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利用終端鏈接，出現了這個問題，網上的方法也嘗試過，沒有成功，求解決方法。