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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