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node.js Express 创建RESTful API


0.项目机构

node.js Express 创建RESTful API_数据库连接

1.package.js 安装mongoose依赖和body-parser依赖

{
"name": "test",
"version": "0.0.0",
"private": true,
"scripts": {
"start": "node ./bin/www"
},
"dependencies": {
"body-parser": "^1.18.3",
"cookie-parser": "~1.4.3",
"debug": "~2.6.9",
"express": "~4.16.0",
"http-errors": "~1.6.2",
"mongoose": "^5.1.6",
"morgan": "~1.9.0",
"pug": "2.0.0-beta11"
}
}

npm install mongoose --save npm install body-parser --save

2. app.js 加数据库连接,还有router

这边在mongodb中创建了一个xiaohua1的database

var mongoose = require('mongoose');

mongoose.connect('mongodb://article:123456@localhost:27017/xiaohua1')

var apiRouter = require('./routes/api')

app.use('/api', apiRouter)

3.models/xiaohua.js

var mongoose = require('mongoose');

var Schema = mongoose.Schema;

var XiaohuaSchema = new Schema({
title : String
})


module.exports = mongoose.model('Xiaohua', XiaohuaSchema)

4.routes/api.js

Route

HTTP Verb

Description

/api/xiaohuas

​GET​

Get all the xiaohuas.

/api/xiaohuas

​POST​

Create a xiaohua.

/api/xiaohuas/:xiaohua_id

​GET​

Get a single xiaohua.

/api/xiaohuas/:xiaohua_id

​PUT​

Update a xiaohua with new info.

/api/xiaohuas/:xiaohua_id

​DELETE​

Delete a xiaohua.

var express = require('express');
var router = express.Router();



var Xiaohua = require('../models/xiaohua')


// middleware to use for all requests
router.use(function(req, res, next) {
// do logging
console.log('Something is happening.');
next(); // make sure we go to the next routes and don't stop here
});
/* GET home page. */
router.get('/', function(req, res, next) {
res.json({ message: 'hooray! welcome to our api!' });
});



router.route('/xiaohuas')

.post(function(req, res) {

var xiao = new Xiaohua();
xiao.title = req.body.title;

// save the bear and check for errors
xiao.save(function(err) {
if (err)
res.send(err);

res.json({ message: 'Xiao created!' });
});

})

.get(function(req, res) {
Xiaohua.find(function(err, xiaohuas) {
if (err)
res.send(err);

res.json(xiaohuas);
});
});





router.route('/xiaohuas/:xiaohua_id')

.get(function(req, res) {
Xiaohua.findById(req.params.xiaohua_id, function(err, xiaohua) {
if (err)
res.send(err);
res.json(xiaohua);
});
})

.put(function(req, res) {

// use our bear model to find the bear we want
Xiaohua.findById(req.params.xiaohua_id, function(err, xiaohua) {

if (err)
res.send(err);

xiaohua.title = req.body.title;

// save the xiaohua
xiaohua.save(function(err) {
if (err)
res.send(err);

res.json({ message: 'Xiaohua updated!' });
});

});
})


.delete(function(req, res) {
Xiaohua.remove({
_id: req.params.xiaohua_id
}, function(err, xiaohua) {
if (err)
res.send(err);

res.json({ message: 'Successfully deleted' });
});
});

module.exports = router;


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