AFNetwork 作用和用法详解

来源：互联网发布：博时大数据100好买编辑：程序博客网时间：2024/06/13 19:33

<h1 id="codeintro" style="margin: 30px 0px 0px; padding: 0px; border: 0px; width: 728px; font-size: 13px; line-height: 20px; font-family: 'Helvetica Neue', 'Luxi Sans', 'DejaVu Sans', Tahoma, 'Hiragino Sans GB', STHeiti;"><span style="color: rgb(153, 0, 0);">AFNetworking是一个轻量级的iOS网络通信类库</span><span style="font-weight: normal; color: rgb(44, 62, 80);">。它</span><span style="color: rgb(153, 0, 0);">建立在NSURLConnection和NSOperation等类库</span><span style="color: rgb(44, 62, 80); font-weight: normal;">的基础上，让很多网络通信功能的实现变得十分简单。它支持HTTP请求和基于REST的网络服务（包括GET、POST、 PUT、DELETE等）。支持ARC。</span></h1><div><span style="color: rgb(44, 62, 80); font-weight: normal;"></span></div><div><span style="font-family: Arial; font-size: 14px; color: rgb(44, 62, 80);"></span><span style="font-family: Arial; font-size: 14px;"></span></div>

<h1 id="codeintro" style="margin: 30px 0px 0px; padding: 0px; border: 0px; width: 728px; font-size: 13px; line-height: 20px; font-family: 'Helvetica Neue', 'Luxi Sans', 'DejaVu Sans', Tahoma, 'Hiragino Sans GB', STHeiti;"><span style="color: rgb(153, 0, 0);">转自：<a target=_blank target="_blank" href="http://www.maxiaoguo.com/clothes/269.html" style="color: rgb(202, 0, 0); text-decoration: none;">http://www.maxiaoguo.com/clothes/269.html</a></span></h1>

