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);

$ cd 08_EXPRESSREST
$ node app

//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);

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;