前端開發的朋友們,不免會有要模拟假資料的時候,當然你的項目中有模拟資料的配置(如mock)則更好;
但是當僅僅就是想起個服務端,模拟點假資料便于開發調用,那麼今天就給大家介紹一種快捷有效的方法:
express+mockjs搭建資料服務
現隻模拟一下四個接口供參考:
http://127.0.0.1:30001/api/users get請求 清單資料
http://127.0.0.1:30001/api/users/123456 get請求 單條資料
http://127.0.0.1:30001/api/users post請求 新增資料
http://127.0.0.1:30001/api/users/123456 put請求 修改單條資料
http://127.0.0.1:30001/api/users/123456 delete請求 删除單條資料
話不多說,上貨
1建立目錄demo mkdir demo 進入 cd demo
2建立package.json檔案,寫入:
{
"name": "express-mock",
"version": "1.0.0",
"description": "express+mockjs搭建資料服務",
"main": "index.js",
"dependencies": {
"body-parser": "^1.18.3",
"express": "^4.16.3",
"mockjs": "^1.0.1-beta3"
},
"devDependencies": {},
"scripts": {
"start": "node index"
},
"author": "Heavy",
"license": "ISC"
}
3建立index.js檔案,寫入:
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
require('./mock/user')(app); //user資料
var server = app.listen(30001, function () {
var host = server.address().address;
var port = server.address().port;
console.log('App listening at http://%s:%s', host, port);
});
4建立目錄mock mkdir mock 進入 cd mock
(1)mock目錄下建立user.js檔案,寫入:
let Mock = require('mockjs');
let db=Mock.mock({
'data|50-100':[{
id:'@id',
name:'@cname',
'age|18-100':1,
create_time:'@datetime',
avatar:function() {
return Mock.Random.image('100x100',Mock.Random.color(),Mock.Random.string('upper', 3))
},
address:'@county(true)',
email:'@email',
love_color:'@color',
'description':'@csentence(20, 40)'
}]
});
module.exports = function (app) {
//擷取清單資料
app.get('/api/users', function (req, res) {
let pagesize=req.headers&&req.headers.pagesize;
let current=req.headers&&req.headers.current;
res.header('total', db.data.length);
res.status(200).json(db.data.slice((current-1)*pagesize,current*pagesize));
});
//擷取單個詳情
app.get('/api/users/:id', function (req, res) {
let id=req.params.id;
let info={
data:{}
};
db.data.map(item=>{
if(item.id==id){
info.data=item
}
})
res.status(200).json(info);
});
//新增一條資料post
app.post('/api/users', function (req, res) {
let user=req.body;
user.id=Mock.mock('@id');
db.data.push(user);
res.status(200).json(user);
});
//修改一條資料put
app.put('/api/users/:id', function (req, res) {
let id=req.params.id;
let user=req.body;
user.id=id;
db.data.map((item,index)=>{
if(item.id==id){
db.data[index]=user;
}
})
res.status(200).json(user);
});
//删除一條資料delete
app.delete('/api/users/:id', function (req, res) {
let id=req.params.id;
db.data.map((item,index)=>{
if(item.id==id){
db.data.splice(index,1);
}
})
res.status(200).json({id:id});
});
}
(2)傳回主目錄demo cd ../
5 yarn install 或npm(cnpm) install 安裝包
6 yarn start 啟動服務,列印‘App listening at http://:::30001’,即OK了。
此時通路:http://127.0.0.1:30001/api/users 看,資料出來了,postman試一下:
同理,對應增删改查均OK!!!
若要支援跨域通路,可修改index.js如下:
var express = require('express');
var app = express();
var bodyParser = require('body-parser');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
//跨域通路,允許接受跨域請求
app.all('*', function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "*");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By",' 3.2.1')
res.header("Content-Type", "application/json;charset=utf-8");
next();
})
require('./mock/user')(app); //user資料
require('./mock/contract')(app); //contract資料
require('./mock/meeting')(app); //meeting資料
require('./mock/invoice')(app); //invoice資料
require('./mock/enterprise')(app); //enterprise資料
require('./mock/fileresource')(app); //fileresource資料
require('./mock/acs_api')(app); //fileresource資料
require('./mock/smartplugs')(app); //smartplugs資料
require('./mock/cipicture')(app); //cipicture資料,裝置外觀
require('./mock/ticketTopo')(app); //ticketTopo資料,事件綁定拓撲
require('./mock/notes')(app); //notes資料,白闆筆記
require('./mock/interfaces')(app); //interfaces資料,主機端口新版
require('./mock/hostProblems')(app); //hostProblems資料,主機監控資訊
var server = app.listen(30001, function () {
var host = server.address().address;
var port = server.address().port;
console.log('Example app listening at http://%s:%s', host, port);
});
推薦參考:
http://mockjs.com/examples.html
http://www.expressjs.com.cn/