Update JacksonConfig.java

mall-portal/src/main/java/com/macro/mall/portal/config/JacksonConfig.java

@@ -11,7 +11,7 @@ import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
 
 /**
  * Jackson相关配置类
- * json不返回null的字段
+ * 配置json不返回null的字段
  * Created by macro on 2018/8/2.
  */
 @Configuration