将数组转换为转义字符串

Question

我有一堆这样的词典。

[["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]]

我需要将整个数组变成转义字符串。像这样。

"[{\"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，但我不知道如何转义其中的那些字符。我搜索了很多，但我也找不到执行此操作的方法。

我试着添加一个字符串扩展来做这样的事情。

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

结果是这样的

[[\"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]]

看起来几乎是预期的输出，但请注意内部的一对方括号。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。试试下面的代码

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

Turn an array into a escaped string

arrays

string

escaping

ios

swift