最嚴格的身份證校驗（Java版）
上一篇部落格貼出了JavaScript版本的身份證校驗，本篇部落格將貼出Java版的身份證校驗：
import java.util.Date;
/**
* 校驗身份證號碼是否有效
*
* @author GaoHuanjie
*/
public class CheckCertificateNo {
@SuppressWarnings("deprecation")
publicstatic
String certificateNo = "61072919761109762X";//身份證號碼
if(certificateNo.length() == 15){
System.err.println("身份證號碼無效，請使用第二代身份證！！！");
}elseif(certificateNo.length() == 18){
String address = certificateNo.substring(0,6);//6
String birthday = certificateNo.substring(6,14);//8位，出生日期
String sequenceCode = certificateNo.substring(14,17);//3位，順序碼：奇為男，偶為女
String checkCode = certificateNo.substring(17);//1位，校驗碼：檢驗位
System.out
String [] provinceArray = {"11:北京","12:天津","13:河北","14:山西","15:內蒙古","21:遼寧","22:吉林","23:黑龍江","31:上海","32:江蘇","33:浙江","34:安徽", "35:福建","36:江西","37:山東","41:河南","42:湖北 ","43:湖南","44:廣東","45:廣西","46:海南","50:重慶","51:四川","52:貴州","53:雲南","54:西藏 ","61:陝西","62:甘肅","63:青海","64:寧夏", "65:新疆","71:臺灣","81:香港","82:澳門","91:國外"};
boolean valideAddress =false;
for (int i = 0; i < provinceArray.length; i++) {
String provinceKey =provinceArray[i].split(":")[0];
if (provinceKey.equals(address.substring(0,2))){
valideAddress = true;
}
}
if (valideAddress) {
Stringyear = birthday.substring(0,4);
String month =birthday.substring(4,6);
String day =birthday.substring(6);
Date tempDate = newDate(Integer.parseInt(year),Integer.parseInt(month)-1,Integer.parseInt(day));
if((tempDate.getYear()!=Integer.parseInt(year)|| tempDate.getMonth()!=Integer.parseInt(month)-1 || tempDate.getDate()!=Integer.parseInt(day))){//避免千年蟲問題
System.err.println("身份證號碼無效，請重新輸入！！！");
}else{
int [] weightedFactors = { 7, 9, 10, 5, 8, 4, 2,1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 };//加權因子
int [] valideCode = { 1, 0, 10, 9, 8, 7, 6, 5,4, 3, 2 };//身份證驗證位值，其中10代表X
int sum = 0;//宣告加權求和變數
String []certificateNoArray =newString[certificateNo.length()];
for (int i = 0; i < certificateNo.length(); i++) {
certificateNoArray[i] =String.valueOf(certificateNo.charAt(i));
}
if ("x".equals(certificateNoArray[17].toLowerCase())) {
certificateNoArray[17] ="10";//將最後位為x的驗證碼替換為10
}
for (int i = 0; i < 17; i++) {
sum += weightedFactors[i]* Integer.parseInt(certificateNoArray[i]);//加權求和
}
int valCodePosition = sum % 11;//得到驗證碼所在位置
if (Integer.parseInt(certificateNoArray[17])== valideCode[valCodePosition]) {
String sex = "男";
if(Integer.parseInt(sequenceCode)%2==0){
sex = "女";
}
System.out.println("身份證號碼有效，性別為："+sex+"！");
} else {
System.err.println("身份證號碼無效，請重新輸入！！！");
}
}
} else {
System.err.println("身份證號碼無效，請重新輸入！！！");
}
}else{
System.err.println("非身份證號碼，請輸入身份證號碼！！！");
}
}
}