用MSI直接裝的，啟動的時候出現問題，請問如何解決下面是我的日志文件：C:UsersAdministrator>mongoMongoDB shell version v3.4.7connecting to: mongodb://127.0.0.1:270172017-08-16T23:45:23.316+0800 W NETWORK [thread1] Failed to connect to 127.0.:27017 after 5000ms milliseconds, giving up.2017-08-16T23:45:23.317+0800 E QUERY [thread1] Error: couldn't connect tover 127.0.0.1:27017, connection attempt failed :connect@src/mongo/shell/mongo.js:237:13@(connect):1:6exception: connect failed