/etc/network 下：interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.1.111
netmask 255.255.255.0
gateway 192.168.1.1

/etc/ 下：resolv.conf

nameserver 8.8.8.8

配置好后，/etc/init.d/networking restart 网卡重启即可！