修正 modbus 超时问题

ems-quartz/src/main/java/com/xzzn/quartz/config/ModbusExecutorConfig.java

@@ -0,0 +1,33 @@
+package com.xzzn.quartz.config;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+
+import javax.annotation.PreDestroy;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Modbus操作执行器配置
+ * 所有Modbus读写操作必须通过此单线程执行器串行执行，避免并发访问导致通讯故障
+ */
+@Configuration
+public class ModbusExecutorConfig {
+
+    private final ExecutorService modbusExecutor = Executors.newSingleThreadExecutor(r -> {
+        Thread t = new Thread(r, "modbus-io-thread");
+        t.setDaemon(false);
+        return t;
+    });
+
+    @Bean(name = "modbusExecutor")
+    public ExecutorService modbusExecutor() {
+        return modbusExecutor;
+    }
+
+    @PreDestroy
+    public void shutdown() {
+        modbusExecutor.shutdown();
+    }
+}