Swift3.0 Alamofire网络请求的封装（get,post,upload图片上传）转

转自: http://blog.csdn.net/C_calary/article/details/53193747

学习Swift 试着动手写个天气小app,搜集资料这个封装还蛮好用的.

我用的第三方的版本是这样的:

pod 'Alamofire', '~> 4.2.0'

pod 'SwiftyJSON', '~> 3.1.3'

import Foundation
import UIKit
import Alamofire
import SwiftyJSON

private let NetworkRequestShareInstance = NetworkRequest()

class NetworkRequest {
    class var sharedInstance : NetworkRequest {
        return NetworkRequestShareInstance
    }
}
extension NetworkRequest {
    //MARK: - GET 请求
    //    let tools : NetworkRequest.shareInstance!

    func getRequest(urlString: String, params : [String : Any], success : @escaping (_ response : [String : AnyObject])->(), failture : @escaping (_ error : Error)->()) {

        //使用Alamofire进行网络请求时，调用该方法的参数都是通过getRequest(urlString， params, success :, failture :）传入的，而success传入的其实是一个接受           [String : AnyObject]类型 返回void类型的函数

        Alamofire.request(urlString, method: .get, parameters: params)
            .responseJSON { (response) in/*这里使用了闭包*/
                //当请求后response是我们自定义的，这个变量用于接受服务器响应的信息
                //使用switch判断请求是否成功，也就是response的result
                switch response.result {
                case .success(let value):
                    //当响应成功是，使用临时变量value接受服务器返回的信息并判断是否为[String: AnyObject]类型 如果是那么将其传给其定义方法中的success
//                    if let value = response.result.value as? [String: AnyObject] {
                        success(value as! [String : AnyObject])
//                    }
                    let json = JSON(value)
                    PrintLog(json)

                case .failure(let error):
                    failture(error)
                    print("error:(error)")
                }
        }

    }
    //MARK: - POST 请求
    func postRequest(urlString : String, params : [String : Any], success : @escaping (_ response : [String : AnyObject])->(), failture : @escaping (_ error : Error)->()) {

        Alamofire.request(urlString, method: HTTPMethod.post, parameters: params).responseJSON { (response) in
            switch response.result{
            case .success:
                if let value = response.result.value as? [String: AnyObject] {
                    success(value)
                    let json = JSON(value)
                    PrintLog(json)
                }
            case .failure(let error):
                failture(error)
                PrintLog("error:(error)")
            }

            }
        }

    //MARK: - 照片上传
    ///
    /// - Parameters:
    ///   - urlString: 服务器地址
    ///   - params: ["flag":"","userId":""] - flag,userId 为必传参数
    ///        flag - 666 信息上传多张  －999 服务单上传  －000 头像上传
    ///   - data: image转换成Data
    ///   - name: fileName
    ///   - success:
    ///   - failture:
    func upLoadImageRequest(urlString : String, params:[String:String], data: [Data], name: [String],success : @escaping (_ response : [String : AnyObject])->(), failture : @escaping (_ error : Error)->()){

        let headers = ["content-type":"multipart/form-data"]

        Alamofire.upload(
            multipartFormData: { multipartFormData in
                //666多张图片上传
                let flag = params["flag"]
                let userId = params["userId"]

                multipartFormData.append((flag?.data(using: String.Encoding.utf8)!)!, withName: "flag")
                multipartFormData.append( (userId?.data(using: String.Encoding.utf8)!)!, withName: "userId")

                for i in 0..<data.count {
                    multipartFormData.append(data[i], withName: "appPhoto", fileName: name[i], mimeType: "image/png")
                }
        },
            to: urlString,
            headers: headers,
            encodingCompletion: { encodingResult in
                switch encodingResult {
                case .success(let upload, _, _):
                    upload.responseJSON { response in
                        if let value = response.result.value as? [String: AnyObject]{
                            success(value)
                            let json = JSON(value)
                            PrintLog(json)
                        }
                    }
                case .failure(let encodingError):
                    PrintLog(encodingError)
                    failture(encodingError)
                }
        }
        )
    }
}

调用的方法也很简单的,闭包传值:

以下的接口是可以正常用的

 NetWorkWeather.sharedInstance.getRequest(urlString: "http://op.juhe.cn/onebox/weather/query", params: ["cityname":"杭州","key":"f6418f1f819c801a60ea7880ca844587"], success: {(json) -> Void in
        
            print(json)
            
        }, failture: {(error) -> Void in
            print(error)
        })