使用 Alamofire 和 SwiftyJSON 发布对象数组

Question

我有一系列字典，我试图在 SwiftyJSON 的帮助下将它们发布到 Alamofire。

api设置为：

[
    {
        "imageUrl": "someimage3.jpg"
    },
    {
        "imageUrl": "someimage4.jpg"
    }
]

打印出来的带有图像对象的数组看起来像这样，带有 imageUrl 键和值的图像名称。

uploadedFiles = [
    [imageUrl: "someimage.jpg"],
    [imageUrl: "someimage2.jpg"]
]

我正在尝试将字典数组转换为正文所需的格式。我不太确定如何让它们成为 [String: AnyObject]

var body: [String: AnyObject] = [:]
let paramsJSON = JSON(uploadedFiles)
body = paramsJSON

alamofire 帖子

Alamofire.request("\(BASE_URL)mainimages/\(someid)", method: .post, parameters: body, encoding: JSONEncoding.default, headers: header).responseString { (response) in
        if response.result.error == nil {
            let status = response.response?.statusCode
            completion(true, status)
        } else {
            completion(false, nil)
            debugPrint(response.result.error as Any)
        }
    }

Answer 1

你可以用这个方法实现，它对我有用。

let payload = [["eventName": "Notifications","body":["version": "1.0","latitude": lat,"longitude":lon]]] as [[String : AnyObject]]

trackEventRequest(requestParams: payload, urlString: "https://xyz/youyURL")





func trackEventRequest(requestParams: [[String: AnyObject]], urlString: String) {

        let url = URL(string: urlString)
        var request = URLRequest(url: url!)
        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
        request.httpMethod = "POST"
        request.httpBody = try! JSONSerialization.data(withJSONObject: requestParams, options: [])

        Alamofire.request(reqeust).responseJSON { (response) in
            switch response.result {
            case .success:
                print(response.result.value)
                break
            case .failure:
                print(response.error)
                break
            }
        }
    }

Answer 2

我按照 Mani 的建议重新格式化了我的 API，以便更轻松地为 Alamofire 提供所需的内容。它现在正在寻找这个：

{
    "allImages" : [
        {
            "imageUrl": "someimage5.jpg"
        },
        {
            "imageUrl": "someimage6.jpg"
        }
    ]
}

我还必须像下面的代码一样重新格式化我的数组，以消除 JSON 错误。

var newUploadFilesArray = [AnyObject]()
    for item in uploadedFiles {
        let singleImageDict = ["imageUrl" : item.imageUrl]
        newUploadFilesArray.append(singleImageDict as AnyObject)
    }

    let body: [String: AnyObject] = [
        "allImages": newUploadFilesArray as AnyObject
    ]

    Alamofire.request("\(BASE_URL)mainimages/\(mainId)", method: .post, parameters: body, encoding: JSONEncoding.default, headers: header).responseString { (response) in
        if response.result.error == nil {
            let status = response.response?.statusCode
            completion(true, status)
        } else {
            completion(false, nil)
            debugPrint(response.result.error as Any)
        }
    }

Answer 3

API 似乎采用具有数组作为顶层的 JSON，而不是字典，因此将数组转换为字典是不正确的。

只需传入一个数组！

SwiftyJSON 的 JSON 符合 ExpressibleByArrayLiteral，所以你可以只使用数组字面量：

let paramsJSON: JSON = [
    ["imageUrl": "someimage.jpg"],
    ["imageUrl": "someimage2.jpg"]
]

编辑：我刚刚意识到 Alamofire 的 request 方法只接受 [String: AnyObject]。这意味着你需要自己做参数编码，演示here。

或者，创建您自己的URLRequest，如post 所示：

var request = URLRequest(url: someURL)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.httpBody = paramsJSON.rawData()
Alamofire.request(request)

Answer 4

您可以通过构建手动请求并调用Alamofire.request 来完成此操作，如下所示

var request = URLRequest(url: .......))
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Accept")

//parameter array

let uploadedFiles = [
   [imageUrl: "someimage.jpg"],
   [imageUrl: "someimage2.jpg"]
]

request.httpBody = try! JSONSerialization.data(withJSONObject: uploadedFiles)

Alamofire.request(request).responseJSON { response in

    switch (response.result) {
    case .success:

        //success code here

    case .failure(let error):

        //failure code here
    }
}

如果你可以在Sever端轻松更改格式，忽略上面的解决方案，改为字典

[ "list_key" : [
       [imageUrl: "someimage.jpg"],
       [imageUrl: "someimage2.jpg"]
    ] 
 ]