iOS_GET_网络请求

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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、如果网址有汉字需要转换(没有汉字也可以写)    urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];    // 3、根据字符串创建 url(统一资源定位符)    NSURL *url = [NSURL URLWithString:urlString];    // 4、根据 url 创建 request 请求类的对象    NSURLRequest *request = [NSURLRequest requestWithURL:url];    // 5、开始去请求网络、数据(同步) 返回data    NSData *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、根据字符串创建 URL(统一资源定位符)    NSURL *url = [NSURL URLWithString:urlString];    // 3、根据 url 创建 request 请求类的对象    NSURLRequest *request = [NSURLRequest requestWithURL:url];    // 4、开始去请求网络、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);        }    }];}

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