public class IDCard {
private String _codeError;
//wi =2(n-1)(mod 11)
final int[] wi = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1};
// verify digit
final int[] vi = {1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2};
private int[] ai =
new int[18];
private static String[] _areaCode={"11","12","13","14","15","21","22"
,"23","31","32","33","34","35","36","37","41","42","43","44"
,"45","46","50","51","52","53","54","61","62","63","64","65","71","81","82","91"};
private static HashMap<String,Integer> dateMap;
private static HashMap<String,String> areaCodeMap;
static{
dateMap=
new HashMap<String,Integer>();
dateMap.put("01",31);
dateMap.put("02",
null);
dateMap.put("03",31);
dateMap.put("04",30);
dateMap.put("05",31);
dateMap.put("06",30);
dateMap.put("07",31);
dateMap.put("08",31);
dateMap.put("09",30);
dateMap.put("10",31);
dateMap.put("11",30);
dateMap.put("12",31);
areaCodeMap=
new HashMap<String,String>();
for(String code:_areaCode){
areaCodeMap.put(code,
null);
}
}
//驗證身份證位數,15位和18位身份證
public boolean verifyLength(String code){
int length=code.length();
if(length==15 || length==18){
return true;
}
else{
_codeError="錯誤：輸入的身份證號不是15位和18位的";
return false;
}
}
//判斷地區碼
public boolean verifyAreaCode(String code){
String areaCode=code.substring(0,2);
// Element child= _areaCodeElement.getChild("_"+areaCode);
if(areaCodeMap.containsKey(areaCode)){
return true;
}
else{
_codeError="錯誤：輸入的身份證號的地區碼(1-2位)["+areaCode+"]不符合中國行政區劃分代碼規定(GB/T2260-1999)";
return false;
}
}
//判斷月份和日期
public boolean verifyBirthdayCode(String code){
//驗證月份
String month=code.substring(10,12);
boolean isEighteenCode=(18==code.length());
if(!dateMap.containsKey(month)){
_codeError="錯誤：輸入的身份證號"+(isEighteenCode?"(11-12位)":"(9-10位)")+"不存在["+month+"]月份,不符合要求(GB/T7408)";
return false;
}
//驗證日期
String dayCode=code.substring(12,14);
Integer day=dateMap.get(month);
String yearCode=code.substring(6,10);
Integer year=Integer.valueOf(yearCode);
//非2月的情況
if(day!=
null){
if(Integer.valueOf(dayCode)>day || Integer.valueOf(dayCode)<1){
_codeError="錯誤：輸入的身份證號"+(isEighteenCode?"(13-14位)":"(11-13位)")+"["+dayCode+"]號不符合小月1-30天大月1-31天的規定(GB/T7408)";
return false;
}
}
//2月的情況
else{
//閏月的情況
if((year%4==0&&year%100!=0)||(year%400==0)){
if(Integer.valueOf(dayCode)>29 || Integer.valueOf(dayCode)<1){
_codeError="錯誤：輸入的身份證號"+(isEighteenCode?"(13-14位)":"(11-13位)")+"["+dayCode+"]號在"+year+"閏年的情況下未符合1-29號的規定(GB/T7408)";
return false;
}
}
//非閏月的情況
else{
if (Integer.valueOf(dayCode) > 28 || Integer.valueOf(dayCode) < 1) {
_codeError="錯誤：輸入的身份證號"+(isEighteenCode?"(13-14位)":"(11-13位)")+"["+dayCode+"]號在"+year+"平年的情況下未符合1-28號的規定(GB/T7408)";
return false;
}
}
}
return true;
}
//驗證身份除了最后位其他的是否包含字母
public boolean containsAllNumber(String code) {
String str="";
if(code.length()==15){
str=code.substring(0,15);
}
else if(code.length()==18){
str=code.substring(0,17);
}
char[] ch = str.toCharArray();
for (
int i = 0; i < ch.length; i++) {
if (! (ch[i] >= '0' && ch[i] <= '9')) {
_codeError="錯誤：輸入的身份證號第"+(i+1)+"位包含字母";
return false;
}
}
return true;
}
public String getCodeError(){
return _codeError;
}
//驗證身份證
public boolean verify(String idcard) {
_codeError="";
//驗證身份證位數,15位和18位身份證
if(!verifyLength(idcard)){
return false;
}
//驗證身份除了最后位其他的是否包含字母
if(!containsAllNumber(idcard)){
return false;
}
//如果是15位的就轉成18位的身份證
String eifhteencard="";
if (idcard.length() == 15) {
eifhteencard = uptoeighteen(idcard);
}
else{
eifhteencard=idcard;
}
//驗證身份證的地區碼
if(!verifyAreaCode(eifhteencard)){
return false;
}
//判斷月份和日期
if(!verifyBirthdayCode(eifhteencard)){
return false;
}
//驗證18位校驗碼,校驗碼采用ISO 7064：1983，MOD 11-2 校驗碼系統
if(!verifyMOD(eifhteencard)){
return false;
}
return true;
}
//驗證18位校驗碼,校驗碼采用ISO 7064：1983，MOD 11-2 校驗碼系統
public boolean verifyMOD(String code){
String verify = code.substring(17, 18);
if("x".equals(verify)){
code=code.replaceAll("x","X");
verify="X";
}
String verifyIndex=getVerify(code);
if (verify.equals(verifyIndex)) {
return true;
}
// int x=17;
// if(code.length()==15){
// x=14;
// }
_codeError="錯誤：輸入的身份證號最末尾的數字驗證碼錯誤";
return false;
}
//獲得校驗位
public String getVerify(String eightcardid) {
int remaining = 0;
if (eightcardid.length() == 18) {
eightcardid = eightcardid.substring(0, 17);
}
if (eightcardid.length() == 17) {
int sum = 0;
for (
int i = 0; i < 17; i++) {
String k = eightcardid.substring(i, i + 1);
ai[i] = Integer.parseInt(k);
}
for (
int i = 0; i < 17; i++) {
sum = sum + wi[i] * ai[i];
}
remaining = sum % 11;
}
return remaining == 2 ? "X" : String.valueOf(vi[remaining]);
}
//15位轉18位身份證
public String uptoeighteen(String fifteencardid) {
String eightcardid = fifteencardid.substring(0, 6);
eightcardid = eightcardid + "19";
eightcardid = eightcardid + fifteencardid.substring(6, 15);
eightcardid = eightcardid + getVerify(eightcardid);
return eightcardid;
}
調 用
new IDCard().verify(身份證id);
轉載：http://www.oschina.net/code/snippet_249203_24013