最新の18ビット認証

package test;

public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {		
		Test t = new Test();
		String certNo="130925198512055555";
		boolean tt= t.convertCert(certNo);
		if(tt){
			System.out.println(" ");
		}else{
			System.out.println(" ");		
		}
	}
	public static boolean convertCert(String certNo){
		try{
			if(certNo.trim().length()!=18){
				return false;
			}
			
			String tempStr = certNo.substring(0,17);//certNo.substring(0,6)+"19"+certNo.substring(6);
			System.out.println(tempStr);
			String checkCode = "";
			int[] a = new int[17];
			int i = 0;
			while(i<17){
				a[i] = Integer.parseInt(tempStr.substring(i,i+1));
				i++;
			}
			int mod = (a[0]*7+a[1]*9+a[2]*10+a[3]*5+a[4]*8+a[5]*4+a[6]*2+a[7]*1+a[8]*6+a[9]*3+a[10]*7
				+a[11]*9+a[12]*10+a[13]*5+a[14]*8+a[15]*4+a[16]*2)%11;
			switch (mod){
				case 10:		checkCode = "2";	break;
				case 9:		checkCode = "3";	break;
				case 8:		checkCode = "4";	break;
				case 7:		checkCode = "5";	break;
				case 6:		checkCode = "6";	break;
				case 5:		checkCode = "7";	break;
				case 4:		checkCode = "8";	break;
				case 3:		checkCode = "9";	break;
				case 2:		checkCode = "x";	break;
				case 1:		checkCode = "0";	break;
				case 0:		checkCode = "1";	break;
			}
			
			String sourceCheckCode = certNo.substring(17,18);			
			if(sourceCheckCode.equalsIgnoreCase(checkCode)){
				return true;
			}else{
				return false;			
			}			
		}catch(Exception e){
			e.printStackTrace();
			return false;
		}
		
	} 
}