mysql连接错误

mysql安装完成后
使用:
#mysql -u root -p 可以进入mysql
但是用jdbc不能访问，报
ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 111
编辑/etc/mysql/my.cnf
注释# skip-networkin
添加 bind-address =your server ip

出现 ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 104
编辑/etc/mysql/my.cnf
[mysqld] 段增加一个启动参数
skip-name-resolve

ERROR 2013 (HY000): Lost connection to MySQL server at 'reading initial communication packet', system error: 0
编辑/etc/hosts.allow，加上这一行
mysqld: ALL