图片上传

base64

NSMutableDictionary *paraDic = [[NSMutableDictionary alloc]init];
[paraDic setObject:[@"data:img/jpg;base64," stringByAppendingString:[_imageData base64EncodedString]] forKey:@"data"];
[paraDic setObject:@"tmp" forKey:@"filename"];
[paraDic setObject:@(_imageData.length) forKey:@"size"];

文件

    NSData *data = UIImageJPEGRepresentation(image, 0.9);
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.responseSerializer = [AFJSONResponseSerializer serializer];
    [manager POST:@"https://sm.ms/api/upload" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        [formData appendPartWithFileData:data name:@"smfile" fileName:@"temp" mimeType:@"image/jpg"];
    } progress:^(NSProgress * _Nonnull uploadProgress) {
        NSLog(@"%f", uploadProgress.fractionCompleted);
    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
    }];