java.sql.SQLException: null, message from server: "Host '59.41.160.220' is not allowed to connect to this MySQL server"

java.sql.SQLException: null, message from server: "Host '59.41.160.220' is not allowed to connect to this MySQL server"是一个错误消息，表示指定的主机（59.41.160.220）没有权限连接到MySQL服务器。这通常是由于MySQL服务器的访问控制列表（ACL）配置导致的。

要解决这个问题，可以采取以下步骤：
1. 登录到MySQL服务器。
2. 运行以下命令以授予指定主机的访问权限：
GRANT ALL PRIVILEGES ON *.* TO 'username'@'59.41.160.220' IDENTIFIED BY 'password';
其中，'username'是您希望使用的用户名，'59.41.160.220'是您希望授予访问权限的主机IP地址，'password'是您希望使用的密码。
3. 刷新MySQL权限以使更改生效：
FLUSH PRIVILEGES;
4. 退出MySQL服务器。

通过执行上述步骤，您应该能够解决java.sql.SQLException: null, message from server: "Host '59.41.160.220' is not allowed to connect to this MySQL server"错误，并允许指定主机连接到MySQL服务器。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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