用正则表达式验证身份证号码 java

import java.text.DateFormat;

import java.text.NumberFormat;

import java.text.ParseException;

import java.util.Date;

import java.util.Random;

public class Identity {

// 位权值数组

private static byte[] Wi=new byte[17];

// 身份证前部分字符数

private static final byte fPart = 6;

// 身份证算法求模关键值

private static final byte fMod = 11;

// 旧身份证长度

private static final byte oldIDLen = 15;

// 新身份证长度

private static final byte newIDLen = 18;

// 新身份证年份标志

private static final String yearFlag = "19";

// 校验码串

private static final String CheckCode="10X98765432";

// 最小的行政区划码

private static final int minCode = 150000;

// 最大的行政区划码

private static final int maxCode = 700000;

// 旧身份证号码

// private String oldIDCard="";

// 新身份证号码

// private String newIDCard="";

// 地区及编码

//private String Area[][2] =

private static void setWiBuffer(){

for(int i=0;i <Wi.length;i++){

int k = (int) Math.pow(2, (Wi.length-i));

Wi[i] = (byte)(k % fMod);

}

}

//获取新身份证的最后一位:检验位

private static String getCheckFlag(String idCard){

int sum = 0;

//进行加权求和

for(int i=0; i <17; i++){

sum += Integer.parseInt(idCard.substring(i,i+1)) * Wi[i];

}

//取模运算，得到模值

byte iCode = (byte) (sum % fMod);

return CheckCode.substring(iCode,iCode+1);

}

//判断串长度的合法性

private static boolean checkLength(final String idCard,boolean newIDFlag){

boolean right = (idCard.length() == oldIDLen) || (idCard.length() == newIDLen);

newIDFlag = false;

if(right){

newIDFlag = (idCard.length() == newIDLen);

}

return right;

}

//获取时间串

private static String getIDDate(final String idCard,boolean newIDFlag){

String dateStr = "";

if(newIDFlag)

dateStr = idCard.substring(fPart,fPart+8);

else

dateStr = yearFlag + idCard.substring(fPart,fPart+6);

return dateStr;

}

//判断时间合法性

private static boolean checkDate(final String dateSource){

String dateStr = dateSource.substring(0,4)+"-"+dateSource.substring(4,6)+"-"+dateSource.substring(6,8);

System.out.println(dateStr);

DateFormat df = DateFormat.getDateInstance();

df.setLenient(false);

try {

Date date= df.parse(dateStr);

return (date!=null);

} catch (ParseException e) {

// TODO Auto-generated catch block

return false;

}

}

//旧身份证转换成新身份证号码

public static String getNewIDCard(final String oldIDCard){

//初始化方法

Identity.setWiBuffer();

if(!checkIDCard(oldIDCard)){

return oldIDCard;

}

String newIDCard = oldIDCard.substring(0, fPart);

newIDCard += yearFlag;

newIDCard += oldIDCard.substring(fPart, oldIDCard.length());

String ch = getCheckFlag(newIDCard);

newIDCard += ch;

return newIDCard;

}