有效期到2018-11-15号
administrator
nLR8ZC-855550-6366605820061671
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class MyEclipseGen {
private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";
public String getSerial(String userId, String licenseNum) {
Calendar cal = Calendar.getInstance();
cal.add(1, 3);// 增加三年
cal.add(6, -1); // 减去一天
licenseNum = new DecimalFormat("000").format(Integer.valueOf(licenseNum));
String verTime = new StringBuilder("-").append(new SimpleDateFormat("yyMMdd").format(cal.getTime())).append("0").toString();
String type = "YE3MP-";
String need = new StringBuilder(userId.substring(0, 1)).append(type).append("300").append(licenseNum).append(verTime).toString();
String dx = new StringBuilder(need).append(LL).append(userId).toString();
int suf = this.decode(dx);
String code = new StringBuilder(need).append(String.valueOf(suf)).toString();
return this.change(code);
}
/**
* 根据 一句话进行编码 获取一个编码数字
* @param s
* @return
*/
private int decode(String s) {
char[] ac = s.toCharArray();
int i = 0, j = 0, k = ac.length;
while (j < k) {
i = (31 * i) + ac[j];
j++;
}
return Math.abs(i); // i 是一个非累加值，但每次循环i值都不一样
}
/**
* 再次编译一下 code
* @param s
* @return
*/
private String change(String s) {
byte[] code = s.getBytes();
char[] ac = new char[s.length()];
int i = 0, j , k = code.length;
while (i < k) {
j = code[i];
if ((j >= 48) && (j <= 57)) {
j = (((j - 48) + 5) % 10) + 48;
} else if ((j >= 65) && (j <= 90)) {
j = (((j - 65) + 13) % 26) + 65;
} else if ((j >= 97) && (j <= 122)) {
j = (((j - 97) + 13) % 26) + 97;
}
ac[i] = (char) j;
i++;
}
return String.valueOf(ac);
}
public static void main(String[] args) {
try {
System.out.println("please input register name:");
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
String userId = null;
userId = reader.readLine();
MyEclipseGen myeclipsegen = new MyEclipseGen();
String res = myeclipsegen.getSerial(userId, "5");
System.out.println("Serial:" + res);
reader.readLine();
} catch (IOException ex) {
}
}
}