NSString *username = emailField.text;        NSString *password = passwordField.text;        NSMutableDictionary *dictionnary = [NSMutableDictionary dictionary];        [dictionnary setObject:@"admin"  forKey:@"username"];        [dictionnary setObject:@"123456" forKey:@"password"];        NSError *error = nil;        NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionnary                                                           options:kNilOptions                                                             error:&error];           NSString *urlString = @"Sample URL";        NSURL *url = [NSURL URLWithString:urlString]; NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];        [request setHTTPMethod:@"POST"];        [request setHTTPBody:jsonData];        NSURLResponse *response = NULL;        NSError *requestError = NULL;        NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&requestError];        NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding] ;         NSLog(@"%@", responseString);

返回值

/index.php/api/transaction/model/transactionsuccess?username=admin&password=1212‌3

NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"/index.php/api/transaction/model/transactionsuccess?username=adm‌in&password=1212‌3"]]; // Perform request and get JSON as a NSData object NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; NSLog(@"response=%@",response );