Tag: 平均值

使用grunt或节点服务器启动服务器时出错

我正在尝试使用这里描述的平均堆栈： http : //mean.io/ 安装完成后，制作“grunt”时出现错误： debugger listening on port 5858 4 Jan 01:47:40 – [nodemon] reading ignore list Express app started on port 3000 events.js:72 throw er; // Unhandled 'error' event ^ Error: failed to connect to [localhost:27017] at null.<anonymous> (/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:540:74) at EventEmitter.emit (events.js:106:17) at null.<anonymous> (/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:140:15) at EventEmitter.emit (events.js:98:17) at Socket.<anonymous> (/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection.js:478:10) at Socket.EventEmitter.emit […]