搭建微服务器:express+https+api代理
概述
最近打算玩一下service worker,但是service worker只能在https下跑,所以查资料自己用纯express搭建了一个微服务器,把过程记录下来,供以后开发时参考,相信对其他人也有用。
参考资料:express官方文档
http服务器
首先我们用express搭建一个http服务器,很简单,看看官方文档就可以搭建出来了。代码如下:
// 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
我们的理想状况是,在项目目录下建立一个server文件夹,然后在server文件夹里面启动服务器,加载项目目录下的dist文件夹。
所以我们加入代码解析静态资源:
// 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
我们想把http变成https,首先我们要生成本地证书:
brew install mkcert
mkcert localhost 127.0.0.1 ::1
上面的代码意思是说,先安装mkcert,然后用mkcert给localhost,127.0.0.1和::1这三个域名生成证书。
然后我们可以在文件夹下面看到2个文件:
秘钥:example.com+3-key.pem
公钥:example.com+3.pem
我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)
添加完之后我们把秘钥和公钥放在certificate文件夹,然后添加到credentials.js文件中,我们通过这个文件引入秘钥和公钥:
// 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
};
最后我们把http变成https,并且引入秘钥和公钥:
// 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,我们经常遇到跨域问题,在开发时我们是通过devServer的proxyTable解决的,而proxyTable在打包后是无效的。所以我们需要在服务器上面代理api请求。代码如下:
// 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里面是一样的,因为devServer底层也是通过express实现的。
然后我们在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
最后我们把server.js,credentials.js和proxy.js放在一起就好了啦!
用法:只需要把整个文件夹放到项目目录,在里面运行下面的指令就好了:
yarn i
node server.js
详细代码可以参考我的github