AFNetworking框架的簡單使用

• 實現Post請求

 NSString *strURL = @"http://xxx/WebService.php";
    NSURL *url = [NSURL URLWithString:strURL];
    
    //设置参数
    NSString *post = [NSString stringWithFormat:@"email=%@&type=%@&action=%@", @"xxx@xxx.com", @"JSON", @"query"];
    NSData *postData = [post dataUsingEncoding:NSUTF8StringEncoding];
    
    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
    [request setHTTPMethod:@"POST"];
    [request setHTTPBody:postData];

    NSURLSessionConfiguration *defaultConfig = [NSURLSessionConfiguration defaultSessionConfiguration];
//前面都和URLSESSION一樣,
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:defaultConfig];

    NSURLSessionDataTask *task = [manager dataTaskWithRequest:request completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
        NSLog(@"请求完成...");
        if (!error) {
            [self reloadView:responseObject];
        } else {
            NSLog(@"error : %@", error.localizedDescription);
        }
    }];

    [task resume];

• 請求下載

NSURLSessionDownloadTask *downloadTask = [manager downloadTaskWithRequest:request progress:^(NSProgress *downloadProgress) {
//下載進度
        NSLog(@"%@", [downloadProgress localizedDescription]);
        dispatch_async(dispatch_get_main_queue(), ^{
            [self.progressView setProgress:downloadProgress.fractionCompleted animated:TRUE];
        });

    } destination:^NSURL *(NSURL *targetPath, NSURLResponse *response) {
//存放文件
        NSString *downloadsDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, TRUE) objectAtIndex:0];
        NSString *downloadStrPath = [downloadsDir stringByAppendingPathComponent:[response suggestedFilename]];
        NSURL *downloadURLPath = [NSURL fileURLWithPath:downloadStrPath];

        return downloadURLPath;

    } completionHandler:^(NSURLResponse *response, NSURL *filePath, NSError *error) {
//下載完成更新UI組件
        NSLog(@"File downloaded to: %@", filePath);
        NSData *imgData = [[NSData alloc] initWithContentsOfURL:filePath];
        UIImage *img = [UIImage imageWithData:imgData];
        self.imageView1.image = img;

    }];

    [downloadTask resume];

• 請求上傳

    NSString *uploadStrURL = @"http://xxx/upload.php";
    NSDictionary *params = @{@"email" : @"xxx@xxx.com"};
    
    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"test2" ofType:@"jpg"];
    
    
    NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] multipartFormRequestWithMethod:@"POST"
                  URLString:uploadStrURL parameters:params
                  constructingBodyWithBlock:^(id <AFMultipartFormData> formData) {
                      [formData appendPartWithFileURL:[NSURL fileURLWithPath:filePath] name:@"file" fileName:@"1.jpg" mimeType:@"image/jpeg" error:nil];
                  } error:nil];
    
    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    NSURLSessionUploadTask *uploadTask;
    uploadTask = [manager uploadTaskWithStreamedRequest:request
                   progress:^(NSProgress *uploadProgress) {
                       NSLog(@"上传: %@", [uploadProgress localizedDescription]);
                       dispatch_async(dispatch_get_main_queue(), ^{
                           [self.progressView setProgress:uploadProgress.fractionCompleted];
                       });

                   }
                  completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
                      if (!error) {
                          NSLog(@"上传成功");
                          [self download];
                      } else {
                          NSLog(@"上传失败: %@", error.localizedDescription);
                      }
                  }];
    
    [uploadTask resume];