1.开始
下载源码：https://github.com/sayar/NodeMVA
Express组件：npm install express -g（全局安装）
2.ExpressRest
打开目录08_ExpressREST
app.js
var express = require('express');
var app = express();
//捕获GET方法，并处理返回一个Json，比C#写Json简单多了啊
app.get('/', function (req, res) {
res.json({ message: 'hooray! welcome to our api!' });
});
//侦听8080端口
app.listen(process.env.PORT || 8080);
现在项目都用html/js了，写个node几行代码搞定json restful，还带web服务器，感觉神清气爽啊！
打开CMD让项目运行起来
$ cd 08_EXPRESSREST
$ node app
3.AdvancedRESTAPI
打开目录12_AdvancedRESTAPI
app.js：初始化Express环境注册路由
routes/api.js ：rest api的具体实现代码
app.js中，注册路由代码十分简单
//初始化一个api.js实例
var api = require('./routes/api'); //初始化一个express.js实例
var app = express(); //将指定url路由处理程序指向api.js文件
app.use('/api', api);
routes/api.js中对每个api后的url按GET\PUT\POST\DELETE分别处理
|
Resource |
GET |
PUT |
POST |
DELETE |
|
Collection URI, such as http://api.example.com/v1/dogs/ |
List all the dogs |
Replace all the dogs with a new collection of dogs. |
Create a new dog in the collection. |
Delete the entire dog collection. |
|
Element URI, such as http://api.example.com/v1/dog/1 |
Get a specific dog. |
Replace a dog in the collection with another dog. |
Not used. |
Delete the dog from the collection. |
var express = require('express');
var router = express.Router();
var dogs = [
{
"dog_id": "0",
"dog_name": "Ginger"
},
{
"dog_id": "1",
"dog_name": "Ruby"
},
{
"dog_id": "2",
"dog_name": "Buddy"
}
];
/* GET all dogs */
router.get('/dogs/', function(req, res, next) {
res.json(dogs);
});
/* PUT replace all dogs */
router.put('/dogs/', function(req, res, next) {
console.log(req.body);
dogs = req.body;
res.json({"STATUS": "200 OK"});
});
/* POST create a new dog */
router.post('/dogs/', function(req, res, next) {
dogs.push(req.body)
res.json({"STATUS": "200 OK"});
});
/* DELETE delete the entire dog collection */
router.delete('/dogs/', function(req, res, next) {
dogs = [];
res.json({"STATUS": "200 OK"});
});
/* GET a specific dog */
router.get('/dogs/:id', function(req, res, next) {
var i = 0;
var dog = null;
for(i = 0; i != dogs.length; i++){
if(dogs[i].dog_id == req.params.id){
dog = dogs[i];
break;
}
}
dog !== null ? res.json(dog) : res.json({"STATUS": "404 NOT FOUND"})
});
/* PUT replace a specific dog with another dog */
router.put('/dogs/:id', function(req, res, next) {
var i = 0;
var dog = null;
for(i = 0; i != dogs.length; i++){
if(dogs[i].dog_id == req.params.id){
dog = dogs[i];
break;
}
}
if(dog !== null){
dog.dog_name = req.body['dog_name']
res.json({"STATUS": "200 OK"});
} else {
res.json({"STATUS": "404 NOT FOUND"});
}
});
/* DELETE a specific dog from the collection */
router.delete('/dogs/:id', function(req, res, next) {
var i = 0;
for(i = 0; i != dogs.length; i++){
if(dogs[i].dog_id == req.params.id){
dogs.splice(i, 1);
return res.json({"STATUS": "200 OK"});
}
}
return res.json({"STATUS": "404 NOT FOUND"});
});
module.exports = router;