标签:网络请求
目前可能只是单纯的贴上了一些demo的代码,但是这些代码都是请求数据应该是最基础的使用方法吧,在项目的实际开发中可能用到系统的会非常少,一般都是采用别人非常成熟的第三方开源库来实现数据请求,目前常用的第三方网络请求主要是以下几个:<h3 style="margin: 18px 0px; padding: 0px 0px 5px; border: 0px; outline: 0px; font-size: 22px; vertical-align: baseline; color: rgb(51, 51, 51); line-height: 1em; font-weight: normal; font-family: 'Lucida Grande', 'Lucida Sans Unicode', Helvetica, Arial, Verdana, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">HTTP</h3><p style="margin-top: 0px; margin-bottom: 0px; padding-top: 0px; padding-bottom: 10px; border: 0px; outline: 0px; font-size: 14px; vertical-align: baseline; line-height: 26px; color: rgb(51, 51, 51); font-family: 'Lucida Grande', 'Lucida Sans Unicode', Helvetica, Arial, Verdana, sans-serif; background-image: initial; background-attachment: initial; background-size: initial; background-origin: initial; background-clip: initial; background-position: initial; background-repeat: initial;">相比较之下,<a target=_blank href="https://github.com/AFNetworking/AFNetworking" target="_blank" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; text-decoration: none; color: rgb(75, 182, 245); background: transparent;">AFNetworking</a>是目前最优秀的一个了:轻量、易用、使用者多、开发者有在积极维护。在AFN出现之前,这个角色是由<a target=_blank href="https://github.com/pokeb/asi-http-request" target="_blank" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; text-decoration: none; color: rgb(75, 182, 245); background: transparent;">ASIHTTPRequest</a>扮演的,只是到现在年久失修了。关于AFN和ASI的对比,这里有一篇不错的文章<a target=_blank href="http://www.infoq.com/cn/articles/afn_vs_asi" target="_blank" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; text-decoration: none; color: rgb(75, 182, 245); background: transparent;">http://www.infoq.com/cn/articles/afn_vs_asi</a>。除此之外,<a target=_blank href="https://github.com/MugunthKumar/MKNetworkKit" target="_blank" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; text-decoration: none; color: rgb(75, 182, 245); background: transparent;">MKNetworkKit</a>和<a target=_blank href="https://github.com/RestKit/RestKit" target="_blank" style="margin: 0px; padding: 0px; border: 0px; outline: 0px; vertical-align: baseline; text-decoration: none; color: rgb(75, 182, 245); background: transparent;">RestKit</a>也有一定的使用者。</p>
#pragma mark -- NetWorking methods // 分别是get的同步和异步 - (void)getHttpRequest { NSString *urlString = [NSString stringWithFormat:@"http://api.jiepang.com/v1/locations/search?lat=%f&lon=%f&source=100000&count=50",30.575413,104.064359]; NSURL *url = [NSURL URLWithString:urlString]; NSURLRequest *request = [NSURLRequest requestWithURL:url]; /* NSError *error = nil; // 这里是发布同步请求,同步请求会阻塞主线程,在请求未完成过程中程序是无法进行交互的 NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:&error]; if (error) { NSLog(@"request error reason '%@'",[error localizedDescription]); }else { //进行数据解析,这里是json解析采用的系统自带的 id objId = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; _weatherLabel.text = objId[@"result"][@"today"][@"weather"]; NSLog(@"%@",objId); } */ // 这里是通过代理来实现异步请求 需要实现其代理方法去获取数据 [NSURLConnection connectionWithRequest:request delegate:self]; } // post异步请求 - (void)postHttpRequest { NSURL *url = [NSURL URLWithString:OIL_PRICE]; // 对参数进行处理 NSMutableDictionary *params = [[NSMutableDictionary alloc]init]; [params setObject:@"5a43794d639815615b93fdfddcef3670" forKey:@"key"]; NSMutableString *mstring = [NSMutableString string]; for (NSString *key in [params allKeys]) { [mstring appendFormat:@"%@=%@",key,params[key]]; } // POST 请求需要可变的URLRequest NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url]; request.HTTPBody = [mstring dataUsingEncoding:NSUTF8StringEncoding]; // 请求参数进行编码 request.HTTPMethod = @"POST"; // 请求方式 request.timeoutInterval = 10;//请求超时时间 [NSURLConnection connectionWithRequest:request delegate:self]; }
<pre name="code" class="objc">#pragma mark -- <NSURLConnectionDelegate> // 请求完毕调用此方法 - (void)connectionDidFinishLoading:(NSURLConnection *)connection { NSError *error = nil; id objID = [NSJSONSerialization JSONObjectWithData:_receiveData options:NSJSONReadingMutableLeaves error:&error]; if (error) { NSLog(@"reciveData error reason : '%@'.",[error localizedDescription]); }else { _dataSource = [objID[@"items"] mutableCopy]; [_tableView reloadData]; } } // 数据流接收方法 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data { // 接受数据 [_receiveData appendData:data]; }
ios之NSURLConnection网络请求数据/GET与POST方法
标签:网络请求
原文地址:http://blog.csdn.net/mr_rog/article/details/42040775