Webpack最簡單的方式Mock API

webpack-api-mocker 是一個爲 REST API 建立 mock 的 webpack-dev-server 中間件。 當您嘗試在沒有實際的 REST API 服務器的狀況下,測試您的應用程序時,這將會頗有幫助。css

安裝

npm install webpack-api-mocker --save-dev

使用

定義API,假設咱們講API放到一個獨立文件 mocker/index.js 中, 下面咱們定義四個 API,每一個 API 都放到 jsonkeyvalue 中,以下:html

const proxy = {
  'GET /api/user': {id: 1, username: 'kenny', sex: 6 },
  'GET /api/user/list': [
    {id: 1, username: 'kenny', sex: 6 },
    {id: 2, username: 'kenny', sex: 6 }
  ],
  'POST /api/login/account': (req, res) => {
    const { password, username } = req.body;
    if (password === '888888' && username === 'admin') {
      return res.send({
        status: 'ok',
        code: 0,
        token: "sdfsdfsdfdsf",
        data: {id: 1, username: 'kenny', sex: 6 }
      });
    } else {
      return res.send({status: 'error', code: 403 });
    }
  },
  'DELETE /api/user/:id': (req, res) => {
    console.log('---->', req.body)
    console.log('---->', req.params.id)
    res.send({ status: 'ok', message: '刪除成功!' });
  }
}
module.exports = proxy;

上面的 key 比較特殊,由 methdpath 組合,中間一個空格間隔,如:GET /api/uservalue 能夠是 json 或者 函數webpack

在 Webpack 中使用

要在你的 Webpack 項目中使用 api mocker,只需將設置選項,添加到你的 webpack-dev-server 選項中便可:git

改變你的配置文件,告訴dev服務器在哪裏查找文件:webpack.config.js。github

const path = require('path');
const HtmlWebpackPlugin = require('html-webpack-plugin');
+ const apiMocker = require('webpack-api-mocker');

module.exports = {
  entry: {
    app: './src/index.js',
    print: './src/print.js'
  },
  devtool: 'inline-source-map',
+ devServer: {
+   ...
+   before(app){
+     apiMocker(app, path.resolve('./mocker/index.js'), {
+       proxy: {
+         '/repos/*': 'https://api.github.com/',
+       },
+       changeHost: true,
+     })
+   }
+ },
  plugins: [
    new HtmlWebpackPlugin({
      title: 'Development'
    })
  ],
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist')
  }
};

模擬API代理變得簡單。web

{
  before(app){
+   apiMocker(app, path.resolve('./mocker/index.js'), {
+     proxy: {
+       '/repos/*': 'https://api.github.com/',
+     },
+     changeHost: true,
+   })
  }
}

讓咱們添加一個腳原本輕鬆運行開發服務器:express

修改 package.jsonnpm

{
  "name": "development",
  "version": "1.0.0",
  "description": "",
  "main": "webpack.config.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "watch": "webpack --progress --watch",
+   "start": "webpack-dev-server --open",
    "build": "webpack"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "clean-webpack-plugin": "^0.1.16",
    "css-loader": "^0.28.4",
    "csv-loader": "^2.1.1",
    "file-loader": "^0.11.2",
    "html-webpack-plugin": "^2.29.0",
    "style-loader": "^0.18.2",
    "webpack": "^3.0.0",
    "xml-loader": "^1.2.1"
  }
}

運行下面命令,跑起來,經過工具測試一下你模擬的API是否能返回結果。json

npm run start

Express 中使用

const path = require('path');
const express = require('express');
+ const apiMocker = require('webpack-api-mocker');

const app = express();

+ apiMocker(app, path.resolve('./mocker/index.js'))
app.listen(8080);
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