iOS AFNetworking 用法

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

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

检测网络连接

#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);  
    }];  
} 

下载

#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];  
}  

POST请求 JSON数据

- (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) {  
          
    }];  
      
}  

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");  
    }];  
}  

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);  
    }];  
} 

GET请求 XML数据

- (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);  
    }];  
}  

GET请求JSON数据

- (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);  
    }];  
}  

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);  
    }];  
}  

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);  
    }];  
}