身份证号码工具类

public class IDCard
{
  public static String IDCardValidate(String IDStr)
    throws ParseException
  {
    IDStr = IDStr.toLowerCase();
    String errorInfo = "";
    String[] ValCodeArr = { "1", "0", "x", "9", "8", "7", "6", "5", "4", 
      "3", "2" };
    String[] Wi = { "7", "9", "10", "5", "8", "4", "2", "1", "6", "3", "7", 
      "9", "10", "5", "8", "4", "2" };
    String Ai = "";

    if ((IDStr.length() != 15) && (IDStr.length() != 18)) {
      errorInfo = "身份证号码长度应该为15位或18位。";
      return errorInfo;
    }

    if (IDStr.length() == 18)
      Ai = IDStr.substring(0, 17);
    else if (IDStr.length() == 15) {
      Ai = IDStr.substring(0, 6) + "19" + IDStr.substring(6, 15);
    }
    if (!isNumeric(Ai)) {
      errorInfo = "身份证15位号码都应为数字 ; 18位号码除最后一位外，都应为数字。";
      return errorInfo;
    }

    String strYear = Ai.substring(6, 10);
    String strMonth = Ai.substring(10, 12);
    String strDay = Ai.substring(12, 14);
    if (!isDate(strYear + "-" + strMonth + "-" + strDay)) {
      errorInfo = "身份证生日无效。";
      return errorInfo;
    }
    GregorianCalendar gc = new GregorianCalendar();
    SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd");
    try {
      if ((gc.get(1) - Integer.parseInt(strYear) > 150) || 
        (gc.getTime().getTime() - s.parse(
        strYear + "-" + strMonth + "-" + strDay).getTime() < 0L)) {
        errorInfo = "身份证生日不在有效范围。";
        return errorInfo;
      }
    } catch (NumberFormatException e) {
      e.printStackTrace();
    } catch (ParseException e) {
      e.printStackTrace();
    }
    if ((Integer.parseInt(strMonth) > 12) || (Integer.parseInt(strMonth) == 0)) {
      errorInfo = "身份证月份无效";
      return errorInfo;
    }
    if ((Integer.parseInt(strDay) > 31) || (Integer.parseInt(strDay) == 0)) {
      errorInfo = "身份证日期无效";
      return errorInfo;
    }

    Hashtable h = GetAreaCode();
    if (h.get(Ai.substring(0, 2)) == null) {
      errorInfo = "身份证地区编码错误。";
      return errorInfo;
    }

    int TotalmulAiWi = 0;
    for (int i = 0; i < 17; i++)
    {
      TotalmulAiWi = TotalmulAiWi + 
        Integer.parseInt(String.valueOf(Ai.charAt(i))) * 
        Integer.parseInt(Wi[i]);
    }
    int modValue = TotalmulAiWi % 11;
    String strVerifyCode = ValCodeArr[modValue];
    Ai = Ai + strVerifyCode;

    if (IDStr.length() == 18) {
      if (!Ai.equals(IDStr)) {
        errorInfo = "身份证无效，不是合法的身份证号码";
        return errorInfo;
      }
    }
    else return "";

    return "";
  }

  private static Hashtable GetAreaCode()
  {
    Hashtable hashtable = new Hashtable();
    hashtable.put("11", "北京");
    hashtable.put("12", "天津");
    hashtable.put("13", "河北");
    hashtable.put("14", "山西");
    hashtable.put("15", "内蒙古");
    hashtable.put("21", "辽宁");
    hashtable.put("22", "吉林");
    hashtable.put("23", "黑龙江");
    hashtable.put("31", "上海");
    hashtable.put("32", "江苏");
    hashtable.put("33", "浙江");
    hashtable.put("34", "安徽");
    hashtable.put("35", "福建");
    hashtable.put("36", "江西");
    hashtable.put("37", "山东");
    hashtable.put("41", "河南");
    hashtable.put("42", "湖北");
    hashtable.put("43", "湖南");
    hashtable.put("44", "广东");
    hashtable.put("45", "广西");
    hashtable.put("46", "海南");
    hashtable.put("50", "重庆");
    hashtable.put("51", "四川");
    hashtable.put("52", "贵州");
    hashtable.put("53", "云南");
    hashtable.put("54", "西藏");
    hashtable.put("61", "陕西");
    hashtable.put("62", "甘肃");
    hashtable.put("63", "青海");
    hashtable.put("64", "宁夏");
    hashtable.put("65", "新疆");
    hashtable.put("71", "台湾");
    hashtable.put("81", "香港");
    hashtable.put("82", "澳门");
    hashtable.put("91", "国外");
    return hashtable;
  }

  private static boolean isNumeric(String str)
  {
    Pattern pattern = Pattern.compile("[0-9]*");
    Matcher isNum = pattern.matcher(str);

    return isNum.matches();
  }

  public static boolean isDate(String strDate)
  {
    Pattern pattern = 
      Pattern.compile("^((\\d{2}(([02468][048])|([13579][26]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])))))|(\\d{2}(([02468][1235679])|([13579][01345789]))[\\-\\/\\s]?((((0?[13578])|(1[02]))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(3[01])))|(((0?[469])|(11))[\\-\\/\\s]?((0?[1-9])|([1-2][0-9])|(30)))|(0?2[\\-\\/\\s]?((0?[1-9])|(1[0-9])|(2[0-8]))))))(\\s(((0?[0-9])|([1-2][0-3]))\\:([0-5]?[0-9])((\\s)|(\\:([0-5]?[0-9])))))?$");
    Matcher m = pattern.matcher(strDate);

    return m.matches();
  }
}