[英]How to run multiline commands in NodeJS with child_process.exec
[英]How to run commands using child process using nodejs?
我已經使用 socket.io 在客戶端和服務器之間創建了通信,現在我使用 WebSockets 從客戶端向服務器發送命令,我想在服務器上從客戶端運行這些接收到的命令
這是我的解決方案
HTML(客戶端)
<html>
<body>
I am client
</body>
<script>
const ws = new WebSocket('ws://localhost:9898/');
ws.onopen = function() {
console.log('WebSocket Client Connected');
ws.send('npm run build');
};
ws.onmessage = function(e) {
console.log("Received: '" + e.data + "'");
};
</script>
</html>
這是 server.js
const http = require('http');
const WebSocketServer = require('websocket').server;
const server = http.createServer();
server.listen(9898);
const wsServer = new WebSocketServer({
httpServer: server
});
wsServer.on('request', function(request) {
const connection = request.accept(null, request.origin);
connection.on('message', function(message) {
console.log(message.utf8Data);
connection.sendUTF('Hi this is WebSocket server!');
});
connection.on('close', function(reasonCode, description) {
console.log('Client has disconnected.');
});
});
現在,當我們運行服務器並打開 index.html 時,服務器會收到以下消息
`npm run build`
現在如何使用子進程在服務器上運行此命令?
您可以使用child_process為您的 server.js 生成一個新進程,如下所示
const http = require('http');
const WebSocketServer = require('websocket').server;
const util = require('util');
const exec = util.promisify(require('child_process').exec);
const server = http.createServer();
server.listen(9898);
const wsServer = new WebSocketServer({
httpServer: server
});
wsServer.on('request', function(request) {
const connection = request.accept(null, request.origin);
connection.on('message', function(message) {
console.log(message.utf8Data);
const { stdout, stderr } = await exec(message.utf8Data);
console.log('stdout:', stdout);
console.log('stderr:', stderr);
connection.sendUTF('Hi this is WebSocket server!');
});
connection.on('close', function(reasonCode, description) {
console.log('Client has disconnected.');
});
});
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