flex 验证中文

//验证ip地址
		private static var ip2:RegExp=/^(d{1,2}|1dd|2[0-4]d|25[0-5]).(d{1,2}|1dd|2[0-4]d|25[0-5])$/;

		public static function validIP(str:String):String
		{
			var s:String = "";
			if (ip2.test(str))
			{
		
			}
			else
			{
				s = "你输入的IP地址格式不正确";
			}
			return s;
		}
		
		//验证汉字 
		private static var chinese:RegExp =/^[u4E00-u9FA5]+$/;
		public static function validChinese(str:String):String {
			var r:String = "";
			if(chinese.test(str)){
				r = "你输入的字符串里面有汉字！";
			}
			return r;
		}