我已经用node.js构建了一个Web应用程序，以便通过POST请求从SNS主题接收消息并将它们记录到控制台，然后将它们显示在网页上，如果我将消息发布到主题中，则该消息会打印在控制台中，但是什么也没有我的网页上有更新吗？
这是我的代码 app.js
const express = require("express");
const request = require('request')
const bodyParser = require('body-parser')
const app = express();
app.use(express.static('public'));
app.set("view engine", "ejs")
app.get('/', function (req, res) {
let subject = "Your Subject Will Appear Here";
let message = "Your Message Will Appear Here";
res.render("index", {subject:subject, message:message});
})
app.use(bodyParser.urlencoded({ extended: false }))
app.use(bodyParser.json())
app.post('/', (req, res) => {
let body = ''
req.on('data', (chunk) => {
body += chunk.toString()
})
req.on('end', () => {
let payload = JSON.parse(body)
if (payload.Type === 'Notification') {
console.log(payload.Message);
let subject = payload.Subject;
let message = payload.Message;
res.render("index", {subject:subject, message:message});
}
});
});
app.listen(80, process.env.IP, function(request, response){
console.log("## SERVER STARTED ##");
});
这是我的代码 index.js
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>title</title>
<link rel="stylesheet" type="text/css" href="/css/style.css">
<link href='https://fonts.googleapis.com/css?family=Open+Sans:300' rel='stylesheet' type='text/css'>
</head>
<body>
<div class="container">
<fieldset>
<% if(subject !== null){ %>
<p>SNS Subject: <%= subject %></p>
<% } %>
<% if(message !== null){ %>
<p>SNS Message: <%= message %></p>
<% } %>
</fieldset>
</div>
</body>
</html>
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