检查身份证
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); } } //验证身份证位数,15位和18位身份证 public boolean verifyLength(String code) { int length = code.length(); if (length == 15 || length == 18) { return true; } else { _codeError = "错误：输入的身份证号不是15位和18位的"; return false; } } //判断地区码 public boolean verifyAreaCode(String code) { String areaCode = code.substring(0, 2); // Element child= _areaCodeElement.getChild("_"+areaCode); if (areaCodeMap.containsKey(areaCode)) { return true; } else { _codeError = "错误：输入的身份证号的地区码(1-2位)[" + areaCode + "]不符合中国行政区划分代码规定(GB/T2260-1999)"; return false; } } //判断月份和日期 public boolean verifyBirthdayCode(String code) { //验证月份 String month = code.substring(10, 12); boolean isEighteenCode = (18 == code.length()); if (!dateMap.containsKey(month)) { _codeError = "错误：输入的身份证号" + (isEighteenCode ? "(11-12位)" : "(9-10位)") + "不存在[" + month + "]月份,不符合要求(GB/T7408)"; return false; } //验证日期 String dayCode = code.substring(12, 14); Integer day = dateMap.get(month); String yearCode = code.substring(6, 10); Integer year = Integer.valueOf(yearCode); //非2月的情况 if (day != null) { if (Integer.valueOf(dayCode) > day || Integer.valueOf(dayCode) < 1) { _codeError = "错误：输入的身份证号" + (isEighteenCode ? "(13-14位)" : "(11-13位)") + "[" + dayCode + "]号不符合小月1-30天大月1-31天的规定(GB/T7408)"; return false; } } //2月的情况 else { //闰月的情况 if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) { if (Integer.valueOf(dayCode) > 29 || Integer.valueOf(dayCode) < 1) { _codeError = "错误：输入的身份证号" + (isEighteenCode ? "(13-14位)" : "(11-13位)") + "[" + dayCode + "]号在" + year + "闰年的情况下未符合1-29号的规定(GB/T7408)"; return false; } } //非闰月的情况 else { if (Integer.valueOf(dayCode) > 28 || Integer.valueOf(dayCode) < 1) { _codeError = "错误：输入的身份证号" + (isEighteenCode ? "(13-14位)" : "(11-13位)") + "[" + dayCode + "]号在" + year + "平年的情况下未符合1-28号的规定(GB/T7408)"; return false; } } } return true; } //验证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 = "错误：输入的身份证号第" + (i + 1) + "位包含字母"; return false; } } return true; } public String getCodeError() { return _codeError; } //验证身份证 public boolean verify(String idcard) { _codeError = ""; //验证身份证位数,15位和18位身份证 if (!verifyLength(idcard)) { return false; } //验证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位的就转成18位的身份证 String eifhteencard = ""; if (idcard.length() == 15) { eifhteencard = uptoeighteen(idcard); } else { eifhteencard = idcard; } //验证身份证的地区码 if (!verifyAreaCode(eifhteencard)) { return false; } //判断月份和日期 if (!verifyBirthdayCode(eifhteencard)) { return false; } //验证18位校验码,校验码采用ISO 7064：1983，MOD 11-2 校验码系统 if (!verifyMOD(eifhteencard)) { return false; } return true; } //验证18位校验码,校验码采用ISO 7064：1983，MOD 11-2 校验码系统 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 = "错误：输入的身份证号最末尾的数字验证码错误"; return false; } //获得校验位 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位转18位身份证 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; } }
不知道哪里来的了，先放着。。
