Java校验身份证合法性 （通过火车票上显示的号码计算身份证号）

今天看到优快云推送的消息《我用 Python 算出了同事的身份证号码》自己也想用Java写一个！ 

当然稍稍改一下就能做身份证合法校验！

下面贴代码！

package test;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.Hashtable;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class IdCardUtil {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		for(int k=1;k<=12;k++){
			List<String> list =getDayListOfMonth(k);
			for(int i=0;i<list.size();i++){
				/***
				 * idcard=身份证号  这里是我自己写着玩的  在不知道同事的生日情况下  查出正确的身份证号   
				 * 
				 * 要想做校验直接用IdCardNumberVerification 
				 * 
				 * **/  
			
				String idcard ="6222011996"+list.get(i)+"2728";
				if(IdCardNumberVerification(idcard)){
					System.out.println(idcard);
				}
			}
			System.out.println("============================================");
		}
	}
	
	
	/**
    * 获取当月所有天
    * @return
    */
   public static List<String> getDayListOfMonth(int mon) {
       List<String> list = new ArrayList<String>();
       
       Calendar time=Calendar.getInstance(); 
		time.clear(); 
		time.set(Calendar.MONTH,mon-1);//Calendar对象默认一月为0            
		int day=time.getActualMaximum(Calendar.DAY_OF_MONTH);//本月份的天数
       
       
       int month = time.get(Calendar.MONTH)+1;//月份
       for (int i = 1; i <= day; i++) {
    	   String months="";
    	   String days="";
    	   if(month<10){
    		   months = "0"+month;
    	   }else{
    		   months =month+"";
    	   }
    	   if(i<10){
    		   days="0"+i;
    	   }else{
    		   days=i+"";
    	   }
    	   String aDate = months+days;
           list.add(aDate);
       }
       return list;
   }
	
	 /**
     *身份证验证
     * @param idStr
     * @return 校验信息，correct为成功，失败会返回对应的失败原因
     */
    public static boolean IdCardNumberVerification(String idStr){
        String[] wf = { "1", "0", "X", "9", "8", "7", "6", "5", "4", "3", "2" };
        String[] checkCode = { "7", "9", "10", "5", "8", "4", "2", "1", "6", "3", "7", "9", "10", "5", "8", "4", "2" };
        String iDCardNo = "";
        try {
            //判断号码的长度 15位或18位
            if (idStr.length() != 15 && idStr.length() != 18) {
                return false;
            }
            if (idStr.length() == 18) {
                iDCardNo = idStr.substring(0, 17);
            } else if (idStr.length() == 15) {
                iDCardNo = idStr.substring(0, 6) + "19" + idStr.substring(6, 15);
            }
            if (isStrNum(iDCardNo) == false) {
                return false;
            }
            //判断出生年月
            String strYear = iDCardNo.substring(6, 10);// 年份
            String strMonth = iDCardNo.substring(10, 12);// 月份
            String strDay = iDCardNo.substring(12, 14);// 月份
            if (isStrDate(strYear + "-" + strMonth + "-" + strDay) == false) {
                return false;
            }
            GregorianCalendar gc = new GregorianCalendar();
            SimpleDateFormat s = new SimpleDateFormat("yyyy-MM-dd");
            if ((gc.get(Calendar.YEAR) - Integer.parseInt(strYear)) > 150 || (gc.getTime().getTime() - s.parse(strYear + "-" + strMonth + "-" + strDay).getTime()) < 0) {
                return false;
            }
            if (Integer.parseInt(strMonth) > 12 || Integer.parseInt(strMonth) == 0) {
                return false;
            }
            if (Integer.parseInt(strDay) > 31 || Integer.parseInt(strDay) == 0) {
                return false;
            }
            //判断地区码
            Hashtable h = GetAreaCode();
            if (h.get(iDCardNo.substring(0, 2)) == null) {
                return false;
            }
            //判断最后一位
            int theLastOne = 0;
            for (int i = 0; i < 17; i++) {
                theLastOne = theLastOne + Integer.parseInt(String.valueOf(iDCardNo.charAt(i))) * Integer.parseInt(checkCode[i]);
            }
            int modValue = theLastOne % 11;
            String strVerifyCode = wf[modValue];
            iDCardNo = iDCardNo + strVerifyCode;
            
            if (idStr.length() == 18 && !iDCardNo.equals(idStr)) {
                return false;
            }
            
        }catch (Exception e){
            e.printStackTrace();
        }
        return true;
    }

    /**
     * 地区代码
     * @return Hashtable
     */
    private static Hashtable GetAreaCode() {
        Hashtable<String,String> hashtable = new Hashtable<String,String>();
        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;
    }
    /**
     * 判断字符串是否为数字
     * @param str
     * @return
     */
    private static boolean isStrNum(String str) {
        Pattern pattern = Pattern.compile("[0-9]*");
        Matcher isNum = pattern.matcher(str);
        if (isNum.matches()) {
            return true;
        } else {
            return false;
        }
    }
    /**
     * 判断字符串是否为日期格式
     * @param strDate
     * @return
     */
    public static boolean isStrDate(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);
        if (m.matches()) {
            return true;
        } else {
            return false;
        }
    }

}