AFNetworking3.xPost请求- “请求对象无法序列化”处理及：App Transport Security has blocked a cleartext HTTP (http://)

问题： 使用AFNetworking 时请求后提示：App Transport Security has blocked a cleartext HTTP (http://) resource load since it is insecure. Temporary exceptions can be configured via your app's Info.plist
file.

解决： 解决的方法很简单，在info.plist中添加 App Transport Security Settings（dictionary）在该字典中添加 Allow Arbitrary Loads（BOOL）（值设置成YES）这样解决了。

AFNetworking两个post请求方法

问题：使用方法：

- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
parameters:(nullable id)parameters
constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
progress:(nullable void (^)(NSProgress *uploadProgress))uploadProgress
success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;

后台返回的结果是 “请求对象无法序列化”，URL，parameters，这两个请求参数不变。

解决：使用以下方法请求就成功了

- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
parameters:(nullable id)parameters
progress:(nullable void (^)(NSProgress *uploadProgress))uploadProgress
success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;