[英]Save data to MongoDB using NodeJS
我试图将数据传递给MongoDB
集合,并且返回Cannot POST /courseweb/course/add
在通过axios
传递值之前,我尝试过postman
(google扩展程序)来发送数据。
这是我的server.js
这与实施expressjs
const express = require("express");
const app = express();
const bodyParser = require("body-parser");
const Bundler = require("parcel-bundler");
const cors = require("cors");
const mongoose = require("mongoose");
const InstructorDB = require('./public/DBModels/InstructorDB');
const router = express.Router();
const bundler = new Bundler("./src/index.html");
app.use(cors());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(bundler.middleware());
// app.use(express.static('./src'));
app.use("/courseweb", router);
mongoose.connect("mongodb://127.0.0.1:27017/courseweb", {
useNewUrlParser: true
});
const connection = mongoose.connection;
connection.once("open", () => {
console.log("Connected to MongoDB via 27017");
});
app.listen(3000, err => {
if (err) {
console.error(err);
process.exit(-1);
}
console.log("Application is running on port 3000");
});
app.get("/", function(req, res) {
res.sendFile("./dist/index.html");
});
router.route('/course/add').post((req, res) => {
let instructorDB = new InstructorDB(req.body);
instructorDB.save().then(bookDB => {
res.status(200).send(`${bookDB} Added`);
}).catch((err) => {
res.status(400).send({message: err});
});
});
router.route('/courses').get((req, res) => {
// name of the course database model here
InstructorDB.find().count(function(err, count){
res.status(200).send(count);
});
});
这是我的InstructorDB.js
,它是mongoose
的模式模型
const mongoose= require('mongoose');
const Schema = mongoose.Schema;
let InstructorDB = new Schema({
firstName: String,
lastName: String,
designation: String,
faculty: String,
contactNumber: Number,
email: String,
password: String,
isEnabaled: Boolean,
courses: [{courseID: String}]
});
module.exports = mongoose.model('InstructorDB', InstructorDB, 'InstructorDB');
这是一个屏幕截图,以及当我通过postman
传递值时得到的响应。 我也将标头设置为content-type
和application/json
谁能告诉我我哪里出问题了?
如果要将路由器放入同一文件中,则不需要路由器。
尝试使用以下语法:
app.post('/coureweb/course/add',((req, res) => {
let instructorDB = new InstructorDB(req.body);
instructorDB.save().then(bookDB => {
res.status(200).send(`${bookDB} Added`);
}).catch((err) => {
res.status(400).send({message: err});
});
}));
然后取出
app.use("/courseweb")
确保通过发帖请求发送正确的数据,并将动词更改为post
:
app.post('/course/add', (req, res) => {
if(req.body == null){
return res.status(400).send({message: 'bad request'});
}
let instructorDB = new InstructorDB(req.body);
instructorDB.save((err ,doc ) => {
if(err){
res.status(400).send({message: err});
}
res.status(200).send(`Added`);
});
});
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