var http = require("http"); function start(app) { var httpServer = http.createServer(app); process.on('uncaughtException', function(e) {   console.log(e); }); var server = app.listen(8888, function () { var host = server.address().address var port = server.address().port console.log("应用实例,访问地址为 https://%s:%s", host, port) }) } exports.start = start;