req.body 在服务器发送数据时为空,在本地工作

req.body is empty when sending data in server, in local works

我正在尝试将数据发送到 index.js,在本地主机上它工作正常,但是当我部署到我的服务器时它不工作。我看到问题似乎很相似: here。但它对我不起作用

client.js : 发送数据到 index.js /subscribeA

await fetch("https://example.com:30000/subscribeA", {
        method: "post",
        body: JSON.stringify({ dataSubscribe: subscription, dataNotif: dataNotif}),
        headers: {
            "Content-Type": "application/json"
        },
        mode : 'no-cors'
    });
    console.log("Push Sent...");
}

 

然后在 index.js 中:

var express = require('express');
const port = process.env.PORT || 30000;
const app = express();
const http = require('http');
const https = require('https');
const fs = require('fs');
var server = http.createServer(app);
const privateKey = fs.readFileSync('/etc/letsencrypt/live/example.com/privkey.pem', 'utf8');
const certificate = fs.readFileSync('/etc/letsencrypt/live/example.com/cert.pem', 'utf8');
const credintials = { key: privateKey, cert: certificate };
server = https.createServer(credintials, app);
server.listen(port, () => console.log(`Server started on port ${port}`));
const io = require("socket.io")(server, {
  // allowEIO3 = true,
  cors: {
credentials:true,
    origin: '*',
    methods: ["GET", "POST"]
  }
})
const webpush = require("web-push");
const bodyParser = require("body-parser");
const path = require("path");
// Set static path
app.use(express.static(path.join(__dirname)));
app.use(bodyParser.json());
const publicVapidKey =
  "BJthRQ5maDga7OSXsPC1ftGw-n16F7zQBEN7EUD6XxcfTTvrLGWSIG7y_JxiWtVlCFua0S8MTB5rPziBqNx1qIo";
const privateVapidKey = "3KsvdasAdSoCdsd0dIG_o9B0Ozvl1XDwI63JRKNIWBM";
webpush.setVapidDetails(
  "mailto:test@test.com",
  publicVapidKey,
  privateVapidKey
);
// Subscribe Route
app.post("/subscribeA", (req, res) => {
console.log(req.body);
  // Get pushSubscription object
  // console.log(req.body.dataSubscribe);
  const subscription = req.body.dataSubscribe;
  const dataNotif = req.body.dataNotif;
if(dataNotif == null){
console.log('kosong rek');
}else{
console.log(dataNotif);
}
// Send 201 - resource created
  res.status(201).json({});
  // Create payload
  const payload = JSON.stringify({ head: "yobro", content: "kontennnya bro"});
  // Pass object into sendNotification
  webpush
    .sendNotification(subscription, payload)
    .catch(err => console.error(err));
});
io.on('connection', function (socket) {
  socket.on('notifikasi', function (data) {
    io.sockets.emit('notifikasi', {
      isi_notif: data.isi_notif});
  });
});

请求载荷

{dataSubscribe: {,…}, dataNotif: {head: "@username", content: "yo"}}
dataNotif: {head: "@username", content: "yo"}
dataSubscribe: {,…}

因此,它正在正确发送数据,但是在 index.js 中,当我使用 console.log(req.body) 它时 return 空数组 {}.

在您的 fetch() 中使用 no-cors 意味着 content-type 只能是以下之一:"application/x-www-form-urlencoded""multipart/form-data""text/plain"(更多解释here)。因此,您的 "application/json" 不被允许,因此服务器无法正确 read/parse body.

只允许简单的 headers 与 no-cors 一起使用,您可以阅读有关 here.

的内容

您必须停止在抓取中使用 no-cors 才能使用 JSON 或更改内容以使用允许的 content-type 之一。


仅供参考,在这种情况下,注销传入请求的重要预期方面通常会有所帮助。在这种情况下,您可以记录 content-type 并查看您得到了什么。您还可以在 Chrome 调试器的网络选项卡中查看从浏览器发送的请求。两者都可能会向您展示与 content-type.

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