swift 中使用 Alamofire+Moya+ObjectMapper，并做了一些功能封装

项目开发中的接口比较多，在使用 moya 时会使用多个类，为避免一些代买的重复书写，做了一些封装处理，网络使用 Alamofire，数据解析使用 Moya-ObjectMapper

没有什么太多的理论，都在代码里了（方便复制）

• 首先是对返回数据统一处理的模型

import ObjectMapper
import Moya

///具体问题具体分析,应根据接口实际返回数据结构来定
class ResponseModel: NSObject,Mappable {
    
    /// 返回码
    var code:Int = 0
    /// 信息
    var message:String = ""
    /// 数据
    var data:Any?
    
    override init() {super.init()}
    
    init(_ code: Int, message:String, data:Any? = nil) {
        self.code = code
        self.message = message
        self.data = data
    }
    
    class func success(_ data:Any) ->ResponseModel{
        return ResponseModel(200, message: "SUCCESS", data: data)
    }
    
    class func faild(_ message:String? = "FAILD") ->ResponseModel{
        return ResponseModel(400, message: message ?? "FAILD", data: nil)
    }
    
    required init?(map: Map) {}
    
    //若接口返回的是msg，则应当这么写message <- map["msg"],或则直接将属性message修改为msg，然后msg <- map["msg"]
    func mapping(map: Map) {
        code <- map["code"]
        message <- map["message"]
        data <- map["data"]
    }
}

• 然后是对返回数据的统一 处理工具

import Moya

class NetWorkManager {
    
    /// 处理成功的返回结果
    static func getResponse(_ success:Moya.Response) ->ResponseModel {
        var responseModel:ResponseModel = ResponseModel()
        do {
            responseModel =  try success.mapObject(ResponseModel.self)
            //这里得注意下，有时候后台返回的数据类型无法解析，就得做其他特殊处理
            //之前遇到过，由于数据返回的编码方式不同，导致无法解析，我便使用了下面的方法
//            let cfEnc = CFStringEncodings.GB_18030_2000//具体问题具体分析哈
//            let enc = CFStringConvertEncodingToNSStringEncoding(CFStringEncoding(cfEnc.rawValue))
//            if let str = String(data: success.data, encoding: String.Encoding(rawValue: enc)), let obj = str.data(using: .utf8), let dic = try JSONSerialization.jsonObject(with: obj, options: .mutableContainers) as? [String: Any],let res = ResponseModel(JSON: dic) {
//                responseModel = res
//            }else{
//                responseModel.code = 400
//                responseModel.message = "无法解析网络数据"
//            }
        }catch{
            // 对无法解析情况的处理，可以根据自己项目来定
            responseModel.code = 400
            responseModel.message = "无法解析网络返回数据"
        }
        //TODO: 根据各自业务需求，可对一些返回结果做出特殊处理
        if responseModel.code == 200 ,responseModel.message == "SUCCESS",responseModel.data == nil {
            responseModel.message = "没有更多了"
        }
        return responseModel
    }
    
    /// 处理失败的返回结果
    static func getResponse(_ error:MoyaError) ->ResponseModel {
        let responseModel:ResponseModel = ResponseModel()
        responseModel.code = 500
        responseModel.message = error.errorDescription ?? "网络访问出错"
        return responseModel
    }

    /// 获取请求头
    ///
    /// - Parameter token: 是否包含token
    /// - Returns: <#return value description#>
    static func getHeaders(_ token:Bool = true) ->[String:String] {
        var result:[String:String] = ["Content-type" : "application/json"]
        if token {
            result["Token"] = "这里写用户的token"
        }
        result["其他key"] = "key对应的value"
        return result
    }
}

• 再对 MoyaProvider 进行扩展 

import Moya
import Alamofire

extension MoyaProvider {
    
    static func custom(
        endpointClosure: @escaping Moya.MoyaProvider<Target>.EndpointClosure = HZJMoyaTool<Target>.endpointClosure,
        requestClosure: @escaping Moya.MoyaProvider<Target>.RequestClosure = HZJMoyaTool<Target>.requestResultClosure,
        stubClosure: @escaping Moya.MoyaProvider<Target>.StubClosure = HZJMoyaTool<Target>.stubClosure,
        callbackQueue: DispatchQueue? = nil,
        session: Moya.Session = HZJMoyaTool<Target>.session(),
        plugins: [Moya.PluginType] = HZJMoyaTool<Target>.authPlugins(),
        trackInflights: Bool = false) -> MoyaProvider{
        return MoyaProvider.init(endpointClosure: endpointClosure, requestClosure: requestClosure, stubClosure: stubClosure, callbackQueue: callbackQueue, session: session, plugins: plugins, trackInflights: trackInflights)
    }

    func hzj_Request(_ target: Target, callbackQueue: DispatchQueue? = .none, progress: ProgressBlock? = .none, finishBlock:@escaping ((ResponseModel)->Void)) {
        self.request(target, callbackQueue: callbackQueue, progress: progress) { (result) in
            switch result {
            case let .success(response):
                finishBlock(NetWorkManager.getResponse(response))
            case let .failure(error):
                finishBlock(NetWorkManager.getResponse(error))
            }
        }
    }
}

