node.js使用restify開發REST web services
來自: http://itjhdev.github.io/2016/02/22/nodejs-restify-restapi-mysql/
文章主要包括restify開發api,node.js連接mysql返回json數據等。
restify簡介
restify 是一個基于Nodejs的REST應用框架,支持服務器端和客戶端。 restify 比起 express 更專注于 REST 服務,去掉了 express 中的 template , render 等功能,同時強化了 REST 協議使用,版本化支持, HTTP 的異常處理。
Github: node-restify
API: API DOCUMENTATION
restify安裝
- 新建項目
mkdir nodejs_restify cd nodejs_restify npm install restify
出現以下內容表示安裝成功
restify@4.0.4 ../../../../node_modules/restify ├── assert-plus@0.1.5 ├── tunnel-agent@0.4.2 ├── escape-regexp-component@1.0.2 ├── keep-alive-agent@0.0.1 ├── negotiator@0.5.3 ├── mime@1.3.4 ├── lru-cache@2.7.3 ├── formidable@1.0.17 ├── node-uuid@1.4.7 ├── qs@3.1.0 ├── semver@4.3.6 ├── spdy@1.32.5 ├── once@1.3.3 (wrappy@1.0.1) ├── http-signature@0.11.0 (ctype@0.5.3, asn1@0.1.11) ├── verror@1.6.1 (core-util-is@1.0.2, extsprintf@1.2.0) ├── vasync@1.6.3 (verror@1.6.0) ├── backoff@2.4.1 (precond@0.2.3) ├── csv@0.4.6 (csv-generate@0.0.6, csv-stringify@0.0.8, stream-transform@0.1.1, csv-parse@1.0.1) ├── bunyan@1.7.0 (safe-json-stringify@1.0.3, moment@2.11.2, mv@2.1.1) └── dtrace-provider@0.6.0 (nan@2.2.0)
- 創建rest服務
touch app.js
- app.js內容
var restify = require('restify');
function respond(req, res, next) {
res.send('hello ' + req.params.name);
next();
}
var server = restify.createServer({
name: 'ds_api',
version: '1.0.0'
});
server.get('/hello/:name', respond);
server.head('/hello/:name', respond);
server.listen(8081, function() {
console.log('%s listening at %s', server.name, server.url);
});- 啟動服務
node app.js listening at http://[::]:8081
- 使用 curl 測試
curl -is http://localhost:8081/hello/mark HTTP/1.1 200 OK Content-Type: application/json Content-Length: 12 Date: Mon, 22 Feb 2016 06:57:42 GMT Connection: keep-alive "hello mark"
OK,我們創建了一個8080端口的rest服務,包括 /hello/:name 接口.
更多內容可以訪問 API DOCUMENTATION
Mysql服務
- 安裝mysql
npm install felixge/node-mysql
- 在 app.js 創建服務
// 連接mysql
var mysql = require('mysql');
var conn = mysql.createConnection({
host: ‘ip’,
user: ‘user’,
password: ‘pasw’,
database:'ds_video',
port: 3306
});- 重寫 逗視 獲取視頻的接口
server.get('queryListVideo/:vid/:count/:type/:userId',function respond(req, res, next) {
conn.query( {
sql: 'select distinct v.title as title,v.id,v.url as videoUrl ,v.pic,v.type,v.createTime as pushTime ,'+
'(select count(*) from `tb_user_video` tub WHERE tub.`status` = 1 AND tub.userId = ? AND tub.videoId = v.id) as isCollectStatus'+
' from `tb_video` v where'+
' v.title != "" AND v.title not like "%#%" AND v.title not like "%@%" AND v.title not like "%微%" '+
' AND v.title not like "%秒拍%" AND v.title not like "%號%" '+
' AND v.title not like "%美拍%" '+
' AND type = ? '+
'ORDER BY id DESC LIMIT ?' ,
values: [req.params.userId,req.params.type,parseInt(req.params.count)]
},
function(err, rows, fields) {
if (err) throw err;
console.log('The title is: ', title = rows[0].title);
res.send(200, res.json(rows));
});
return next();
});創建了 queryListVideo 服務, /:vid/:count/:type/:userId 參數,
:vid 格式傳遞參數,
req.params.vid 獲取參數值
res.json(rows) 數據json格式輸出
res.send(200, res.json(rows)); 服務返回值 200 HTTP狀態碼, res.json(rows) 數據
conn.query( {
sql: ’sql語句 ?’,
values: [] // ? 填充值
},
function(err, rows, fields) { //數據庫返回數據
if (err) throw err;
res.send(200, res.json(rows));
});OK,我們測試一下吧!
