.com/a/7928734/4852079

Answer 2

Thanks to the answer posted by Tejas Patel that lead me to the right information.
The code ended like this:
-(NSData *)getLogin:(NSMutableDictionary *)pData {
NSString *tUrlAsString = [NSString stringWithFormat:#"%#%#/%#/%#/GetLogin",[_Configs valueForKey:#"wsURL"], [_Configs valueForKey:#"wsVersion"], [_Configs valueForKey:#"clientToken"], [CommonsUtils getCommonUtil].getAppLanguage];
NSString* tWebStringURL = [tUrlAsString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSMutableURLRequest * tUrlRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:tWebStringURL] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:2.5];
[tUrlRequest setHTTPMethod:#"POST"];
[tUrlRequest setValue:#"application/json" forHTTPHeaderField:#"Content-Type"];
NSData *tJsonData;
if ([NSJSONSerialization isValidJSONObject:pData]) {
NSError *tError;
tJsonData = [NSJSONSerialization dataWithJSONObject:pData options:NSJSONWritingPrettyPrinted error:&tError];
if (!tJsonData) {
NSLog(#"json Data %#",tError.description);
return Nil;
} else {
NSString *tJSONString = [[NSString alloc] initWithBytes:[tJsonData bytes] length:[tJsonData length] encoding:NSUTF8StringEncoding];
NSLog(#"JSON String %#",tJSONString);
[tUrlRequest setHTTPBody:tJsonData];
NSURLResponse * tResponse = nil;
NSData * tData = [NSURLConnection sendSynchronousRequest:tUrlRequest returningResponse:&tResponse error:&tError];
NSUInteger tStatusCode = ((NSHTTPURLResponse *)tResponse).statusCode;
if (tStatusCode == 200 && tError == Nil) {
if (tError != Nil) {
return Nil;
} else {
return tData;
}
} else {
return Nil;
}
}
} else {
NSLog(#"This Data can't be serialized");
return Nil;
}
}
At the end you just have to add a JSON inside the setHTTPBody, so in your REST service you have to receive all the nodes of your JSON with the same name for the variables.
I hope this helps someone in the future.
Regards.