java常用組件之身份證驗證

package cn.ccb.jstsccf.common.utils;

 

import java.text.SimpleDateFormat;

/**
* 檢查身份證的有效性。
*
* @author ghl
* @version $Revision: 1.1 $
*
*/
public class CheckCetiType {

/**
* 檢查校驗位
* @param certiCode
* @return
*/
private static boolean checkIDParityBit(String certiCode) {
boolean flag = false;
if (certiCode == null || "".equals(certiCode))
return false;
int ai[] = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 };
if (certiCode.length() == 18) {
int i = 0;
for (int k = 0; k < 18; k++) {
char c = certiCode.charAt(k);
int j;
if (c == 'X')
j = 10;
else if (c <= '9' && c >= '0')
j = c - 48;
else
return flag;
i += j * ai[k];
}

if (i % 11 == 1)
flag = true;
}
return flag;
}

/**
* 檢查日期格式
*
* @param year
* @param month
* @param day
* @return
*/
private static boolean checkDate(String year, String month, String day) {
SimpleDateFormat simpledateformat = new SimpleDateFormat("yyyyMMdd");
try {
String s3 = year + month + day;
simpledateformat.setLenient(false);
simpledateformat.parse(s3);
} catch (java.text.ParseException parseexception) {
return false;
}
return true;
}

/**
* 校驗身份證
*
* @param certiCode
* 待校驗身份證
* @return 0--校驗成功; 1--位數不對; 2--生日格式不對 ; 3--校驗位不對 ; 4--其他異常;5--字符異常;
* @param certiCode
* @return
*/
private static int checkCertiCode(String certiCode) {
try {
if (certiCode == null || certiCode.length() != 15
&& certiCode.length() != 18)
return 1;
String s1;
String s2;
String s3;

if (certiCode.length() == 15) {

if(!checkFigure(certiCode)){
return 5;
}

s1 = "19" + certiCode.substring(6, 8);
s2 = certiCode.substring(8, 10);
s3 = certiCode.substring(10, 12);

if (!checkDate(s1, s2, s3))
return 2;
}

if (certiCode.length() == 18) {
if(!checkFigure(certiCode.substring(0,17))){
return 5;
}

s1 = certiCode.substring(6, 10);
s2 = certiCode.substring(10, 12);
s3 = certiCode.substring(12, 14);

if (!checkDate(s1, s2, s3))
return 2;
if (!checkIDParityBit(certiCode))
return 3;
}
} catch (Exception exception) {

return 4;
}
return 0;
}

/**
* 判斷身份證號碼是否有效
* @param idCard
* @return
*/
public static boolean isIdCard(String idCard) {
if (checkCertiCode(idCard) == 0)
return true;
else
return false;
}

/**
* 檢查字符串是否全爲數字
* @param certiCode
* @return
*/
private static boolean checkFigure(String certiCode){
try {
Long.parseLong(certiCode);
} catch (NumberFormatException e) {
return false;
}
return true;
}

/**
* @param args
*/
public static void main(String[] args) {
String cetitype = "36048119811102341K";
System.out.println(isIdCard(cetitype));
}

}