ios - 如何将帖子字符串写入API swift 3

Question

我是新来的。如何编写下面的代码并将其转换为 postString，因为我需要提交到 API。

{
    "service": 0,
    "size": "string",
    "orderReference": "string",
    "dropOffHubId": "string",
    "pickUpHubId": "string",
    "courierId": "string",
    "from": {
        "address": {
            "address1": "string",
            "address2": "string",
            "city": "string",
            "postcode": "string",
            "state": "string",
            "country": "string"
        }
    },
    "to": {
        "name": "string",
        "phone": "string",
        "email": "string",
        "address": {
            "address1": "string",
            "address2": "string",
            "city": "string",
            "postcode": "string",
            "state": "string",
            "country": "string"
        }
    }
}

如果我这样写，我是否正确，但是如何在 "from": { 和 "address": { 之后放入字符串，然后去进入"address1": "string"，然后另一个是"to": { "name": "string"，然后进去"address": {，然后进入"address1": "string"，

let postString = [ "service": 0,
                   "size": "string",
                   "orderReference": "string",
                   "dropOffHubId": "string",
                   "pickUpHubId": "string",
                   "courierId": "string",
                   "from": "fromAddArr",
                   "to": "toAddArr"] as [String : Any]
var request = URLRequest(url:URL!)
request.httpMethod = "POST"
request.setValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue(bearerToken!, forHTTPHeaderField: "Authorization")
request.httpBody = try! JSONSerialization.data(withJSONObject: postString, options:.prettyPrinted)

我只知道这样写。

{
  "refNo": "string",
  "code": "string"
}

let postString = ["refNo": "string",
                          "code": "string"]

Answer 1

试试这个，我想你想要这样的东西:首先从当前的 json 中获取地址字典并将该字典转换为字符串:

let dictionary:[String:Any] = ["address": [
            "address1": "string",
            "address2": "string",
            "city": "string",
            "postcode": "string",
            "state": "string",
            "country": "string"
        ]
    ]

    if let theJSONData = try? JSONSerialization.data( withJSONObject: dictionary, options: []) {
        let theJSONText = String(data: theJSONData, encoding: .utf8)
        print("JSON string = \(theJSONText!)") //you can use this string to create dictionary as you want 
        let dict = ["addres":theJSONText!]
        print(dict)
    }