• 其中的 HZJMoyaTool 类，其中的具体内容，大家应根据自己的项目而定 

 

struct HZJMoyaTool<Target: TargetType> {
    
    static func endpointClosure(for target: Target) -> Endpoint {
        let url = target.baseURL.appendingPathComponent(target.path).absoluteString
        let endpoint = Endpoint(url: url, sampleResponseClosure: {.networkResponse(200,target.sampleData)}, method: target.method, task: target.task, httpHeaderFields: target.headers)
//            endpoint.adding(newHTTPHeaderFields:["Content-Type" : "application/x-www-form-urlencoded","ECP-COOKIE" : ""])
        return endpoint
    }
    
    static func requestResultClosure(for endpoint: Endpoint, closure: MoyaProvider<Target>.RequestResultClosure) {
        do {
            var urlRequest = try endpoint.urlRequest()
            urlRequest.timeoutInterval = 60//设置网络超时时间
//            urlRequest.cachePolicy = .returnCacheDataElseLoad
            closure(.success(urlRequest))
        } catch MoyaError.requestMapping(let url) {
            closure(.failure(MoyaError.requestMapping(url)))
        } catch MoyaError.parameterEncoding(let error) {
            closure(.failure(MoyaError.parameterEncoding(error)))
        } catch {
            closure(.failure(MoyaError.underlying(error, nil)))
        }
    }
    
    static func stubClosure(_: Target) -> Moya.StubBehavior {
//        return Moya.StubBehavior.immediate//使用sampleData中返回的测试数据
        return Moya.StubBehavior.never
    }
    
    static func session() -> Session {
        let defaultSession = MoyaProvider<Target>.defaultAlamofireSession()
//        let configuration = URLSessionConfiguration.default
//        configuration.headers = defaultSession.sessionConfiguration.headers
//        configuration.httpAdditionalHeaders = defaultSession.sessionConfiguration.httpAdditionalHeaders
        let configuration = defaultSession.sessionConfiguration
        if let path: String = Bundle.main.path(forResource: "xxx", ofType: "cer") {
            ///添加证书
            do {
                let certificationData = try Data(contentsOf: URL(fileURLWithPath: path)) as CFData
                if let certificate = SecCertificateCreateWithData(nil, certificationData){
                    let certificates: [SecCertificate] = [certificate]
                    let policies: [String: ServerTrustEvaluating] = ["domain": PinnedCertificatesTrustEvaluator(certificates: certificates, acceptSelfSignedCertificates: true, performDefaultValidation: true, validateHost: true)]
                    let manager = ServerTrustManager(allHostsMustBeEvaluated: false, evaluators: policies)
                    return Session(configuration: configuration, serverTrustManager: manager)
                }
            } catch {
                return Session(configuration: configuration)
            }
        }
        return Session(configuration: configuration)
    }
    
    static func authPlugins() -> [Moya.PluginType] {
        return []
//        return [AccessTokenPlugin{_ in User.shared.token}]
    }
}

• 最后再举个使用例子吧  

import Moya

let LoginLogManager = MoyaProvider<LoginLogAPI>.custom()

enum LoginLogAPI {
    ///添加登录日志(type:0-web 1-app)
    case addLoginLog(type:Int)
    ///子模块，将部分接口抽离出去
    case childApi(child:ChildAPI)
}

extension LoginLogAPI:TargetType {
    var baseURL: URL {
        switch self {
        case . childApi(child: let child):
            return child.baseURL
        default:
            return URL(string: AppRootApi + "/api/appHtLoginLog/")!
        }
    }
    
    var path: String {
        switch self {
        case . childApi(child: let child):
            return child.path
        case .addLoginLog(type: _):
            return "addLoginLog"
        }
    }
    
    var method: Moya.Method {
        switch self {
        case . childApi(child: let child):
            return child.method
        default:
            return .post
        }
    }
    
    var sampleData: Data {
        switch self {
        case . childApi(child: let child):
            return child.sampleData
        default:
            return "{sampleDataKey:sampleDataValue}".data(using: String.Encoding.utf8)!
        }
    }
    
    var task: Task {
        var params:[String:Any] = [:]
        switch self {
        case . childApi(child: let child):
            return child.task
        case .addLoginLog(type: let type):
            params["type"] = type
            return .requestCompositeParameters(bodyParameters: [:], bodyEncoding: URLEncoding.httpBody, urlParameters: params)
        }
    }
    
    var headers: [String : String]? {
        switch self {
        case . childApi(child: let child):
            return child.headers
        default:
            return NetWorkManager.getHeaders(true)
        }
    }
}

当模块中接口较多时，或者部分接口需要统一特殊处理时，可以将部分接口抽出来，使用子模块

///子模块
enum ChildAPI {
    case refreshInfo(name:String)
}

extension ChildAPI:TargetType {
    var baseURL: URL {
        return URL(string: AppRootApi + "/api/appHtLoginLog/")!
    }
    
    var path: String {
        switch self {
        case .refreshInfo(name: _):
            return "refreshInfo"
        }
    }
    
    var method: Moya.Method {
        switch self {
        default:
            return .post
        }
    }
    
    var sampleData: Data {
        return "{sampleDataKey:sampleDataValue}".data(using: String.Encoding.utf8)!
    }
    
    var task: Task {
        var params:[String:Any] = [:]
        switch self {
        case .refreshInfo(name: let name):
            params["name"] = name
            return .requestParameters(parameters: params, encoding: JSONEncoding.default)
        }
    }
    
    var headers: [String : String]? {
        switch self {
        default:
            return NetWorkManager.getHeaders(false)
        }
    }
}

• 使用接口就这样

func test() {
        LoginLogManager.hzj_Request(.addLoginLog(type: 1)) { [weak self](responseModel) in
            guard let strongSelf = self else { return }
            if responseModel.code == 200 {
                print("成功")
            }else{
                print("失败")
            }
        }
    }

    func test2() {
        LoginLogManager.hzj_Request(.childApi(.refreshInfo(name: "test"))) { [weak self](responseModel) in
            guard let strongSelf = self else { return }
            if responseModel.code == 200 {
                print("成功")
            }else{
                print("失败")
            }
        }
    }

 大概就这样，以上都是一些统一的处理，若要有一些特殊的接口，大家就只用自己弄了