public static String getProvinceByIdCard(String idcard) {
		final String code = getProvinceCodeByIdCard(idcard);
		if (StrUtil.isNotBlank(code)) {
			return CITY_CODES.get(code);
		}
		return null;
	}
@Test
	public void getProvinceByIdCardTest() {
		String province = IdcardUtil.getProvinceByIdCard(ID_18);
		assertEquals(province, "江苏");

		String province2 = IdcardUtil.getProvinceByIdCard(ID_15);
		assertEquals(province2, "内蒙古");
	}