無需其他類庫

1: - (IBAction)callapi:(id)sender { 2: NSURL *url=[NSURL URLWithString:@"http://..."]; 3: NSURLRequest *request=[NSURLRequest requestWithURL:url]; 4: [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { 5: //json 6: NSDictionary *r=[NSJSONSerialization JSONObjectWithData:data options:0 error:NULL]; 7: int cnt=[r count]; 8: NSLog(@"%d",cnt); 9: [self resultlbl].text=[NSString stringWithFormat:@"%d",cnt]; 10:? 11: //string 12: //NSString *str=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; 13: //NSLog(str); 14: //[self resultlbl].text=r[0][0]; 15: }]; 16: }

post

1: - (IBAction)postsend:(id)sender { 2: NSURL *url = [NSURL URLWithString:@"http://...."]; 3: NSMutableURLRequest *rq = [NSMutableURLRequest requestWithURL:url]; 4: [rq setHTTPMethod:@"POST"]; 5: 6: NSData *jsonData = [@"{ \"參數(shù)名\": 數(shù)值,\"參數(shù)名\":\"字符\"... }" dataUsingEncoding:NSUTF8StringEncoding]; 7: [rq setHTTPBody:jsonData]; 8: 9: [rq setValue:@"application/json" forHTTPHeaderField:@"Content-Type"]; 10: [rq setValue:[NSString stringWithFormat:@"%ld", (long)[jsonData length]] forHTTPHeaderField:@"Content-Length"]; 11: 12: [NSURLConnection sendAsynchronousRequest:rq queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { 13: //code 14: NSString *str=[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; 15: NSLog(str); 16: }]; 17: 18: }

轉(zhuǎn)載于:https://www.cnblogs.com/czcz1024/p/4537895.html

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