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com.webapp.utils.string.IDUtils Maven / Gradle / Ivy
package com.webapp.utils.string;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
/**
* 身份证检验类
*/
public final class IDUtils {
//校验加权因子数组
private static final int[] checkCodes = new int[]{7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};
private ID id; //身份证号码
private List errorMsgs = new ArrayList<>(); //非法信息集合
private String addr = ""; //地址信息
public static IDUtils of(String num) {
return new IDUtils(num);
}
/*
* 构造方法
* @param num 身份证字符串,18位
*/
private IDUtils(String num) {
this.id = new ID(num.length() >= 18 ? num : "0000000000000000000");
}
/*
* 获取中文格式的出生年月日
* @return
*/
public String getBirth(){
return id.getBirth().substring(0, 4) + "年" + id.getBirth().substring(4,6) + "月" + id.getBirth().substring(6,8) + "日";
}
/*
* 获取性别
* @return 男 女
*/
public String getSex() {
return id.getSeq().charAt(2)%2 == 0 ? "女" : "男";
}
/*
* 获得地址
* @return
*/
public String getAddr(){
if("".equals(addr)) {
checkAddr();
}
return addr;
}
/*
* 总的身份证验证
* 验证顺序：长度 - 生日 - 最后一位校验码 - 地址
* @return 身份证合法则返回true，否则false
*/
public boolean checkAll(){
//验证长度 //验证生日 //验证最后一校验码 //验证地址
if(!checkLength()) { //验证长度
return false; //长度都不对，其他的就不用验证了
}
return checkBirth() & checkCode() & checkAddr() ? true : false;
}
/*
* 检查身份证长度是否正确
* @return 长度为18则返回true，否则返回false
*/
public boolean checkLength(){
int length = id.getNum().length();
if(length == 18) {
return true;
}
errorMsgs.add("身份证长度不正确");
return false;
}
/*
* 验证身份证出生年月日是否合法
* @return 合法返回true,否则返回false
*/
public boolean checkBirth(){
String birth = id.getBirth();
int year, month, day; //年月日
try{
year = Integer.valueOf(birth.substring(0,4));
month = Integer.valueOf(birth.substring(4,6));
day = Integer.valueOf(birth.substring(6, 8));
} catch (NumberFormatException e) {
errorMsgs.add("身份证生日码不正确！");
return false;
}
if((year >= 1900 && year <= 2010) && (month >=1 && month <= 12) && (day >= 1 && day <= 31)) {
return true;
}
errorMsgs.add("身份证生日码不正确！");
return false;
}
/*
* 验证地址码是否存在
* @return 存在返回true，不存在返回false
*/
public boolean checkAddr(){
String addrCode = id.getAddr();
addr = readAddress(addrCode);
if(addr == null) {
errorMsgs.add("身份证地址码不正确！");
return false;
}
return true;
}
/*
* 验证校验码是否正确
* @return 正确返回true，否则返回false
*/
public boolean checkCode(){
String chCode = caculateCheckCode(id.getNum()); //计算正确的末位校验码
if(!id.getCheck().equalsIgnoreCase(chCode)){
errorMsgs.add("身份证校验码不正确, 正确的校验码是 " + chCode);
return false;
}
return true;
}
/*
* 取得错误信息
* @return
*/
public String getErrorMsg(){
return errorMsgs.size() > 0 ? errorMsgs.get(0) : "";
}
/*
* 取得错误信息集合
* @return
*/
public List getErrorMsgs() {
return errorMsgs;
}
/*
* 分离身份证号码
* @return 整型数组，最后一位若是'X'，则返回10
*/
public static final int[] toInt(String num){
int[] ins = new int[18];
int i = 0;
for( ; i < ins.length - 1; i ++) {
ins[i] = Integer.valueOf(num.substring(i, i+1));
}
String last = num.substring(i, i+1);
ins[i] = "X".equals(last) ? 10 : Integer.valueOf(last);
return ins;
}
/*
* 计算校验位
* @return
*/
private static final String caculateCheckCode(String num){
int total = 0; //校验值和
int[] ins = new int[18];
try{
for(int i = 0; i < ins.length - 1; i ++) {
ins[i] = Integer.valueOf(num.substring(i, i+1));
total += (ins[i]*checkCodes[i]);
}
} catch(NumberFormatException e) {
return null;
}
int modResult = total % 11;
String result = null;
//校验码对应值: 1 0 X 9 8 7 6 5 4 3 2
switch (modResult) {
case 0:
result = "1";
break;
case 1:
result = "0";
break;
case 2:
result = "X";
break;
case 3:
result = "9";
break;
case 4:
result = "8";
break;
case 5:
result = "7";
break;
case 6:
result = "6";
break;
case 7:
result = "5";
break;
case 8:
result = "4";
break;
case 9:
result = "3";
break;
case 10:
result = "2";
break;
default:
break;
}
return result;
}
/*
* 读取地址码
* @param addrNum
* @return 若存在，则返回该地址码对应的地址名称，若不存在，返回null
*/
private static final String readAddress(String addrNum) {
char first = addrNum.charAt(0);
if(first == '1' || first == '2' || first == '3' || first == '4' || first == '5' || first == '6'){
String filePath = "/address/" + first + ".dic";
String addr = readAddress(filePath, "UTF-8", addrNum);
return addr;
}
return null;
}
/*
* 读取地址码是否存在
* @param filePath 文件路径
* @param charset 文件编码
* @param addrNum 地址码，6位数字
* @return 存在返回地址名称，否则返回null
*/
private static final String readAddress(String filePath, String charset, String addrNum){
String addr = null;
try {
InputStream is = IDUtils.class.getResourceAsStream(filePath);
BufferedReader buffReader = new BufferedReader(new InputStreamReader(is,charset));
String line;
while((line = buffReader.readLine()) != null){
if(addrNum.equals(line.substring(0,6))) {
addr = line.substring(7, line.length());
break;
}
}
buffReader.close();
} catch (FileNotFoundException e) {
System.err.println("找到不地址码文件");
e.printStackTrace();
} catch (IOException e) {
System.err.println("读取地址码文件失败");
e.printStackTrace();
}
return addr;
}
private class ID {
private String num; //全长身份证号码
private String addr; //地址
private String birth; //生日
private String seq; //序号
private String check; //校验码
public ID(String num) {
this.num = num;
this.addr = num.substring(0, 6);
this.birth = num.substring(6, 14);
this.seq = num.substring(14,17);
this.check = num.substring(17,18);
}
public String getAddr() {
return addr;
}
public String getBirth() {
return birth;
}
public String getSeq() {
return seq;
}
public String getCheck() {
return check;
}
public String getNum() {
return num;
}
}
}
