javascript - 无法查看 JSON 数据

Question

我在 app.js 中有以下代码。

var express = require("express");
var app = express();
var port = 3001;
app.get("/", (req, res) => {
res.send("success");
});
app.listen(port, () => {
console.log("Server listening on port " + port);
});

var mongoose = require('mongoose');
mongoose.createConnection('mongodb://localhost:27017/mydb');
var Schema = mongoose.Schema;
var productSchema=new Schema({
 created_at: String,
 id: Number
  });

 const Products = mongoose.model("myc",productSchema);
 app.get('/',function(req,res){
 Products.find({},function(err,products){
  res.json(products)
  });
  })

 // module.exports = app;

我已经创建了 mongodb 数据库 mydb 和 myc 作为包含文档的集合。

当我输入 localhost:3000 时，我没有看到存储在 Mongodb 中的 JSON 数据，它只显示空白页。请帮忙

Answer 1

var express = require("express");
var app = express();
var port = 3001;
var mongoose = require('mongoose');
mongoose.createConnection('mongodb://localhost/mydb');
var Schema = mongoose.Schema;
var productSchema=new Schema({
created_at: String,
id: Number
});

const Products = mongoose.model("myc",productSchema);
app.get('/',function(req,res){
Products.find({},function(err,products){
if(!err){
res.json(products)
}
else{
res.send(err)
}
});
})
app.listen(port, () => {
console.log("Server listening on port " + port);
});
module.exports = app;