我按照教程使用mongoDB作为应用程序，你有link。在安装mongodb时，我在9:50停留并且命令运行启动mongod是mongod --directoryperdb --dbpath c:\mongodb\data\db --logpath c:\mongodb\log\mongo.log --logappend -rest --install
在我的Mac上，我的桌面上有我的项目和mongo目录，所以我按照上面的视频安装了mongod。使用mongod --directoryperdb --dbpath /Usr/me/Desktop/mongodb/data/db --logpath /Usr/me/Desktop/mongodb/log/mongo.log --logappend -rest --install启动mongod指向不同的数据目录时遇到问题。
并且它不起作用（我还将bin文件复制到我的local/bin目录
以下是错误。
events.js:160
throw er; // Unhandled 'error' event
^
MongoError: failed to connect to server [localhost:27017] on first connect [MongoError: connect ECONNREFUSED 127.0.0.1:27017]
at Pool.<anonymous> (/Users/houssamtoulni/Desktop/proget/node_modules/mongodb-core/lib/topologies/server.js:328:35)
at emitOne (events.js:96:13)
at Pool.emit (events.js:188:7)
at Connection.<anonymous> (/Users/houssamtoulni/Desktop/proget/node_modules/mongodb-core/lib/connection/pool.js:280:12)
at Connection.g (events.js:292:16)
at emitTwo (events.js:106:13)
at Connection.emit (events.js:191:7)
at Socket.<anonymous> (/Users/houssamtoulni/Desktop/proget/node_modules/mongodb-core/lib/connection/connection.js:177:49)
at Socket.g (events.js:292:16)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at emitErrorNT (net.js:1277:8)
at _combinedTickCallback (internal/process/next_tick.js:80:11)
at process._tickCallback (internal/process/next_tick.js:104:9)