swift - 如何使用 alamofire 的多部分表单数据发送嵌套数组参数

Question

如何将这个参数传给multipart

    let dictionary = [
        "user" :
            [
                "email" : "\(email!)",
                "token" : "\(loginToken!)"
        ],
        "photo_data" :[
            "name" : "Toko Tokoan1",
            "avatar_photo" : photo,
            "background_photo" : photo,
            "phone" : "0222222222",
            "addresses" :[[
                "address" : "Jalan Kita",
                "provinceid" : 13,
                "cityid" : 185,
                "postal" : "45512"
                ]],
            "banks" :[[
                "bank_name" : "PT Bank BCA",
                "account_number" : "292993122",
                "account_name" : "Tukiyeum"
                ]]

        ]

    ]

我试过下面的代码，但我无法将值(在 NSDic 中)编码为 utf 8

        for (key, value) in current_user {
            if key == "avatar_photo" || key == "background_photo"{
            multipartFormData.appendBodyPart(fileURL: value.data(using: String.Encoding.utf8)!, name: key) // value error because its NSDic
            }else{
             multipartFormData.appendBodyPart(data: value.data(using: String.Encoding.utf8)!, name: value) // value error because its NSDic
            }

        }

value 无法使用追加正文部分，因为它是 NSDictionary 而不是字符串。将该参数放入 multipartformdata 的正确方法是什么？

Answer 1

允许嵌套多部分。

The use of a Content-Type of multipart in a body part within another multipart entity is explicitly allowed. In such cases, for obvious reasons, care must be taken to ensure that each nested multipart entity must use a different boundary delimiter.

RFC 1341

因此您必须执行与在外循环中所做的相同的操作:简单地遍历生成键值对的字典的内容。显然，您必须设置不同的部分分隔符，以便客户端可以区分嵌套部分更改和顶级部分更改。

也许将整个结构作为 application/json 发送会更容易。