.new-item {
display: inline-block;
width: 230px;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;/* 不允许换行 */
}
-
✎ Express
-
✉ 官方文档
-
➀ 使用教程
- 安装: http://www.expressjs.com.cn/starter/installing.html
- Hello world example: http://www.expressjs.com.cn/starter/hello-world.html
- Express 应用程序生成器: http://www.expressjs.com.cn/starter/generator.html
1、cmd --> npm install express --save
// ../build/webpack.dev.conf.js
2、原来
const express = require('express')
const app = express()
app.get('/', (req, res) => res.send('Hello World!'))
app.listen(3000, () => console.log('Example app listening on port 3000!'))
3、变成
// 官方例子 app.get('/', (req, res) => res.send('Hello World!'))
apiRouter.route('/:apiName')
.all(function(req, res) {
fs.readFile('./db.json', 'utf8', function(err, data) {
if (err) throw err
var data = JSON.parse(data)
if (data[req.params.apiName]) {
res.json(data[req.params.apiName])
} else {
res.send('no such api name')
}
})
})
app.use('/api', apiRouter);
// 官方例子 app.listen(8081, () => console.log('Example app listening on port 8081!'))
app.listen(8081, function(err) {
if (err) {
console.log(err)
return
}
console.log('Listening at http://localhost:8081')
})
/* express 2020-01-17 19:17 end */
-
➁ ../build/webpack.dev.conf.js 整体代码
'use strict'
const utils = require('./utils')
const webpack = require('webpack')
const config = require('../config')
const merge = require('webpack-merge')
const path = require('path')
const baseWebpackConfig = require('./webpack.base.conf')
const CopyWebpackPlugin = require('copy-webpack-plugin')
const HtmlWebpackPlugin = require('html-webpack-plugin')
const FriendlyErrorsPlugin = require('friendly-errors-webpack-plugin')
const portfinder = require('portfinder')
/*// server.js
const jsonServer = require('json-server')
const apiServer = jsonServer.create()
const apiRouter = jsonServer.router('db.json')
const middlewares = jsonServer.defaults()
apiServer.use('/api', apiRouter)
apiServer.use(middlewares)
apiServer.use(apiRouter)
apiServer.listen(8081, () => {
console.log('JSON Server is running')
})
apiServer.use('/api', apiRouter) */
/* express 2020-01-17 19:17 start */
const express = require('express')
const app = express()
var bodyParser = require('body-parser')/* 用它返回json数据 */
app.use(bodyParser.urlencoded({
extended: true
}))
app.use(bodyParser.json())
var apiRouter = express.Router()
var fs = require('fs') /* 通过node的fs去取db.json */
// 官方例子 app.get('/', (req, res) => res.send('Hello World!'))
apiRouter.route('/:apiName')
.all(function(req, res) {
fs.readFile('./db.json', 'utf8', function(err, data) {
if (err) throw err
var data = JSON.parse(data)
if (data[req.params.apiName]) {
res.json(data[req.params.apiName])
} else {
res.send('no such api name')
}
})
})
app.use('/api', apiRouter);
// 官方例子 app.listen(8081, () => console.log('Example app listening on port 8081!'))
app.listen(8081, function(err) {
if (err) {
console.log(err)
return
}
console.log('Listening at http://localhost:8081')
})
/* express 2020-01-17 19:17 end */
const HOST = process.env.HOST
const PORT = process.env.PORT && Number(process.env.PORT)
const devWebpackConfig = merge(baseWebpackConfig, {
module: {
rules: utils.styleLoaders({
sourceMap: config.dev.cssSourceMap,
usePostCSS: true
})
},
// cheap-module-eval-source-map is faster for development
devtool: config.dev.devtool,
// these devServer options should be customized in /config/index.js
devServer: {
clientLogLevel: 'warning',
historyApiFallback: {
rewrites: [{
from: /.*/,
to: path.posix.join(config.dev.assetsPublicPath, 'index.html')
}, ],
},
hot: true,
contentBase: false, // since we use CopyWebpackPlugin.
compress: true,
host: HOST || config.dev.host,
port: PORT || config.dev.port,
open: config.dev.autoOpenBrowser,
overlay: config.dev.errorOverlay ? {
warnings: false,
errors: true
} : false,
publicPath: config.dev.assetsPublicPath,
proxy: config.dev.proxyTable,
quiet: true, // necessary for FriendlyErrorsPlugin
watchOptions: {
poll: config.dev.poll,
},
},
plugins: [
new webpack.DefinePlugin({
'process.env': require('../config/dev.env')
}),
new webpack.HotModuleReplacementPlugin(),
new webpack.NamedModulesPlugin(), // HMR shows correct file names in console on update.
new webpack.NoEmitOnErrorsPlugin(),
// https://github.com/ampedandwired/html-webpack-plugin
new HtmlWebpackPlugin({
filename: 'index.html',
template: 'index.html',
inject: true
}),
// copy custom static assets
new CopyWebpackPlugin([{
from: path.resolve(__dirname, '../static'),
to: config.dev.assetsSubDirectory,
ignore: ['.*']
}])
]
})
module.exports = new Promise((resolve, reject) => {
portfinder.basePort = process.env.PORT || config.dev.port
portfinder.getPort((err, port) => {
if (err) {
reject(err)
} else {
// publish the new Port, necessary for e2e tests
process.env.PORT = port
// add port to devServer config
devWebpackConfig.devServer.port = port
// Add FriendlyErrorsPlugin
devWebpackConfig.plugins.push(new FriendlyErrorsPlugin({
compilationSuccessInfo: {
messages: [`Your application is running here: http://${devWebpackConfig.devServer.host}:${port}`],
},
onErrors: config.dev.notifyOnErrors ?
utils.createNotifierCallback() : undefined
}))
resolve(devWebpackConfig)
}
})
})
-
➂ 测试请求
http://localhost:8080/api/getNewsList
-
➃ 总结
如果你的项目都是使用Get请求,就可以使用json-server没有问题,如果你的项目中使用了其他的请求,则需要使用到express自己写一个api路由('/:apiName')