JSON/NSDictionary/String互转

SwiftyJSON中dict转JSON

    do {
        let dict =  [
            "isOwner":false,
            "nickname":"Jackie",
            "sn":"101190112014",
            ] as [String : Any]
        
        let data = try JSONSerialization.data(withJSONObject: dict, options: .prettyPrinted)
        
        let json =  JSON(data: data)
    
    }catch let error {
        DLog(error)
    }

String转NSDictionary

    func getDictionaryFromJSONString(jsonString:String) ->NSDictionary{

        let jsonData:Data = jsonString.data(using: .utf8)!

        let dict = try? JSONSerialization.jsonObject(with: jsonData, options: .mutableContainers)
        if dict != nil {
            return dict as! NSDictionary
        }
        return NSDictionary()
    }
 

NSDictionary转String

    func getJSONStringFromDictionary(dictionary:NSDictionary) -> NSString {
        if (!JSONSerialization.isValidJSONObject(dictionary)) {
            print("无法解析出JSONString")
            return ""
        }
        let data : NSData! = try? JSONSerialization.data(withJSONObject: dictionary, options: []) as NSData!
        let JSONString = NSString(data:data as Data,encoding: String.Encoding.utf8.rawValue)
        return JSONString!
    }