Swift JSON字符串和字典以及数组的互转

1、JSONString转换为字典

    // JSONString转换为字典

    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() }

2、JSONString转换为数组

func getArrayFromJSONString(jsonString:String) ->NSArray{

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

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

  

3、字典转换为JSONString

/**
字典转换为JSONString - parameter dictionary: 字典参数 - returns: JSONString
*/
func getJSONStringFromDictionary(dictionary:NSDictionary) -> String {
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! as String }

 

4、数组转换为JSONString

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

  

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