Node.js 流媒体网络摄像头不';使用opencvjs、socketio的快速生成器时不工作
我的网络摄像头工作正常,所以当我没有使用express generator应用程序时,我可以看到自己的脸。然而,在我安装了express generator并编写了相同的代码之后,我看不到自己的脸。我认为脚本在'index.ejs'中不起作用 1。bin/www 附加 2。app.js 附加 3。index.js 附加 4。index.ejs 附加Node.js 流媒体网络摄像头不';使用opencvjs、socketio的快速生成器时不工作,node.js,sockets,express-generator,Node.js,Sockets,Express Generator,我的网络摄像头工作正常,所以当我没有使用express generator应用程序时,我可以看到自己的脸。然而,在我安装了express generator并编写了相同的代码之后,我看不到自己的脸。我认为脚本在'index.ejs'中不起作用 1。bin/www 附加 2。app.js 附加 3。index.js 附加 4。index.ejs 附加 <!DOCTYPE html> <html lang="en"> <he
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
hello somin
<img id="image" style="width: 300; height: 300" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js">.
</script>
<script>
const socket = io.connection("/");
socket.on("image", (image) => {
const imageElm = document.getElementById("image");
imageElm.src = `data:image/jpeg;base64,${image}`;
});
</script>
</body>
</html>
文件
你好,索明
.
常量套接字=io.connection(“/”);
socket.on(“图像”,(图像)=>{
const imageElm=document.getElementById(“图像”);
imageElm.src=`data:image/jpeg;base64,${image}`;
});
我可以在app.js socket.io连接中看到console.log消息,但我认为index.ejs io.connection()不起作用。我无法理解代码与我没有使用express generator时的代码相同
app.io = require("socket.io")();
app.io.on("connection", function (socket) {
console.log("a user connected");
socket.broadcast.emit("hi");
socket.on("disconnect", function () {
console.log("user disconnected");
});
});
const cv = require("opencv4nodejs");
var express = require("express");
const server = require("http").Server(app);
const io = require("socket.io")(server);
const FPS = 30;
const wCap = new cv.VideoCapture(0);
wCap.set(cv.CAP_PROP_FRAME_WIDTH, 300);
wCap.set(cv.CAP_PROP_FRAME_HEIGHT, 300);
setInterval(() => {
const frame = wCap.read();
const image = cv.imencode(".jpg", frame).toString("base64");
io.emit("image", image);
}, 1000 / FPS);
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
</head>
<body>
hello somin
<img id="image" style="width: 300; height: 300" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.0.1/socket.io.js">.
</script>
<script>
const socket = io.connection("/");
socket.on("image", (image) => {
const imageElm = document.getElementById("image");
imageElm.src = `data:image/jpeg;base64,${image}`;
});
</script>
</body>
</html>