AFNetwork上传图片

gistfile1

AFHTTPRequestOperation * operation = [_AFManager POST:[_baseURL stringByAppendingString:MCSetavatarInterface] parameters:dic constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        [formData appendPartWithFileURL:[dic objectForKey:@"url"] name:@"avatar" error:nil];
        
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
        
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    }];