package com.example.springboot.component; import cn.hutool.json.JSONObject; import java.util.ArrayList; import java.util.List; public class Plcstate extends Thread { @Override public void run() { while (this != null) { try { Thread.sleep(10000); } catch (InterruptedException e) { e.printStackTrace(); } List plclist = S7control.getinstance().ReadWord("DB103.DBW0", 10); JSONObject jsonObject = new JSONObject(); // jsonObject.append("sta", // new short[] { 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, }); jsonObject.append("sta", plclist); WebSocketServer sendwServer = WebSocketServer.sessionMap.get("State"); if (sendwServer != null) { sendwServer.sendMessage(jsonObject.toString()); } } } }