java 联系电话/证件号码脱敏处理

1、脱敏处理联系电话

	public static String getPhoneNum (String Num) {
		if(Num.length()==11){
			return Num.replaceAll("(\d{3})\d{4}(\d{4})","$1****$2");
		}
		return Num.substring(0,3)+"****";
	}

2、证件号码脱敏处理

	public static String getIdNumber (String Num) {
		if(Num.length() == 15){
			return Num.replaceAll("(\d{6})\d{6}(\d{3})","$1******$2");
		}
		if(Num.length() == 18){
			if(Pattern.matches(".*[A-Za-z]+.*", Num)){//是否含字母
				return Num.replaceAll("(\d{6})\d{9}(\d{2})","$1*********$2");
			}else{
				return Num.replaceAll("(\d{6})\d{9}(\d{3})","$1*********$2");
			}
		}
		return Num.substring(0,6)+"******";
	}