YMNetSessionManager.swift

import UIKit

enum HTTPRequestType {
    case GET
    case POST
}
class YMNetSessionManager: AFHTTPSessionManager {
    //单例
    static let shared:YMNetSessionManager = {
         //实例化对象
         let  instance = YMNetSessionManager()
         //设置响应反序列化支持的数据类型
         instance.responseSerializer.acceptableContentTypes?.insert("text/plain")
        
         return instance
    }()

    /// 封装GET和POST 请求
    ///
    ///   - Parameters:
    ///   - requestType: 请求方式
    ///   - urlString: urlString
    ///   - parameters: 字典参数
    ///   - completion: 回调
    func request(requestType: HTTPRequestType, urlString: String, parameters: [String: AnyObject]?, completion: @escaping (_ json:AnyObject?,_ isSuccess: Bool) -> ()) {
        
        //成功回调
        let success = { (task: URLSessionDataTask, json: Any)->() in
            print("请求成功")
            completion(json as AnyObject?,true)
        }
        
        //失败回调
        let failure = { (task: URLSessionDataTask?, error: Error) -> () in
            print("网络请求错误 \(error)")
            completion(nil,false)
        }
        
        if requestType == .GET {
            get(urlString, parameters: parameters, progress: nil, success: success, failure: failure)
        } else {
            post(urlString, parameters: parameters, progress: nil, success: success, failure: failure)
        }
    }

}

YMNetworkService.swift

import UIKit

class YMNetworkService: NSObject {
    //根据登录人获得其有权限的仓库
    class func getDepartByUserId(parameters:[String: AnyObject]?,urlString:String,completion: @escaping (_ json:AnyObject?,_ isSuccess: Bool) -> ()){
        //POST、GET请求方法
        YMNetSessionManager.shared.request(requestType: .POST, urlString: urlString, parameters: parameters, completion: completion)
    }
    
}