Question

我有一系列像这样的词典。

[["updated_at": , "expected_qty": 1, "parts_id": 1, "mappingType": service, "description": , "name": Epoxy, "created_at": , "price": 0, "win_service_id": 1, "id": 1, "mappingID": 1], ["updated_at": , "expected_qty": 1, "parts_id": 2, "mappingType": service, "description": , "name": Wood for Lami, "created_at": , "price": 0, "win_service_id": 1, "id": 2, "mappingID": 1]]

我需要将整个数组转换为转义字符串。这样的事情。

"[{\"updated_at\":\"\",\"expected_qty\":1,\"parts_id\":1,\"mappingType\":\"service\",\"description\":\"\",\"name\":\"Epoxy\",\"created_at\":\"\",\"price\":0,\"win_service_id\":1,\"id\":1,\"mappingID\":1},{\"updated_at\":\"\",\"expected_qty\":1,\"parts_id\":2,\"mappingType\":\"service\",\"description\":\"\",\"name\":\"Wood for Lami\",\"created_at\":\"\",\"price\":0,\"win_service_id\":1,\"id\":2,\"mappingID\":1}]"

我知道您可以使用array.description将数组转换为字符串，但我不知道如何在其中转义这些字符。我搜索了很多，但我找不到这样做的方法。

我尝试添加字符串扩展来执行此类操作。

extension String {
    var escaped: String {
        return self.stringByReplacingOccurrencesOfString("\"", withString: "\\\"")
    }
}

结果就是这样。

[[\"updated_at\": , \"expected_qty\": 1, \"parts_id\": 3, \"mappingType\": service, \"description\": , \"name\": Sill, \"created_at\": , \"price\": 0, \"win_service_id\": 8, \"id\": 3, \"mappingID\": 8]]

看起来它几乎是预期的输出，但注意内部方括号对。那些必须是大括号。

那么有更好的方法吗？

Answer 1

您可以使用NSJSONSerialization将字典转换为json。请尝试以下代码

let dict = ["key":"value","key1":"0","key2":"1"] as Dictionary<String, AnyObject>
let data = try? NSJSONSerialization.dataWithJSONObject(dict, options:NSJSONWritingOptions.PrettyPrinted)
var datastring = String(data: data!, encoding: NSUTF8StringEncoding)

将数组转换为转义字符串

1 个答案: