//數(shù)組轉JSON
func arrayToJson(_ array:NSMutableArray)->String{

//首先判斷能不能轉換
if (!JSONSerialization.isValidJSONObject(array)) {
    //print("is not a valid json object")
    return ""
}

//利用OC的json庫轉換成OC的NSData蟀架，
//如果設置options為NSJSONWritingOptions.PrettyPrinted，則打印格式更好閱讀
let data : Data! = try? JSONSerialization.data(withJSONObject: array, options: [])
//NSData轉換成NSString打印輸出
let str = NSString(data:data, encoding: String.Encoding.utf8.rawValue)
//輸出json字符串
return str! as String

}

//OC
-(NSString *)arrayToJson:(NSArray *)array{

NSData * data = [NSJSONSerialization dataWithJSONObject:array options:NSJSONWritingPrettyPrinted error:nil];

NSString * str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
return str;

}

//數(shù)組(里面類型為字典)轉字符串
func dicArrayToJson(_ dicArray:[Dictionary<String,String>])->String{

//首先判斷能不能轉換
if (!JSONSerialization.isValidJSONObject(dicArray)) {
    //print("is not a valid json object")
    return ""
}

//利用OC的json庫轉換成OC的NSData榆骚，
//如果設置options為NSJSONWritingOptions.PrettyPrinted片拍，則打印格式更好閱讀
let data : Data! = try? JSONSerialization.data(withJSONObject: dicArray, options: [])
//NSData轉換成NSString打印輸出
let str = NSString(data:data, encoding: String.Encoding.utf8.rawValue)
//輸出json字符串
return str! as String

}

/** json 字符串字典*/
func jsonToObject(jsonString:String)->Dictionary<String,NSObject>{

let dic = Dictionary<String,NSObject>()


do{
    
    let data = jsonString.data(using: String.Encoding.utf8)!
    //把NSData對象轉換回JSON對象
    let json :Any! = try JSONSerialization.jsonObject(with: data, options:JSONSerialization.ReadingOptions.mutableContainers)
    
    return json as! Dictionary<String, NSObject>
}catch{
    return dic
}

}

/** json 字符串數(shù)組*/
func jsonToArray(jsonString:String)->Array<Dictionary<String, String>>{

let arr = [Dictionary<String,String>()]


do{
    
    let data = jsonString.data(using: String.Encoding.utf8)!
    //把NSData對象轉換回JSON對象
    let json : Any! = try JSONSerialization.jsonObject(with: data, options:JSONSerialization.ReadingOptions.mutableContainers)
    
    return json as! [Dictionary<String, String>]
}catch{
    return arr
}

}