Alamofire.uploadmultipartFormData 与 JSONEncoding.default (Swift)

Question

我必须将照片和 json 发送到服务器。我的 json 是：

{"anticorona":"Anti_Covid","time":"Time","navigateds":[{"collection_public_key":"Origin_Station.collection_public_key","station_public_key":"Origin_Station.public_key"},{"station_public_key":"Des_Station.public_key","collection_public_key":"Des_Station.collection_public_key"}],"seats":"Seats","date":"Date"}

我如何用 Alamofire.uploadmultipartFormData 发送这个 json 我知道我可以使用编码：JSONEncoding.default in Alamofire.request 但在使用 Alamofire.uploadmultipartFormData?

时可以使用 JSONEncoding.default

谢谢

Answer 1

您似乎是新手，如果您可以在以后的问题中添加一些您尝试过的代码，那就太好了。无论如何，据我所知，这应该可以通过以下方式实现。我假设密钥 "navigateds" 保持不变。否则你也可以检查值（在 for-in-loop 中）是否也是一个数组：

// set parameters for request
let antiCoronaParameters: Parameters = [
    "anticorona"   : "Anti_Covid",
    "time":"Time",
    "navigateds":[
      ["collection_public_key":"Origin_Station.collection_public_key", "station_public_key":"Origin_Station.public_key"],
      ["station_public_key":"Des_Station.public_key", "collection_public_key":"Des_Station.collection_public_key"]
    ],
    "seats":"Seats",
    "date":"Date"
]

let upload = AF.upload(multipartFormData: { (formData) in

    // I would append file data here first
    
    for (key, value) in antiCoronaParameters {
        if key == "navigateds" {
            do {
                let arrayData = try JSONSerialization.data(withJSONObject: value, options: .prettyPrinted)
                formData.append(arrayData, withName: key)
            } catch {
                print("could not append array, failed with error:", error)
            }
        } else if let string = value as? String, let stringData = string.data(using: String.Encoding.utf8, allowLossyConversion: false) {
            formData.append(stringData, withName: key)
        } else {
            print("could not append some data in parameters")
        }
    }
    
}, to: "https://www.yourURLhere.com/link.php", method: .post).validate()

upload.responseString { (responseString) in
    print(responseString)
}

此答案基于 this 问题。将来，我建议尝试使用与您的问题相关的大量关键字。最初，搜索问题会花费更多时间，但我相信您很快就会掌握窍门。也许下次再多尝试一下 ;)

但是，正如您已经提到的，还有另一种方法，如果您想查看，我已经为您准备好了。你基本上已经提到了它，我总是更喜欢它而不是 upload 除非有一个很好的理由：

// set parameters for request
let antiCoronaParameters: Parameters = [
    "anticorona"   : "Anti_Covid",
    "time":"Time",
    "navigateds":[
      ["collection_public_key":"Origin_Station.collection_public_key", "station_public_key":"Origin_Station.public_key"],
      ["station_public_key":"Des_Station.public_key", "collection_public_key":"Des_Station.collection_public_key"]
    ],
    "seats":"Seats",
    "date":"Date"
]

// request with json encoded parameters (e.g. sending to php)
let antiCoronaRequest = AF.request("https://www.yourURLhere.com/link.php", method: .post, parameters: antiCoronaParameters, encoding: JSONEncoding.default).validate()
    
antiCoronaRequest.responseString(completionHandler: { (response) in
    print(response)
})

如有任何问题，请联系我。

Alamofire.uploadmultipartFormData 与 JSONEncoding.default (Swift)

Alamofire.uploadmultipartFormData with JSONEncoding.default (Swift)

ios

swift

alamofire