mongodb链接问题。

Question

flytutu@flytutu-X550JK:~$ mongoMongoDB shell version: 3.2.6connecting to: test2016-06-02T12:30:02.242+0800 W NETWORK  [thread1] Failed to connect to 127.0.0.1:27017, reason: errno:111 Connection refused2016-06-02T12:30:02.242+0800 E QUERY    [thread1] Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed :connect@src/mongo/shell/mongo.js:229:14@(connect):1:6exception: connect failed利用终端链接，出现了这个问题，网上的方法也尝试过，没有成功，求解决方法。