POST asynchronous request and iOSPOST asynchronous request in iOS

POST asynchronous request and iOSPOST asynchronous request in iOS

POST asynchronous request (proxy)

1. Follow <NSURLConnectionDataDelegate>

@interface ViewController ()<NSURLConnectionDataDelegate>

2. The NSMutableData type reData attribute is used to splice data.

@property (nonatomic,strong)NSMutableData *reDtata;

3. Get url

 NSString *urlString = @"http://api.tudou.com/v3/gw";    NSURL *url = [NSURL URLWithString:urlString];

4. Create a request

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

5. Set HTTPMethod to POST (GET request by default)

request.HTTPMethod = @"POST";

6. Set HTTPBody (the body part in the url, which must be converted if the body part contains Chinese characters)

 NSString *bodyStr = @"method=album.channel.get&appKey=myKey&format=json&channel=c&pageNo=1&pageSize=15";    NSData *bodyData = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];    request.HTTPBody = bodyData;

7. Create a connection and set a proxy

  [NSURLConnection connectionWithRequest:request delegate:self];

8. Implement proxy Methods

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    self.reDtata = [NSMutableData data];}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    [_reDtata appendData:data];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection{    NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:_reDtata options:(NSJSONReadingAllowFragments) error:nil];    NSLog(@"%@",dic);}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    }

 

 

 

The following is all the implemented code

-(IBAction) postAsyc :( id) sender {} is the control code dragged out of the storyboard. You can also directly write the code implementation and write a button and Its Implementation Method.

#import "ViewController.h"@interface ViewController ()<NSURLConnectionDataDelegate>@property (nonatomic,strong)NSMutableData *reDtata;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.}- (IBAction)postAsyc:(id)sender {    NSString *urlString = @"http://api.tudou.com/v3/gw";    NSURL *url = [NSURL URLWithString:urlString];    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];    request.HTTPMethod = @"POST";    NSString *bodyStr = @"method=album.channel.get&appKey=myKey&format=json&channel=c&pageNo=1&pageSize=15";    NSData *bodyData = [bodyStr dataUsingEncoding:NSUTF8StringEncoding];    request.HTTPBody = bodyData;    [NSURLConnection connectionWithRequest:request delegate:self];    }- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response{    self.reDtata = [NSMutableData data];}- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{    [_reDtata appendData:data];}- (void)connectionDidFinishLoading:(NSURLConnection *)connection{    NSMutableDictionary *dic = [NSJSONSerialization JSONObjectWithData:_reDtata options:(NSJSONReadingAllowFragments) error:nil];    NSLog(@"%@",dic);}- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error{    }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end