如果你想連接你的mysql的時候發生這個錯誤：
ERROR 1130: Host '192.168.16.145' is not allowed to connect to this MySQL server
改表法。
可能是你的帳號不允許從遠程登陸，只能在localhost。這個時候只要在localhost的那臺電腦，登入mysql後，更改 "mysql" 數據庫裏的 "user" 表裏的 "host" 項，從"localhost"改稱"%"
mysql -u root -pvmwaremysql>use mysql;mysql>update user set host = '%' where user = 'root';mysql>select host, user from user;
2. 授權法。
（1）例如：你想myuser使用mypassword從任何主機連接到mysql服務器的話
GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
（2）如果你想允許用戶myuser從ip爲192.168.16.145的主機連接到mysql服務器，並使用mypassword作爲密碼
GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.16.145' IDENTIFIED BY 'mypassword' WITH GRANT OPTION;
（3）最後這句一定一定要加上！！！
mysql>flush privileges;
出現如下錯誤：
Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. java.net.ConnectException: Connection refused: connect
這時候，你需要登錄到服務器裏面按照如下方法設置你的mysql並重啓mysql
vim /etc/mysql/my.cnf
將配置裏面的bind-address = 127.0.0.1
這一項改成bind-address = 0.0.0.0
取消MySQL Server 綁定本地地址！
之後保存退出(wq)
sudo /etc/init.d/mysql restart (重啓mysql服務) 或者sudo service mysql restart