[js]node app.js
Express server listening on port

events.js:68
throw arguments[1]; // Unhandled ‘error’ event
^
Error: listen EADDRINUSE
at errnoException (net.js:769:11)
at HTTPServer.Server._listen2 (net.js:909:14)
at listen (net.js:936:10)
at HTTPServer.Server.listen (net.js:985:5)
at Object. (/Users/xujingbao/Desktop/microblog/app.js:58:5)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.runMain (module.js:492:10)[/js]

这种情况八成是app.listen(3001);这个端口被占用了，换一个！