一、错误描述

某一天打开MyEclipse,突然发现出现如下提示框:

1.错误日志

Thank you for choosing MyEclipse

Your license expired 1091 days ago.

To continue use of MyEclipse please choose "Buy" to purchase a MyEclipse license. If you already have a MyEclipse license code choose "Unlock" to enter your license details and resume use of MyEclipse

2.错误说明

感谢您选择MyEclipse

您的许可证已于1091天前过期。

要继续使用MyEclipse,请选择“购买”购买MyEclipse许可证。如果您已经拥有MyEclipse许可证代码,请选择“解锁”以输入许可证详细信息并继续使用MyEclipse

二、解决方案

从错误日志很明显的可以看出来是由于MyEclipse注册码过期导致的,所以这时就需要我们提供新的有效的注册码即可。

1、将所在设备的系统时间回滚至注册码有效期内以确保MyEclipse正常打开使用

2、在MyEclipse中新建一个java project (命名随意,例:abc)

3、在src目录下新建一个MyEclipseGen的类将如下的代码复制到该类中,并运行。

import java.text.DecimalFormat;

import java.text.NumberFormat;

import java.text.SimpleDateFormat;

import java.util.Calendar;

public class MyEclipseGen {

public static final void main(String[] args){

String subscriber = "Fgoatyy"; //subscriber

String licenseNum = "500"; //Number of Licenses

String version = "100"; //版本号

String subscriptionCode = getSubscriptionCode(subscriber, version , licenseNum ,true);

System.out.println(subscriptionCode); //gLR8ZO-655055-62677056522757051

}

public static String getSubscriptionCode( String subscriber, String version, String licenseNum, boolean selected) {

Calendar cal = Calendar.getInstance();

cal.add(1, 3); //年份加三年

cal.add(6, -1); //日期减一 //当前日期20141226,到期日期则为20171225

NumberFormat nf = new DecimalFormat("000");

licenseNum = nf.format(Integer.valueOf(licenseNum));

String verTime = selected ? (new StringBuffer("-")).append(

(new SimpleDateFormat("yyMMdd")).format(cal.getTime())).append("0").toString() : "-0812310";

String type = "YE3MB-";

String need = (new StringBuffer(String.valueOf(subscriber.substring(0, 1)))).append(type).append(version).append(licenseNum).append(verTime).toString();

String dx = (new StringBuffer(String.valueOf(need))).append("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.").append(subscriber).toString();

int suf = decode(dx);

String code = (new StringBuffer(String.valueOf(need))).append(String.valueOf(suf)).toString();

return change(code);

}

private static int decode(String s) {

int i = 0;

char ac[] = s.toCharArray();

int j = 0;

for (int k = ac.length; j < k; j++)

i = 31 * i + ac[j];

return Math.abs(i);

}

private static String change(String s) {

byte abyte0[] = s.getBytes();

char ac[] = new char[s.length()];

int i = 0;

for (int k = abyte0.length; i < k; i++) {

int j = abyte0[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;

}

return String.valueOf(ac);

}

}

4、按照提示输入注册名(随意输入),然后会自动产生注册码。

5、将设备系统时间调整正常,然后重新打开MyEclipseMyEclipse,点击Unlock按钮,按照提示输入注册名和注册码即可。

说明:

如果输入注册名和新生成的注册码后无法点击Finish按钮,说明生成的注册码无效,只需要重新运行代码直至生成有效的注册码为止(或换注册名重新生成)。

例如如下无效注册码提示:

1.过期

2.鉴别为伪造