添加简单的超时清理，防止config线程过多，卡死emq(未测试)

src/main/java/com/example/tdl/mqtt/MqttListener.java

@@ -50,7 +50,7 @@ public class MqttListener implements MqttCallback {
     @Autowired
     private ConfigService configService;
 
-    Map<String,Future<String>> futureMap = new HashMap<String,Future<String>>();
+    Map<String,Future<String>> futureMap = new HashMap<String, Future<String>>();
 
     private ScheduledExecutorService mReconnectScheduler;
     private long mInitDelay = INIT_DELAY_DEFAULT;
@@ -121,6 +121,23 @@ public class MqttListener implements MqttCallback {
      //   clientReconnect();
     }
 
+    private void clearOvertimeConfig(Long ts){
+        try {
+            for(String key : futureMap.keySet()){
+                String[] tmparray = key.split("_");
+                Long tskey = Long.valueOf(tmparray[2]);
+                if(ts - tskey > 60*1000){
+                    Future<String> result = futureMap.get(key);
+                    result.cancel(true);
+                    if(result.isCancelled())
+                        futureMap.remove(key);
+                }
+            }
+        }catch (Exception e){
+            System.out.println(e.getMessage());
+        }
+    }
+
     @Override
     public void messageArrived(String topic, MqttMessage mqttMessage) throws Exception {
         String Message = mqttMessage.toString();
@@ -128,6 +145,7 @@ public class MqttListener implements MqttCallback {
         String[] tmparray = topic.split("/");
         String Type = tmparray[1];
         String SN = tmparray[2];
+        clearOvertimeConfig(timestamp);
         if(SN.matches("^[0-9]*$")){
             try {
                 Integer flag = parseData(Message,SN,Type);
@@ -155,11 +173,13 @@ public class MqttListener implements MqttCallback {
                         mqttconfig.getUsername(), mqttconfig.getPassword(),mqttconfig.getQos(),
                         mqttconfig.getCacrt(),mqttconfig.getClientkey(), mqttconfig.getClientcrt(),mqttconfig.getClientpwd());
                 result = configthreadPool.submit(gcconfig);
+
+                futureMap.put(Type+"_"+SN+"_"+timestamp,result);
 //            while (result.isDone())
 //            {
 //                String respcmd = result.get();
 //            }
-//            futureMap.put(timestamp.toString(),result);
+//
             } catch (JsonSyntaxException e) {
                 e.printStackTrace();
                 System.out.println("mqttAsyncClient: message " + Message + " received syntax error.");