随机生成 imsi imei mac

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http://blog.csdn.net/argonwu/article/details/42971909

private static String getIMEI() {// calculator IMEI

int r1 = 1000000 + new java.util.Random().nextInt(9000000);


int r2 = 1000000 + new java.util.Random().nextInt(9000000);


String input = r1 + “” + r2;


char[] ch = input.toCharArray();


int a = 0, b = 0;


for (int i = 0; i < ch.length; i++) {


int tt = Integer.parseInt(ch[i] + “”);


if (i % 2 == 0) {


a = a + tt;


} else {


int temp = tt * 2;


b = b + temp / 10 + temp % 10;


}


}


int last = (a + b) % 10;


if (last == 0) {


last = 0;


} else {


last = 10 – last;


}


return input + last;


}

private static String getImsi() {


// 460022535025034


String title = “4600”;


int second = 0;


do {


second = new java.util.Random().nextInt(8);


} while (second == 4);


int r1 = 10000 + new java.util.Random().nextInt(90000);


int r2 = 10000 + new java.util.Random().nextInt(90000);


return title + “” + second + “” + r1 + “” + r2;


}


private static String getMac(){


char[] char1 = “abcdef”.toCharArray();


char[] char2 = “0123456789”.toCharArray();


StringBuffer mBuffer = new StringBuffer();


for (int i = 0; i < 6; i++) {


int t = new java.util.Random().nextInt(char1.length);


int y = new java.util.Random().nextInt(char2.length);


int key = new java.util.Random().nextInt(2);


if (key ==0) {


mBuffer.append(char2[y]).append(char1[t]);


}else {


mBuffer.append(char1[t]).append(char2[y]);


}





if (i!=5) {


mBuffer.append(“:”);


}


}


return mBuffer.toString();


}