搭建微服务器:express+https+api代理

概述

最近打算玩一下service worker,可是service worker只能在https下跑,因此查资料本身用纯express搭建了一个微服务器,把过程记录下来,供之后开发时参考,相信对其余人也有用。html

参考资料:express官方文档node

http服务器

首先咱们用express搭建一个http服务器,很简单,看看官方文档就能够搭建出来了。代码以下:git

// server.js
const express = require('express');
const http = require('http');

const app = express();
const PORT = 7088; // 写个合理的值就好
const httpServer = http.createServer(app);

app.get('/', function (req, res) {
  res.send('hello world');
});

httpServer.listen(PORT, function () {
  console.log('HTTPS Server is running on: http://localhost:%s', PORT);
});

加入到项目中

咱们的理想情况是,在项目目录下创建一个server文件夹,而后在server文件夹里面启动服务器,加载项目目录下的dist文件夹。github

因此咱们加入代码解析静态资源:express

// server.js
const express = require('express');
const http = require('http');

const app = express();
const PORT = 7088; // 写个合理的值就好
const httpServer = http.createServer(app);

app.use('/', express.static('../dist'));

httpServer.listen(PORT, function () {
  console.log('HTTPS Server is running on: http://localhost:%s', PORT);
});

加入https

咱们想把http变成https,首先咱们要生成本地证书api

brew install mkcert
mkcert localhost 127.0.0.1 ::1

上面的代码意思是说,先安装mkcert,而后用mkcert给localhost,127.0.0.1和::1这三个域名生成证书。跨域

而后咱们能够在文件夹下面看到2个文件:服务器

秘钥:example.com+3-key.pem
公钥:example.com+3.pem

咱们在钥匙串里面把公钥添加信任。方法可参考:在Vue里用Service Worker来搞个中间层(React同理)app

添加完以后咱们把秘钥和公钥放在certificate文件夹,而后添加到credentials.js文件中,咱们经过这个文件引入秘钥和公钥:微服务

// credentials.js
const path = require('path');
const fs = require('fs');

// 引入秘钥
const privateKey = fs.readFileSync(path.resolve(__dirname, './certificate/example.com+3-key.pem'), 'utf8');
// 引入公钥
const certificate = fs.readFileSync(path.resolve(__dirname, './certificate/example.com+3.pem'), 'utf8');

module.exports = {
  key: privateKey,
  cert: certificate
};

最后咱们把http变成https,而且引入秘钥和公钥:

// server.js
const express = require('express');
const https = require('https');
const credentials = require('./credentials');

const app = express();
const SSLPORT = 7081; // 写个合理的值就好
const httpsServer = https.createServer(credentials, app);

app.use('/', express.static('../dist'));

httpsServer.listen(SSLPORT, function () {
  console.log('HTTPS Server is running on: https://localhost:%s', SSLPORT);
});

设置api代理

在项目中,咱们常常遇到跨域问题,在开发时咱们是经过devServer的proxyTable解决的,而proxyTable在打包后是无效的。因此咱们须要在服务器上面代理api请求。代码以下:

// proxy.js
const proxy = require('http-proxy-middleware');

const authApi = 'your-authApi-address';
const commonApi = 'your-commonApi-address';

module.exports = app => {
  app.use('/api/auth', proxy({
    target: authApi,
    changeOrigin: true,
    pathRewrite: {
      '/api/auth': '/auth'
    },
    secure: false,
  }));

  app.use('/api/common', proxy({
    target: commonApi,
    changeOrigin: true,
    pathRewrite: {
      '/api/common': '/api'
    },
    secure: false,
  }));
};

写法和devServer里面是同样的,由于devServer底层也是经过express实现的。

而后咱们在server.js里面引入上面写的代理:

// server.js
const express = require('express');
const https = require('https');
const setProxy = require('./proxy');
const credentials = require('./credentials');

const app = express();
const SSLPORT = 7081; // 写个合理的值就好
const httpsServer = https.createServer(credentials, app);

app.use('/', express.static('../dist'));

setProxy(app);

httpsServer.listen(SSLPORT, function () {
  console.log('HTTPS Server is running on: https://localhost:%s', SSLPORT);
});

最后

最后咱们把server.js,credentials.js和proxy.js放在一块儿就行了啦!

用法:只须要把整个文件夹放到项目目录,在里面运行下面的指令就行了:

yarn i
node server.js

详细代码能够参考个人github

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