Bagaimana cara mengirim permintaan POST dan GET?

Mengirim permintaan POST dan GET di iOS cukup mudah; dan tidak diperlukan kerangka tambahan.

POST Permintaan:

Kita mulai dengan membuat body POST kita (jadi apa yang ingin kita kirim) sebagai NSString, dan mengubahnya menjadi NSData.

objective-c

NSString *post = [NSString stringWithFormat:@"test=Message&this=isNotReal"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];

Selanjutnya, kita membaca postData's length, sehingga kita dapat meneruskannya dalam permintaan.

NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

Sekarang kita memiliki apa yang ingin kita posting, kita dapat membuat NSMutableURLRequest, dan memasukkan postData kita.

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];

swift

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;

Dan terakhir, kita dapat mengirimkan permintaan kita, dan membaca balasannya dengan membuat NSURLSession baru:

objective-c

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];

swift

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 Permintaan:

Dengan permintaan GET pada dasarnya sama, hanya tanpa HTTPBody dan Content-Length.

objective-c

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];

swift

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()

Sebagai tambahan, Anda dapat menambahkan Content-Type (dan data lainnya) dengan menambahkan yang berikut ini ke NSMutableURLRequest kami. Ini mungkin diperlukan oleh server saat meminta, misalnya, json.

objective-c

[request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
[request setValue:@"application/json" forHTTPHeaderField:@"Accept"];

Kode respon juga dapat dibaca menggunakan [(NSHTTPURLResponse*)response statusCode].

swift

request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")

Pembaruan: sendSynchronousRequest tidak digunakan lagi dari ios9 dan osx-elcapitan (10.11) dan keluar.

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);

Dengan menggunakan RestKit Anda dapat membuat permintaan POST sederhana (lihat halaman GitHub untuk detail lebih lanjut).

Impor RestKit di file header Anda.

#import <RestKit/RestKit.h>

Kemudian Anda bisa mulai dengan membuat RKRequest baru.

RKRequest *MyRequest = [[RKRequest alloc] initWithURL:[[NSURL alloc] initWithString:@"http://myurl.com/FakeUrl/"]];

Kemudian tentukan jenis permintaan apa yang ingin Anda buat (dalam hal ini, permintaan POST).

MyRequest.method = RKRequestMethodPOST;
MyRequest.HTTPBodyString = YourPostString;

Dan kemudian atur permintaan Anda sebagai JSON di additionalHTTPHeaders.

MyRequest.additionalHTTPHeaders = [[NSDictionary alloc] initWithObjectsAndKeys:@"application/json", @"Content-Type", @"application/json", @"Accept", nil];

Terakhir, Anda dapat mengirimkan permintaan tersebut.

[MyRequest send];

Selain itu, Anda dapat NSLog permintaan Anda untuk melihat hasilnya.

RKResponse *Response = [MyRequest sendSynchronously];
NSLog(@"%@", Response.bodyAsString);

Sumber: RestKit.org dan Saya.

kontrol tampilan.h

@interface ViewController     UIViewController<UITableViewDataSource,UITableViewDelegate>

  @property (weak, nonatomic) IBOutlet UITableView *tableView;
  @property (strong,nonatomic)NSArray *array;
  @property NSInteger select;
  @end

lihat.m

  - (void)viewDidLoad {
 [super viewDidLoad];
 NSString *urlString = [NSString stringWithFormat:    @"https://maps.googleapis.com/maps/api/place/nearbysearch/json?location=11.021459,76.916332&radius=2000&types=atm&sensor=false&key=AIzaS yD7c1IID7zDCdcfpC69fC7CUqLjz50mcls"];
 NSURL *url = [NSURL URLWithString: urlString];
 NSData *data = [NSData dataWithContentsOfURL:url];
 NSDictionary *jsonData = [NSJSONSerialization JSONObjectWithData:      
 data options: 0 error: nil];
 _array = [[NSMutableArray alloc]init];
 _array = [[jsonData objectForKey:@"results"] mutableCopy];
[_tableView reloadData];}
// Do any additional setup after loading the view, typically from a         



 - (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
  }
 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

return 1;
  }

  - (NSInteger)tableView:(UITableView *)tableView
  numberOfRowsInSection:(NSInteger)section {

 return _array.count;
  }

 - (UITableViewCell *)tableView:(UITableView *)tableView
     cellForRowAtIndexPath:(NSIndexPath *)indexPath {

 static NSString *cellid = @"cell";
 UITableViewCell *cell = [tableView
                         dequeueReusableCellWithIdentifier:cellid];
 cell = [[UITableViewCell
         alloc]initWithStyle:UITableViewCellStyleSubtitle
        reuseIdentifier:cellid];

 cell.textLabel.text = [[_array
 valueForKeyPath:@"name"]objectAtIndex:indexPath.row]; 
 cell.detailTextLabel.text = [[_array 
 valueForKeyPath:@"vicinity"]objectAtIndex:indexPath.row];
 NSURL *imgUrl = [NSURL URLWithString:[[_array
 valueForKey:@"icon"]objectAtIndex:indexPath.row]];  
 NSData *imgData = [NSData dataWithContentsOfURL:imgUrl];
 cell.imageView.layer.cornerRadius =        
 cell.imageView.frame.size.width/2;
 cell.imageView.layer.masksToBounds = YES;
 cell.imageView.image = [UIImage imageWithData:imgData];

 return cell;
 }

 @end

sel tabel.h

 @interface TableViewCell : UITableViewCell
 @property (weak, nonatomic) IBOutlet UIImageView *imgView;
 @property (weak, nonatomic) IBOutlet UILabel *lblName;
 @property (weak, nonatomic) IBOutlet UILabel *lblAddress;