先指定 dubbo 版本号，pom.xml

order/order-service-impl/pom.xml

@@ -42,9 +42,8 @@
         </dependency>
 
         <dependency>
-            <groupId>com.alibaba</groupId>
+            <groupId>org.apache.dubbo</groupId>
             <artifactId>dubbo</artifactId>
-            <scope>compile</scope>
         </dependency>
         <dependency>
             <groupId>com.google.guava</groupId>

order/pom.xml

@@ -17,5 +17,13 @@
         <module>order-service-impl</module>
     </modules>
 
-
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.apache.dubbo</groupId>
+                <artifactId>dubbo</artifactId>
+                <version>2.7.1</version>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
 </project>
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