- 后端：引入 druid spring boot

- 后端：解决多数据源的循环依赖问题

promotion/promotion-service-impl/pom.xml

@@ -41,6 +41,10 @@
             <groupId>mysql</groupId>
             <artifactId>mysql-connector-java</artifactId>
         </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>druid-spring-boot-starter</artifactId>
+        </dependency>
 <!--        <dependency>-->
 <!--            <groupId>org.springframework.boot</groupId>-->
 <!--            <artifactId>spring-boot-starter-jdbc</artifactId>-->
@@ -109,12 +113,10 @@
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-tx</artifactId>
-            <version>5.1.3.RELEASE</version>
         </dependency>
         <dependency>
             <groupId>org.springframework</groupId>
             <artifactId>spring-jdbc</artifactId>
-            <version>5.1.3.RELEASE</version>
         </dependency>
         <!--        <dependency>-->
 <!--            <groupId>org.springframework</groupId>-->