mongodb 获取数据库里的所有collection名称
mongodb get_collection_names with mongoose.connection
npm install —save get_collection_names
var get_collection_names = require('get_collection_names');
var host = "127.0.0.1";
var port = "27017";
var db = "express-g-demo";
//
get_collection_names(host, port, db, function(err, names){
console.log(names);
})