How to send POST and GET request?
Sending POST and GET requests in iOS is quite easy; and there's no need for an additional framework.
POST Request:
We begin by creating our POST's body (ergo. what we'd like to send) as an NSString, and converting it to NSData.
NSString *post = [NSString stringWithFormat:@"test=Message&this=isNotReal"];NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];Next up, we read the postData's length, so we can pass it along in the request.
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];Now that we have what we'd like to post, we can create an NSMutableURLRequest, and include our postData.
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];[request setURL:[NSURL URLWithString:@"http://YourURL.com/FakeURL"]];[request setHTTPMethod:@"POST"];[request setValue:postLength forHTTPHeaderField:@"Content-Length"];[request setHTTPBody:postData];let post = "test=Message&this=isNotReal"let postData = post.data(using: String.Encoding.ascii, allowLossyConversion: true)let postLength = String(postData!.count)var request = URLRequest(url: URL(string: "http://YourURL.com/FakeURL/PARAMETERS")!)request.httpMethod = "POST"request.addValue(postLength, forHTTPHeaderField: "Content-Length")request.httpBody = postData;And finally, we can send our request, and read the reply by creating a new NSURLSession:
NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { NSString *requestReply = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; NSLog(@"Request reply: %@", requestReply);}] resume];let session = URLSession(configuration: .default)session.dataTask(with: request) {data, response, error in let requestReply = NSString(data: data!, encoding: String.Encoding.ascii.rawValue) print("Request reply: \(requestReply!)")}.resume()GET Request:
With the GET request it's basically the same thing, only without the HTTPBody and Content-Length.
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];[request setURL:[NSURL URLWithString:@"http://YourURL.com/FakeURL/PARAMETERS"]];[request setHTTPMethod:@"GET"];NSURLSession *session = [NSURLSession sessionWithConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];[[session dataTaskWithRequest:request completionHandler:^(NSData *data, NSURLResponse *response, NSError *error) { NSString *requestReply = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]; NSLog(@"Request reply: %@", requestReply);}] resume];var request = URLRequest(url: URL(string: "http://YourURL.com/FakeURL/PARAMETERS")!)request.httpMethod = "GET"let session = URLSession(configuration: .default)session.dataTask(with: request) {data, response, error in let requestReply = NSString(data: data!, encoding: String.Encoding.ascii.rawValue) print("Request reply: \(requestReply!)")}.resume()On a side note, you can add Content-Type (and other data) by adding the following to our NSMutableURLRequest. This might be required by the server when requesting, e.g, a json.
[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];Response code can also be read using [(NSHTTPURLResponse*)response statusCode].
request.addValue("application/json", forHTTPHeaderField: "Content-Type")request.addValue("application/json", forHTTPHeaderField: "Accept")Update: sendSynchronousRequest is deprecated from ios9 and osx-elcapitan (10.11) and out.
NSURLResponse *requestResponse; NSData *requestHandler = [NSURLConnection sendSynchronousRequest:request returningResponse:&requestResponse error:nil]; NSString *requestReply = [[NSString alloc] initWithBytes:[requestHandler bytes] length:[requestHandler length] encoding:NSASCIIStringEncoding]; NSLog(@"requestReply: %@", requestReply);
By using RestKit you can make a simple POST request (see this GitHub page for more details).
Import RestKit in your header file.
#import <RestKit/RestKit.h>Then you can start by creating a new RKRequest.
RKRequest *MyRequest = [[RKRequest alloc] initWithURL:[[NSURL alloc] initWithString:@"http://myurl.com/FakeUrl/"]];Then specify what kind of request you want to make (in this case, a POST request).
MyRequest.method = RKRequestMethodPOST;MyRequest.HTTPBodyString = YourPostString;And then set your request as a JSON in additionalHTTPHeaders.
MyRequest.additionalHTTPHeaders = [[NSDictionary alloc] initWithObjectsAndKeys:@"application/json", @"Content-Type", @"application/json", @"Accept", nil];Finally, you can send the request.
[MyRequest send];Additionally you can NSLog your request to see the outcome.
RKResponse *Response = [MyRequest sendSynchronously];NSLog(@"%@", Response.bodyAsString);Sources: RestKit.org and Me.
-(void)postmethod { NSString * post =[NSString stringWithFormat:@"Email=%@&Password=%@",_txt_uname.text,_txt_pwd.text]; NSData *postdata= [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]; NSString *postLength=[NSString stringWithFormat:@"%lu",(unsigned long)[postdata length]]; NSMutableURLRequest *request= [[NSMutableURLRequest alloc]init]; NSLog(@"%@",app.mainurl); // NSString *str=[NSString stringWithFormat:@"%@Auth/Login",app.mainurl]; NSString *str=YOUR URL; [request setURL:[NSURL URLWithString:str]]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:postdata]; NSError *error; NSURLResponse *response; NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSString *returnstring=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding]; NSMutableDictionary *dict=[returnstring JSONValue]; NSLog(@"%@",dict); }-(void)GETMethod{NSString *appurl; NSString *temp =@"YOUR URL"; appurl = [NSString stringWithFormat:@"%@uid=%@&cid=%ld",temp,user_id,(long)clubeid]; appurl = [appurl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; NSMutableURLRequest *request=[NSMutableURLRequest requestWithURL:[NSURL URLWithString:appurl]]; NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse: nil error: nil ]; NSString *returnString = [[NSString alloc] initWithData:returnData encoding: NSUTF8StringEncoding]; NSMutableDictionary *dict_eventalldata=[returnString JSONValue]; NSString *success=[dict_eventalldata objectForKey:@"success"];}