我已经使用nginx在AWS EC2示例上部署了一个全栈React/Node应用程序，并面临CORS策略问题，我已经在代码中解决了这个问题
x1c 0d1x的数据
Index.js

const express = require('express');
const cors = require('cors');
require('dotenv').config();

const app = express()
const port = process.env.PORT || 5000;

// midleware to use API Endpoints
const corsOptions = {
  origin: 'http://13.200.107.25'
}
app.use(express.json());
app.use(cors(corsOptions));

// Serving client react app build 
const path = require('path');
const _dirname = path.dirname("");
const buildPath = path.join(_dirname , "../client/build");

app.use(express.static(buildPath));

app.get('/*', (req, res) => {
  res.sendFile(
    path.join(__dirname, "../client/build/index.html"),
    (err) => {
      if(err)
      {
        res.status(500).send(err);
      }
    }
  )
})

//Available Routes
app.use('/api/auth', require('./Routes/authRoute'));
// app.use('/api/notes', require('./Routes/notes'))

app.listen(port, () => {
  console.log(`iNotebook listening at http://localhost:${port}`)
})

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我使用pm2启动后端服务器，它也为我的react应用程序的../client/build提供服务

的
我已经更改了/etc/nginx/sites-available/default文件的配置

server {
   listen 80 default_server;
   listen [::]:80 default_server;
    
   server_name _;
   
   location / {
        proxy_pass http://localhost:5000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection upgrade;
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
}

型
我已经重新启动了pm2和nginx，并使用sudo nginx -t测试了nginx语法配置，结果成功
我在index.js中给出了corsOptions作为参数

// midleware to use API Endpoints
const corsOptions = {
  origin: 'http://13.200.107.25'
}
app.use(express.json());
app.use(cors(corsOptions));

型