同步的 get 请求

#pragma mark - 同步的 get 请求
- (IBAction)GETSynButtonDidClicked:(UIButton *)sender {// 1、网址里面必须写 http://NSString *urlString = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213";// 2、假设网址有汉字须要转换(没有汉字也能够写)urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];// 3、依据字符串创建 url(统一资源定位符)NSURL *url = [NSURL URLWithString:urlString];// 4、依据 url 创建 request 请求类的对象NSURLRequest *request = [NSURLRequest requestWithURL:url];// 5、開始去请求网络、数据(同步) 返回dataNSData *receiveData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];// 6、系统自带json解析NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:receiveData options:(NSJSONReadingMutableContainers) error:nil];NSArray *array = dict[@"news"];self.newsArray = [NSMutableArray array];for (NSDictionary *smallDict in array) {NewsModal *modal = [[NewsModal alloc] init];[modal setValuesForKeysWithDictionary:smallDict];[self.newsArray addObject:modal];}for (NewsModal *modal in self.newsArray) {NSLog(@"%@", modal.title);}
}

异步的 get 请求

#pragma mark - 异步的 get 请求
- (IBAction)GETAsyButtonDidClicked:(UIButton *)sender {// 1、拼接 urlString,网址里面必须写 http://NSString *urlString = @"http://ipad-bjwb.bjd.com.cn/DigitalPublication/publish/Handler/APINewsList.ashx?

date=20131129&startRecord=1&len=5&udid=1234567890&terminalType=Iphone&cid=213"

; // 2、依据字符串创建 URL(统一资源定位符) NSURL *url = [NSURL URLWithString:urlString]; // 3、依据 url 创建 request 请求类的对象 NSURLRequest *request = [NSURLRequest requestWithURL:url]; // 4、開始去请求网络、数据(同步) 返回data [NSURLConnection sendAsynchronousRequest:request queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) { // 5、系统自带json解析 NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:(NSJSONReadingMutableContainers) error:nil]; NSArray *array = dict[@"news"]; self.newsArray = [NSMutableArray array]; for (NSDictionary *smallDict in array) { NewsModal *modal = [[NewsModal alloc] init]; [modal setValuesForKeysWithDictionary:smallDict]; [self.newsArray addObject:modal]; } for (NewsModal *modal in self.newsArray) { NSLog(@"%@", modal.title); } }]; }