JAvaは18ビットの身分証明書番号が合法かどうかを検証します

身分証明書番号をパラメータとして判断します.

/**
	 *  18 
	 * 
	 * @param idCard
	 *             
	 * @return  
	 */
	/**  。 */
	public static boolean validateIdCard18(String idCard) {
		boolean bTrue = false;
		if (idCard.length() == 18) {
			//  17 
			String code17 = idCard.substring(0, 17);
			//  18 
			String code18 = idCard.substring(17, 18);
			if (isNum(code17)) {
				char[] cArr = code17.toCharArray();
				if (cArr != null) {
					int[] iCard = converCharToInt(cArr);
					int iSum17 = getPowerSum(iCard);
					//  
					String val = getCheckCode18(iSum17);
					if (val.length() > 0) {
						if (val.equalsIgnoreCase(code18)) {
							bTrue = true;
						}
					}
				}
			}
		}
		return bTrue;
	}

/**
	 *  
	 * 
	 * @param val
	 * @return  。
	 */
	public static boolean isNum(String val) {
		return val == null || "".equals(val) ? false : val.matches("^[0-9]*{1}");
	}

/**
	 *  
	 * 
	 * @param ca
	 *             
	 * @return  
	 */
	public static int[] converCharToInt(char[] ca) {
		int len = ca.length;
		int[] iArr = new int[len];
		try {
			for (int i = 0; i < len; i++) {
				iArr[i] = Integer.parseInt(String.valueOf(ca[i]));
			}
		} catch (NumberFormatException e) {
			e.printStackTrace();
		}
		return iArr;
	}

/**
	 *  ， 
	 * 
	 * @param iArr
	 * @return  。
	 */
	public static int getPowerSum(int[] iArr) {
		int iSum = 0;
		if (power.length == iArr.length) {
			for (int i = 0; i < iArr.length; i++) {
				for (int j = 0; j < power.length; j++) {
					if (i == j) {
						iSum = iSum + iArr[i] * power[j];
					}
				}
			}
		}
		return iSum;
	}

/**   */
	public static final int power[] = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 };

/**
	 *  power 11 
	 * 
	 * @param iSum
	 * @return  
	 */
	public static String getCheckCode18(int iSum) {
		String sCode = "";
		switch (iSum % 11) {
		case 10:
			sCode = "2";
			break;
		case 9:
			sCode = "3";
			break;
		case 8:
			sCode = "4";
			break;
		case 7:
			sCode = "5";
			break;
		case 6:
			sCode = "6";
			break;
		case 5:
			sCode = "7";
			break;
		case 4:
			sCode = "8";
			break;
		case 3:
			sCode = "9";
			break;
		case 2:
			sCode = "x";
			break;
		case 1:
			sCode = "0";
			break;
		case 0:
			sCode = "1";
			break;
		}
		return sCode;
	}