Json 在 swift 更新

Question

目标是将 innerJson 转换为 Array<[String:Any]>。这有什么错误？请帮忙

var outerJson:String? = "{\"outerkey1\":\"Air France\",\"innerJson\":\"[{\\"innerJsonKey1\\":\\"1\\",\\"innerJsonKey2\\":{\\"businessPurpose\\":\\"Test\\",\\"description\\":\\"Testing \\"}},{\\"innerJsonKey1\\":\\"2\\",\\"innerJsonKey2\\":{\\"businessPurpose\\":null,\\"description\\":null}}]\",\"AirClass\":\"null\",\"FromTo\":\"Utti (QVY)\/Umea (UME)\"}"
var convertedDict:[String:Any]?
if let data = outerJson?.data(using: String.Encoding.utf8) {

    do {
        convertedDict = try JSONSerialization.jsonObject(with: data, options: []) as? [String:Any]
        //print(convertedDict)
    } catch {
        //CALogger.dPrint(error)
    }
}
//print(convertedDict?["innerJson"] as Any)
var array = convertedDict?["innerJson"] as? Array<[String:Any]>
print(array)

Answer 1

var outerJson:String? = "{\"outerkey1\":\"Air France\",\"innerJson\":\"[{\\"innerJsonKey1\\":\\"1\\",\\"innerJsonKey2\\":{\\"businessPurpose\\":\\"Test\\",\\"description\\":\\"Testing \\"}},{\\"innerJsonKey1\\":\\"2\\",\\"innerJsonKey2\\":{\\"businessPurpose\\":null,\\"description\\":null}}]\",\"AirClass\":\"null\",\"FromTo\":\"Utti (QVY)\/Umea (UME)\"}"

var convertedDict:[String:Any]?

if let data = outerJson?.data(using: String.Encoding.utf8) {

    do {
        convertedDict = try JSONSerialization.jsonObject(with: data, options: [.mutableContainers,.allowFragments,.mutableLeaves]) as? [String: Any]
        //print(convertedDict)
    } catch {
        //CALogger.dPrint(error)
    }
}

// Create a new array of type [<String, Any>] from the convertedDict dictionary 
let arrayOfDicts = convertedDict?.map { [[=10=].key: [=10=].value] }

print(arrayOfDicts)

Answer 2

请仔细阅读JSON。 key innerJson 的值是 a(nother JSON) String，不是数组。多行文字字符串语法使其更清晰。

你必须申请JSON序列化两次

let outerJson = """
{"outerkey1":"Air France","innerJson":"[{\"innerJsonKey1\":\"1\",\"innerJsonKey2\":{\"businessPurpose\":\"Test\",\"description\":\"Testing \"}},{\"innerJsonKey1\":\"2\",\"innerJsonKey2\":{\"businessPurpose\":null,\"description\":null}}]","AirClass":"null","FromTo":"Utti (QVY)\/Umea (UME)"}
"""


let data = Data(outerJson.utf8)
do {
    if let outerDict = try JSONSerialization.jsonObject(with: data) as? [String:Any],
        let innerJSON = outerDict["innerJson"] as? String {
        if let innerArray = try JSONSerialization.jsonObject(with: Data(innerJSON.utf8)) as? [[String:Any]] {
            print(innerArray)
        }
    }
} catch {
    //CALogger.dPrint(error)
}

Json 在 swift 更新

Json updating in swift

json

ios

swift4.2