diff --git a/example/mica-mqtt-example/src/main/java/net/dreamlu/iot/mqtt/client/MqttClientConnTest.java b/example/mica-mqtt-example/src/main/java/net/dreamlu/iot/mqtt/client/MqttClientConnTest.java
index 0a3cf99a..681b0055 100644
--- a/example/mica-mqtt-example/src/main/java/net/dreamlu/iot/mqtt/client/MqttClientConnTest.java
+++ b/example/mica-mqtt-example/src/main/java/net/dreamlu/iot/mqtt/client/MqttClientConnTest.java
@@ -26,7 +26,7 @@
  */
 public class MqttClientConnTest {
 
-	public static void main(String[] args) throws Exception {
+	public static void main(String[] args) {
 		// 初始化 mqtt 客户端
 		MqttConnectReasonCode reasonCode = MqttClient.create()
 //			.ip("127.0.0.1")