ios开发之--swift下AFNetworking的使用

import UIKit
import AFNetworking

//枚举定义请求方法
enum HTTPRequestType{
case GET
case POST
}

class AFNetTools: AFHTTPSessionManager {

//单例类
static let shareInstance : AFNetTools = {
let toolInstance = AFNetTools()
toolInstance.responseSerializer.acceptableContentTypes?.insert("text/html")
return toolInstance
}()

/// 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 (AnyObject?) -> ()) {

//成功回调
let success = { (task: URLSessionDataTask, json: Any)->() in
completion(json as AnyObject?)
}

//失败回调
let failure = { (task: URLSessionDataTask?, error: Error) -> () in
print("网络请求错误 \(error)")
completion(nil)
}

if requestType == .GET {
get(urlString, parameters: parameters, progress: nil, success: success, failure: failure)
} else {
post(urlString, parameters: parameters, progress: nil, success: success, failure: failure)
}
}

// 将成功和失败的回调分别写在两个逃逸闭包中
func request(requestType : HTTPRequestType, url : String, parameters : [String : Any], succeed : @escaping([String : Any]?) -> (), failure : @escaping(Error?) -> ()) {

// 成功闭包
let successBlock = { (task: URLSessionDataTask, responseObj: Any?) in
succeed(responseObj as? [String : Any])
}

// 失败的闭包
let failureBlock = { (task: URLSessionDataTask?, error: Error) in
failure(error)
}

// Get 请求
if requestType == .GET {
get(url, parameters: parameters, progress: nil, success: successBlock, failure: failureBlock)
}

// Post 请求
if requestType == .POST {
post(url, parameters: parameters, progress: nil, success: successBlock, failure: failureBlock)
}
}

}

@IBAction func startRequest(_ sender: Any) {

let paramerts = [
"opt_type": 1,
"size" : 50,
"offset" : 50
]

AFNetTools.shareInstance.request(requestType: .GET, url: "http://apiv2.yangkeduo.com/operation/15/groups", parameters: paramerts, succeed: { (response) in
guard let dicArray = response?["goods_list"] as? [[String: Any]] else {
return
}
print(dicArray)

}) { (error) in
guard let error = error else {
return
}
print(error)
}

}