MySQL workbench 报错

今天安装数据库，使用cmd连接mysql无任何问题，但是使用mysql连接是报错：

[Window Title]
MySQL Workbench

[Main Instruction]
Cannot Connect to Database Server

[Content]
Your connection attempt failed for user 'root' from your host to server at 127.0.0.1:3306:
  Can't get hostname for your address

Please:
1 Check that mysql is running on server 127.0.0.1
2 Check that mysql is running on port 3306 (note: 3306 is the default, but this can be changed)
3 Check the root has rights to connect to 127.0.0.1 from your address (mysql rights define what clients can connect to the server and from which machines) 
4 Make sure you are both providing a password if needed and using the correct password for 127.0.0.1 connecting from the host address you're connecting from

[Close]

其中错误信息里面有一句：

Can't get hostname for your address

找不到我主机 的hostname

Google了很多，最终从这个网址

点击打开链接

发现，将连接设置中的Hostname “127.0.0.1”改成：“::1”

即可成功连接到数据库。

如图：