Java实现身份证号码的验证

迷彩 1月前 ⋅ 129 阅读

摘要:

Java实现身份证号码的验证

代码:

package cn.gov.csrc.util;
 
/**
 * 18 位身份证验证器
 * 
 * @author admin
 * 
 */
public class IDCard {
 
	final int[] wi = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2, 1 };
	final int[] vi = { 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 };
	private int[] ai = new int[18];
 
	public IDCard() {
	}
 
	public boolean Verify(String idcard) {
		if (idcard.length() == 15) {
			idcard = uptoeighteen(idcard);
		}
		if (idcard.length() != 18) {
			return false;
		}
		String verify = idcard.substring(17, 18);
		if (verify.equals(getVerify(idcard))) {
			return true;
		}
		return false;
	}
 
	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]);
	}
 
	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;
	}
 
	public static void main(String[] args) {
		String idcard1 = "350211197607142059";
		String idcard2 = "350211197607442059";
 
		IDCard idcard = new IDCard();
		System.out.println(idcard.Verify(idcard1));
		System.out.println(idcard.Verify(idcard2));
		System.out.println(idcard.Verify(idcard3));
	}
}

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