boditech-a8000-be/src/main/java/com/dreamworks/boditech/service/WebsocketServerService.java

package com.dreamworks.boditech.service;
import com.dreamworks.boditech.utils.MyWsServerConnection;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.annotation.PostConstruct;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
@Service
public class WebsocketServerService {
    // connections
    private List<MyWsServerConnection> connections;

    @PostConstruct
    public void init() {
        this.connections = new ArrayList<>();
    }

    public void appendConnection(MyWsServerConnection connection) {
        this.connections.add(connection);
    }

    // send message to client
    public void send(String message) {
        for (MyWsServerConnection connection : this.connections) {
            connection.send(message);
        }
    }

    // send object to client
    public void send( Object object ) {
        ObjectMapper mapper = new ObjectMapper();
        String json = null;
        try {
            json = mapper.writeValueAsString(object);
        } catch (JsonProcessingException e) {
            throw new RuntimeException(e);
        }
        this.send(json);
    }
}