Question

每当我在8081/list_user上提出请求时，都没有回应。当我打开localhost:8081时，我得到了回复，但没有得到localhost:8081/list_user。两个文件都在同一个文件夹中是否有任何问题。请检查此问题是什么问题。

    // grab the things we need schema.js file
    var mongoose = require('mongoose');
    var Schema = mongoose.Schema;

    // create a schema
    var userSchema = new Schema({
      name: String,
    });

    // the schema is useless so far
    // we need to create a model using it
    var User = mongoose.model('User', userSchema);

    // make this available to our users in our Node applications
    console.log("Schema")
    module.exports = User;


    ////////////Next file
    var express = require('express');
    var app = express();
    var User = require('./schema');

    // This responds with "Hello World" on the homepage
    app.get('/', function (req, res) {
       console.log("Got a GET request for the homepage",User);
       res.send('Hello GET');
    })

    // This responds a POST request for the homepage
    app.post('/', function (req, res) {
       console.log("Got a POST request for the homepage");
       res.send('Hello POST');
    })

    // This responds a DELETE request for the /del_user page.
    app.delete('/del_user', function (req, res) {
       console.log("Got a DELETE request for /del_user");
       res.send('Hello DELETE');
    })

    // This responds a GET request for the /list_user page.
    app.get('/list_user', function (req, res) {
       console.log("Got a GET request for /list_user");
      var newUser = User({
      name: 'Peter Quill',

      });

    // save the user
    newUser.save(function(err) {
      if (err) throw err;
    res.send('User created!');
      console.log('User created!');

    });


    })

    // This responds a GET request for abcd, abxcd, ab123cd, and so on
    app.get('/find', function(req, res) {   
       User.find({}, function(err, users) {
      if (err) throw err;

      // object of all the users
      console.log(users);
    res.send(users)

    });

    })

    var server = app.listen(8081, function () {

       var host = server.address().address
       var port = server.address().port

       console.log("Example app listening at http://%s:%s", host, port)
    })

Answer 1

当我测试.save函数的方式时，我甚至无法收到错误消息。我所做的是添加与本地数据库（在模式文件）的连接以进行正确测试。

mongoose.connect（＆＃39; mongodb的：//本地主机/测试＆＃39）;

为了做到这一点，首先你必须证明你有一个本地mongodb服务器正在运行（或者你可以只连接到在线服务器），mongoose.connect接收我的连接字符串作为参数（＆＃34; test＆＃ 34;是数据库名称，如果它不存在，它将自动创建）。我做的最后一件事是在创建用户时添加 new 。

var newUser = new User({
    name: 'teste',
});

没有得到任何保存响应

1 个答案: