iOS开发 AFNetworking2.5的使用

官方下载地址： https://github.com/AFNetworking/AFNetworking

此文章是基于AFNetworking2.5版本的，需要看AFNetworking2.0版本的请看上一篇文章：AFNetworking2.0使用

1.检测网络状态

 + (void)netWorkStatus
 {
     /**
      AFNetworkReachabilityStatusUnknown          = -1,  // 未知
      AFNetworkReachabilityStatusNotReachable     = 0,   // 无连接
      AFNetworkReachabilityStatusReachableViaWWAN = 1,   // 蜂窝网 2G、3G、4G
      AFNetworkReachabilityStatusReachableViaWiFi = 2,   // WiFi
      */
     // 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(@"%ld", status);
     }];
 }

2. JSON 方式获取数据

 + (void)JSONDataWithUrl:(NSString *)url success:(void (^)(id json))success fail:(void (^)())fail;
 {
     AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

     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:url parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
         if (success) {
             success(responseObject);
         }
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"%@", error);
         if (fail) {
             fail();
         }
     }];
 }

3.xml方式获取数据

 + (void)XMLDataWithUrl:(NSString *)urlStr success:(void (^)(id xml))success fail:(void (^)())fail
 {
     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:urlStr parameters:dict success:^(AFHTTPRequestOperation *operation, id responseObject) {
         if (success) {
             success(responseObject);
         }

     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"%@", error);
         if (fail) {
             fail();
         }
     }];
 }

4.post提交json数据

 + (void)postJSONWithUrl:(NSString *)urlStr parameters:(id)parameters success:(void (^)(id responseObject))success fail:(void (^)())fail
 {
     AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
     // 设置请求格式
     manager.requestSerializer = [AFJSONRequestSerializer serializer];
     // 设置返回格式
     manager.responseSerializer = [AFHTTPResponseSerializer serializer];
     [manager POST:urlStr parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
 //        NSString *result = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
         if (success) {
             success(responseObject);
         }
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"%@", error);
         if (fail) {
             fail();
         }
     }];

 }

5.下载文件

 + (void)sessionDownloadWithUrl:(NSString *)urlStr success:(void (^)(NSURL *fileURL))success fail:(void (^)())fail
 {
     NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
     AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:config];

     NSString *urlString = [urlStr 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);
         if (success) {
             success(fileURL);
         }

         return fileURL;
     } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
         NSLog(@"%@ %@", filePath, error);
         if (fail) {
             fail();
         }
     }];

     [task resume];
 }

6.文件上传－自定义上传文件名

 + (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL fileName:(NSString *)fileName fileType:(NSString *)fileTye success:(void (^)(id responseObject))success fail:(void (^)())fail
 {
     // 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];
     //@"http://localhost/demo/upload.php"
     [manager POST:urlStr 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]];

         //@"image/png"
         [formData appendPartWithFileURL:fileURL name:@"uploadFile" fileName:fileName mimeType:fileTye error:NULL];

     } success:^(AFHTTPRequestOperation *operation, id responseObject) {
         if (success) {
             success(responseObject);
         }
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         if (fail) {
             fail();
         }
     }];
 }

7.文件上传－随机生成文件名

 + (void)postUploadWithUrl:(NSString *)urlStr fileUrl:(NSURL *)fileURL success:(void (^)(id responseObject))success fail:(void (^)())fail
 {
     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:urlStr 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);
         if (success) {
             success(responseObject);
         }
     } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"错误 %@", error.localizedDescription);
         if (fail) {
             fail();
         }
     }];
 }