#import "MJViewController.h"  #import "AFNetworking.h"    @interface MJViewController ()    @end    @implementation MJViewController  /**  要使用常规的AFN网络访问    1. AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];       所有的网络请求,均有manager发起    2. 需要注意的是,默认提交请求的数据是二进制的,返回格式是JSON       1> 如果提交数据是JSON的,需要将请求格式设置为AFJSONRequestSerializer     2> 如果返回格式不是JSON的,    3. 请求格式        AFHTTPRequestSerializer            二进制格式      AFJSONRequestSerializer            JSON      AFPropertyListRequestSerializer    PList(是一种特殊的XML,解析起来相对容易)    4. 返回格式        AFHTTPResponseSerializer           二进制格式      AFJSONResponseSerializer           JSON      AFXMLParserResponseSerializer      XML,只能返回XMLParser,还需要自己通过代理方法解析      AFXMLDocumentResponseSerializer (Mac OS X)      AFPropertyListResponseSerializer   PList      AFImageResponseSerializer          Image      AFCompoundResponseSerializer       组合  */    - (void)viewDidLoad  {      [super viewDidLoad];            [self reach];  }    #pragma mark - 演练  #pragma mark - 检测网络连接  - (void)reach  {      /**      AFNetworkReachabilityStatusUnknown          = -1,  // 未知      AFNetworkReachabilityStatusNotReachable     = 0,   // 无连接      AFNetworkReachabilityStatusReachableViaWWAN = 1,   // 3G 花钱      AFNetworkReachabilityStatusReachableViaWiFi = 2,   // 局域网络,不花钱      */      // 如果要检测网络状态的变化,必须用检测管理器的单例的startMonitoring      [[AFNetworkReachabilityManager sharedManager] startMonitoring];            // 检测网络连接的单例,网络变化时的回调方法      [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {          NSLog(@"%d", status);      }];  }    #pragma mark - Session 下载  - (void)sessionDownload  {      NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];      AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];            NSString *urlString = @"http://localhost/itcast/videos/01.C语言-语法预览.mp4";      urlString = [urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];            NSURL *url = [NSURL URLWithString:urlString];      NSURLRequest *request = [NSURLRequest requestWithURL:url];            NSURLSessionDownloadTask *task = [manager downloadTaskWithRequest:request progress:nil destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {          // 指定下载文件保存的路径  //        NSLog(@"%@ %@", targetPath, response.suggestedFilename);          // 将下载文件保存在缓存路径中          NSString *cacheDir = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];          NSString *path = [cacheDir stringByAppendingPathComponent:response.suggestedFilename];                    // URLWithString返回的是网络的URL,如果使用本地URL,需要注意          NSURL *fileURL1 = [NSURL URLWithString:path];          NSURL *fileURL = [NSURL fileURLWithPath:path];                    NSLog(@"== %@ |||| %@", fileURL1, fileURL);                    return fileURL;      } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {          NSLog(@"%@ %@", filePath, error);      }];            [task resume];  }    #pragma mark - POST JSON  - (void)postJSON  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];            NSDictionary *dict = @{@"name": @"zhangsan"};      NSDictionary *dict1 = @{@"name": @"wangwu"};      NSArray *array = @[dict, dict1];      // 设置请求格式      manager.requestSerializer = [AFJSONRequestSerializer serializer];      // 设置返回格式      manager.responseSerializer = [AFHTTPResponseSerializer serializer];            [manager POST:@"http://localhost/postjson.php" parameters:array success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];                    NSLog(@"%@", result);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {                }];        }    #pragma mark - 随机文件名上传  - (void)postUpload1  {      // 本地上传给服务器时,没有确定的URL,不好用MD5的方式处理      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];      manager.responseSerializer = [AFHTTPResponseSerializer serializer];            [manager POST:@"http://localhost/demo/upload.php" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {                    NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];                    // 要上传保存在服务器中的名称          // 使用时间来作为文件名 2014-04-30 14:20:57.png          // 让不同的用户信息,保存在不同目录中          NSDateFormatter *formatter = [[NSDateFormatter alloc] init];          // 设置日期格式          formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";          NSString *fileName = [formatter stringFromDate:[NSDate date]];                    [formData appendPartWithFileURL:fileURL name:@"uploadFile" fileName:fileName mimeType:@"image/png" error:NULL];                } success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSLog(@"OK");      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"error");      }];  }    #pragma mark - POST上传  - (void)postUpload  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];      // AFHTTPResponseSerializer就是正常的HTTP请求响应结果:NSData      // 当请求的返回数据不是JSON,XML,PList,UIImage之外,使用AFHTTPResponseSerializer      // 例如返回一个html,text...      //      // 实际上就是AFN没有对响应数据做任何处理的情况      manager.responseSerializer = [AFHTTPResponseSerializer serializer];            // formData是遵守了AFMultipartFormData的对象      [manager POST:@"http://localhost/demo/upload.php" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {                    // 将本地的文件上传至服务器          NSURL *fileURL = [[NSBundle mainBundle] URLForResource:@"头像1.png" withExtension:nil];                    [formData appendPartWithFileURL:fileURL name:@"uploadFile" error:NULL];      } success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];                    NSLog(@"完成 %@", result);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"错误 %@", error.localizedDescription);      }];  }    #pragma mark - JSON  - (void)XMLData  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];            // 返回的数据格式是XML      manager.responseSerializer = [AFXMLParserResponseSerializer serializer];            NSDictionary *dict = @{@"format": @"xml"};            // 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情      [manager GET:@"http://localhost/videos.php" parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {                    // 如果结果是XML,同样需要使用6个代理方法解析,或者使用第三方库          // 第三方库第三方框架,效率低,内存泄漏          NSLog(@"%@", responseObject);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"%@", error);      }];  }    #pragma mark - JSON  - (void)JSONData  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];            // 原本需要拼接get访问URL ? & =      NSDictionary *dict = @{@"format": @"json"};            // 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情      [manager GET:@"http://localhost/videos.php" parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSLog(@"%@", responseObject);          // 提问:NSURLConnection异步方法回调,是在子线程          // 得到回调之后,通常更新UI,是在主线程          NSLog(@"%@", [NSThread currentThread]);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"%@", error);      }];  }    #pragma mark - POST登录  - (void)postLogin  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];            // 原本需要拼接get访问URL ? & =      NSDictionary *dict = @{@"username": @"wangwu", @"password" : @"wang"};            // 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情      [manager POST:@"http://localhost/login.php" parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSLog(@"%@", responseObject);          // 提问:NSURLConnection异步方法回调,是在子线程          // 得到回调之后,通常更新UI,是在主线程          NSLog(@"%@", [NSThread currentThread]);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"%@", error);      }];  }    #pragma mark - GET登录  - (void)getLogin  {      AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];            // 原本需要拼接get访问URL ? & =      NSDictionary *dict = @{@"username": @"wangwu", @"password" : @"wang"};            // 网络访问是异步的,回调是主线程的,因此程序员不用管在主线程更新UI的事情      [manager GET:@"http://localhost/login.php" parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSLog(@"%@", responseObject);          // 提问:NSURLConnection异步方法回调,是在子线程          // 得到回调之后,通常更新UI,是在主线程          NSLog(@"%@", [NSThread currentThread]);      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          NSLog(@"%@", error);      }];  }    @end

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