设置数据库连接字符集为utf-8

src/main/resources/dev/jdbc.properties

@@ -1,6 +1,6 @@
 jdbc.driverClassName=com.mysql.jdbc.Driver
 #jdbc.url=jdbc:oracle:thin:@192.168.253.6:1521:orcl
-jdbc.url=jdbc:mysql://192.168.253.12:3306/mall_test_dev
+jdbc.url=jdbc:mysql://192.168.253.12:3306/mall_test_dev?characterEncoding=UTF-8
 jdbc.username=root
 jdbc.password=select111***
 jdbc.initialSize=1