后端：增加 MyBatis JSONTypeHandler

后端：增加指定商品的促销价格计算
前端：商品详情页，增加促销价格计算

common/common-framework/pom.xml

@@ -64,8 +64,25 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.mybatis</groupId>
+            <artifactId>mybatis</artifactId>
+            <version>3.5.0</version>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>2.9.8</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-annotations</artifactId>
+            <version>2.9.7</version>
+            <scope>compile</scope>
+        </dependency>
 
     </dependencies>
 
 
-</project>
+</project>