服務地址: http://127.0.0.1:8081/queryListVideo/0/10/2/1
返回內容:
[
{
"title": "我也是醉了",
"id": 37729,
"videoUrl": "http://mvvideo2.meitudata.com/56c8a0c08e10d5457.mp4",
"pic": "http://mvimg1.meitudata.com/56c8a0bfef7c11168.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T18:11:33.000Z",
"isCollectStatus": 0
},
{
"title": "女神如此難追",
"id": 37727,
"videoUrl": "http://mvvideo2.meitudata.com/56c7de946f8bb3420.mp4",
"pic": "http://mvimg11.meitudata.com/56c8150c4fe9d9762.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T18:11:32.000Z",
"isCollectStatus": 0
},
{
"title": "一個瘋子+一個傻子=兩張大餅臉?精彩活動?問:視頻中我說了幾個啥玩意兒完全即興某人還不知道規則",
"id": 37726,
"videoUrl": "http://mvvideo1.meitudata.com/56c8a0186f59d9869.mp4",
"pic": "http://mvimg2.meitudata.com/56c8a10eaa5394719.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T18:11:32.000Z",
"isCollectStatus": 0
},
{
"title": "爆笑歌詞梗",
"id": 37704,
"videoUrl": "http://mvvideo1.meitudata.com/56c0438416f2a3712.mp4",
"pic": "http://mvimg10.meitudata.com/56c832793e9705833.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T17:14:14.000Z",
"isCollectStatus": 0
},
{
"title": "情感專線-拜金女的那些事兒",
"id": 37701,
"videoUrl": "http://gslb.miaopai.com/stream/Lqn~dQ1tbuJ5KNkc~LAG1A__.m3u8",
"pic": "http://wsacdn3.miaopai.com/stream/Lqn~dQ1tbuJ5KNkc~LAG1A___m.jpg",
"type": 2,
"pushTime": "2016-02-20T17:14:13.000Z",
"isCollectStatus": 0
},
{
"title": "一網友說她家鸚鵡笑起來好像她奶奶[笑cry]",
"id": 37696,
"videoUrl": "http://gslb.miaopai.com/stream/59hdWRg61qsMMwvT5BXPNg__.mp4?vend=miaopai&59hdWRg61qsMMwvT5BXPNg__.mp4miaopai",
"pic": "http://wsacdn1.miaopai.com/stream/59hdWRg61qsMMwvT5BXPNg___tmp_11_363_.png",
"type": 2,
"pushTime": "2016-02-20T17:14:11.000Z",
"isCollectStatus": 0
},
{
"title": "捉迷藏1 這當爹的心太大了吧!這不擺明了坑兒子么?!",
"id": 37681,
"videoUrl": "http://gslb.miaopai.com/stream/fKPmQViX6eytWcD6XxR2Yw__.mp4?vend=miaopai&fKPmQViX6eytWcD6XxR2Yw__.mp4miaopai",
"pic": "http://wsqncdn.miaopai.com/stream/fKPmQViX6eytWcD6XxR2Yw___m.jpg",
"type": 2,
"pushTime": "2016-02-20T16:12:51.000Z",
"isCollectStatus": 0
},
{
"title": "聚會上最裝逼的人",
"id": 37664,
"videoUrl": "http://mvvideo1.meitudata.com/56c7fbce28caf6036.mp4",
"pic": "http://mvimg1.meitudata.com/56c703002a0dc7724.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T15:22:30.000Z",
"isCollectStatus": 0
},
{
"title": "現在的女生真的很現實",
"id": 37659,
"videoUrl": "http://mvvideo2.meitudata.com/56c87dd4057812379.mp4",
"pic": "http://mvimg2.meitudata.com/56c87ded57b056131.jpg!thumb320",
"type": 2,
"pushTime": "2016-02-20T15:22:26.000Z",
"isCollectStatus": 0
},
{
"title": "斷奶篇-唱回到過去",
"id": 37658,
"videoUrl": "http://gslb.miaopai.com/stream/aeNf6EQmnzUo4J22Ms~Tfg__.mp4?vend=miaopai&aeNf6EQmnzUo4J22Ms~Tfg__.mp4miaopai",
"pic": "http://wsqncdn.miaopai.com/stream/aeNf6EQmnzUo4J22Ms~Tfg___m.jpg",
"type": 2,
"pushTime": "2016-02-20T15:22:25.000Z",
"isCollectStatus": 0
}
]e???e???完成了今天的任務了。
總結
我們初步學會了創建 REST API 服務,在 node.js 中連接 mysql 以及 sql 的使用。但是這樣的代碼還有很多需要改進的地方,這是我們下一步要做的。
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