数据未使用 node.js 插入 mongodb

Question

你好，我是 nodejs 的新手，并试图在 mongodb 中插入数据，但它没有插入，并且没有显示错误，并且在页面提交上显示“无法 POST /crud”，任何解决它的参考或建议（记住没有显示错误）

架构（Crud.js）：

   const mongoose = require('mongoose');
   mongoose.connect('mongodb://localhost/node_web', {useNewUrlParser: true});

   var crudSchema = new mongoose.Schema({
      crud_name: {
         type: String
      },
      crud_email: {
         type: String
      },
      crud_mobile: {
         type: String
      }
  });

  mongoose.model('Crud', crudSchema );

创建.ejs：

   <form method="POST" action="/crud">
     <div class="form-group">
        <label for="inputAddress">Name</label>
        <input type="text" name="crud_name" class="form-control" id="inputAddress" placeholder="Enter your name">
     </div>
     <div class="form-group">
        <label for="inputAddress">Email</label>
        <input type="email" name="crud_email" class="form-control" id="inputAddress" placeholder="Enter your email">
     </div>
     <div class="form-group">
        <label for="inputAddress">Mobile</label>
        <input type="number" name="crud_mobile" class="form-control" id="inputAddress" placeholder="Enter your mobile">
     </div>
     <button type="submit" class="btn btn-primary">Submit</button>
   </form>

控制器：

    const express = require('express');
    var router = express.Router();
    const mongoose = require('mongoose');
    const Crud = mongoose.model('Crud');

    router.get('/',(req, res) => {
      res.render("crud", {crud : new Crud(), newCrud : true});
    });

    router.post('/', (req, res) => {
       if (true)
          insertRecord(req, res);
    });

    function insertRecord(req, res) {
        var crud = new Crud();
        crud.crud_name = req.body.crud_name;
        crud.crud_email = req.body.crud_email;
        crud.crud_mobile = req.body.crud_mobile;
        // Save methods
        crud.save((err, doc) => {
          if (!err)
             res.redirect('crud');
          else {
            console.log('Error during record insertions : ' + err);
          }
      });  
    }

db连接成功：

  var mongoose = require('mongoose');
  mongoose.connect('mongodb://localhost/node_web', {useNewUrlParser: true});

  var db = mongoose.connection;
  db.on('error', console.error.bind(console, 'connection error:'));
  db.once('open', function(err) {
  if (err) throw err;
     console.log('Successfully connected');
  });

Answer 1

在您的控制器中，您应该通过将 URL 指定为来获取发布请求，

router.post('/crud', (req, res) => {
// Rest of the method..

});

Answer 2

创建一个 app.js 文件并将其添加到那里

const crudRoutes = require('./crudRoutes');
app.use('/crud',crudRoutes);

创建一个路由文件并执行以下操作

const express = require('express');
const crudController = require('./crudController')
const router = express.Router();
router.post('/crud', crudController.crud_process)
module.exports = router

在控制器文件中

 const mongoose = require('mongoose');
 const Crud = require('./crudModel') // ur schema file
 exports.crud_process = (req, res, next) => {
    // ur query 
  })

有关完整的详细信息，您可以在这里查看我的一个项目，我这样做是为了学习 nodejsapiproject

Answer 3

const express = require('express');
    var router = express.Router();
    const mongoose = require('mongoose');
    const Crud = mongoose.model('Crud');

    router.get('/',(req, res) => {
      res.render("crud", {crud : new Crud(), newCrud : true});
    });

    router.post('/', (req, res) => {
       if (true)
          insertRecord(req, res);
    });

    function insertRecord(req, res) {
        var crud = new Crud({
          crud_name:req.body.crud_name,
          crud_email : req.body.crud_email,
          crud_mobile : req.body.crud_mobile
});

        // Save methods
        crud.save((err, doc) => {
          if (!err)
             res.redirect('crud');
          else {
            console.log('Error during record insertions : ' + err);
          }
      });  
    }