node和mongoDB的问题

Question

events.js:85      throw er; // Unhandled 'error' event            ^Error: connection closed    at null.<anonymous> (/Users/yuman/Documents/htdocs/Demo/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/server.js:608:24)    at emit (events.js:104:17)    at null.<anonymous> (/Users/yuman/Documents/htdocs/Demo/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection_pool.js:171:15)    at emit (events.js:110:17)    at Socket.<anonymous> (/Users/yuman/Documents/htdocs/Demo/mean/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection/connection.js:550:12)    at Socket.emit (events.js:107:17)    at TCP.close (net.js:485:12)源代码是MEAN web 开发一书里的，上面贴出来的的是报错有遇到过的请指导

Answer 1

你是不是没开mongodb的服务。