druid加解密

1. 加密
   进到druid jar包目录下执行（每次执行的结果都不一样）：

java -cp druid-1.2.3.jar com.alibaba.druid.filter.config.ConfigTools 密码

会打印出privateKey、publicKey和password
2. 解密

public static void main(String[] args) throws Exception {
        String publickey = "publicKey";
        String password = ConfigTools.decrypt(publickey,"密码");
        System.out.println(password);
}