在Linux中，如何使jar文件成为守护进程，以及如何添加websocket

[Unit]
Description=My App
After=network.target

[Service]
ExecStart=/usr/bin/java -jar /path/to/your/app.jar
WorkingDirectory=/path/to/your/app
User=your_username
Type=simple
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

sudo systemctl enable myapp
sudo systemctl start myapp

<dependency>
    <groupId>org.java-websocket</groupId>
    <artifactId>Java-WebSocket</artifactId>
    <version>1.5.1</version>
</dependency>

import org.java_websocket.WebSocket;
import org.java_websocket.handshake.ClientHandshake;
import org.java_websocket.server.WebSocketServer;

import java.net.InetSocketAddress;

public class MyWebSocketServer extends WebSocketServer {

    public MyWebSocketServer(int port) {
        super(new InetSocketAddress(port));
    }

    @Override
    public void onOpen(WebSocket conn, ClientHandshake handshake) {
        System.out.println("New connection opened");
    }

    @Override
    public void onClose(WebSocket conn, int code, String reason, boolean remote) {
        System.out.println("Connection closed");
    }

    @Override
    public void onMessage(WebSocket conn, String message) {
        System.out.println("Received message: " + message);
    }

    @Override
    public void onError(WebSocket conn, Exception ex) {
        System.out.println("Error occurred: " + ex.getMessage());
    }

    public static void main(String[] args) {
        int port = 8080; // 替换为您希望使用的实际端口
        MyWebSocketServer server = new MyWebSocketServer(port);
        server.start();
        System.out.println("WebSocket server started on port " + port);
    }
}