ios之快速将自定义包对象序列化为 json 字符串到 Bool

在我的项目中，有一个声明为静态的包对象，当客户单击“批准订单”按钮时，我将包对象序列化为 JSON 字符串。目前没有问题。但是，当我打印序列化的 json 字符串时，包中所有带有 Int 的“ID”都转换为 Bool 类型的 json 字符串结果。

这个过程的相关代码块如下:

这是我的“序列化”类:

public class Serializable : NSObject 
{ 
 
func toDictionary() -> NSDictionary 
{ 
    var aClass : AnyClass? = self.dynamicType 
    var propertiesCount : CUnsignedInt = 0 
    var propertiesInAClass : UnsafeMutablePointer<objc_property_t> = class_copyPropertyList(aClass, &propertiesCount) 
    var propertiesDictionary : NSMutableDictionary = NSMutableDictionary() 
 
    for(var i = 0; i < Int(propertiesCount); i++) 
    { 
        var property = propertiesInAClass[i] 
        var propName = NSString(CString: property_getName(property), encoding: NSUTF8StringEncoding) 
        var propType = property_getAttributes(property) 
        var propValue : AnyObject! = self.valueForKey(propName!) 
 
        if(propValue is Serializable) 
        { 
            propertiesDictionary.setValue((propValue as Serializable).toDictionary(), forKey: propName!) 
        } 
        else if(propValue is Array<Serializable>) 
        { 
            var subArray = Array<NSDictionary>() 
            for item in (propValue as Array<Serializable>) 
            { 
                subArray.append(item.toDictionary()) 
            } 
            propertiesDictionary.setValue(subArray, forKey: propName!) 
        } 
        else if(propValue is NSData) 
        { 
            propertiesDictionary.setValue((propValue as NSData).base64EncodedStringWithOptions(nil), forKey: propName!) 
        } 
        else if(propValue is Bool) 
        { 
            propertiesDictionary.setValue((propValue as Bool).boolValue, forKey: propName!) 
        } 
        else if(propValue is NSDate) 
        { 
            var date = propValue as NSDate 
            let dateFormatter = NSDateFormatter() 
            dateFormatter.dateFormat = "Z" 
            var dateString = NSString(format: "/Date(%.0f000%@)/", date.timeIntervalSince1970, dateFormatter.stringFromDate(date)) 
            propertiesDictionary.setValue(dateString, forKey: propName!) 
        } 
        else 
        { 
            propertiesDictionary.setValue(propValue, forKey: propName!) 
        } 
    } 
 
    return propertiesDictionary 
} 
 
    func toJson() -> NSData! 
    { 
        var dictionary = self.toDictionary() 
        var err: NSError? 
        return NSJSONSerialization.dataWithJSONObject(dictionary, options:NSJSONWritingOptions(0), error: &err) 
    } 
 
    func toJsonString() -> NSString! 
    { 
        return NSString(data: self.toJson(), encoding: NSUTF8StringEncoding) 
    } 
 
    override init() 
    { 
 
    } 
} 

这是我的 BagItem 类:

class BagItem: Serializable, Hashable { 
 
var uniqueID: Int = 0 
override var hashValue: Int { return uniqueID.hashValue } 
var bagItemId: String 
var item: Item 
var boughtDate: NSDate! 
var boughtTime: String 
var branch: Branch 
var isMainItem: Bool 
 
    override init() 
    { 
        self.bagItemId   = "" 
        self.item        = Item() 
        self.boughtDate  = NSDate() 
        self.boughtTime  = "" 
        self.branch      = Branch() 
        self.isMainItem  = false 
    } 
} 
 
func ==(lhs: BagItem, rhs: BagItem) -> Bool 
{ 
    return lhs.uniqueID == rhs.uniqueID 
} 

这是我的“SerializationBag”类:

class SerializableBag: Serializable 
{ 
    var bag: Array<BagItem> = [] 
 
    override init() 
    { 
 
    } 
} 

这是我在 Bag 类中的“ConvertBagToJSON”方法:

static func ConvertBagToJson() -> NSString 
{ 
    var serializer: SerializableBag = SerializableBag() 
    serializer.bag = self.bag 
    return serializer.toJsonString() 
} 

我返回的 JSON 字符串结果 如下:

{ 
"bag": [ 
    { 
        "branch": { 
            "city": { 
                "cityId": false, 
                "cityName": "" 
            }, 
            "town": { 
                "townName": "", 
                "townId": false 
            }, 
            "branchName": "Branch", 
            "branchId": true, 
            "business": { 
                "businessPhotoPath": "", 
                "businessName": "", 
                "businessId": true 
            }, 
            "branchAddress": "Some Address", 
            "branchTelephone": "" 
        }, 
        "uniqueID": false, 
        "boughtDate": "/Date(1414581909000+0200)/", 
        "item": { 
            "itemName": "Pencil", 
            "itemId": true, 
            "itemPrice": true 
        }, 
        "isMainItem": true, 
        "bagItemId": "9674D47B-0D2F-46CC-BA16-754875AE277D", 
        "hashValue": false, 
        "boughtTime": "00:30" 
    } 
] 
} 

如您所见，在 JSON String 中，ID 是 Bool，但它们必须是 Int 类型。我怎么解决这个问题 ？

谢谢你的回答

最好的问候

请您参考如下方法:

这是因为 Int 被桥接到 NSNumber 并且 NSNumber 始终是 is Bool。

在您的情况下，您不需要这些行:

    else if(propValue is Bool) 
    { 
        propertiesDictionary.setValue((propValue as Bool).boolValue, forKey: propName!) 
    } 

你可以删除它们，因为 NSJSONSerialization 可以处理它。

let flg:NSNumber = true 
let id:NSNumber = 1 
 
let dict:NSDictionary = [ 
    "bool": flg, 
    "id": id 
] 
 
let jsonDat = NSJSONSerialization.dataWithJSONObject(dict, options: .allZeros, error: nil)! 
let jsonStr = NSString(data: dat, encoding:NSUTF8StringEncoding) 
// -> {"id":1,"bool":true} 

更多相关示例:

class Foo:NSObject { 
    var flg:Bool = true 
    var id:Int = 1 
} 
 
let obj = Foo() 
let dict:NSDictionary = [ 
    "flg": obj.valueForKey("flg")!, 
    "id": obj.valueForKey("id")! 
] 
 
let jsonData = NSJSONSerialization.dataWithJSONObject(dict, options: .allZeros, error: nil)! 
let jsonStr = NSString(data: jsonData, encoding:NSUTF8StringEncoding)! 
// -> {"flg":true,"id":1}