swift-字典，数组，字符串之间的转化

swift基础之字典，数组，字符串之间的转化

1、JSONString转换为字典

//1、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

//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 NSArray()
        
    }

3、字典转换为JSONString

 //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

//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
        
    }

demo地址