changed file path. Thanks to @cmourouvin for letting me know.

src/main/resources/spring/data-access.properties

@@ -30,8 +30,8 @@ jpa.showSql=true
 #jdbc.password=
 
 # Properties that control the population of schema and data for a new data source
-#jdbc.initLocation=classpath:db/mysql/initDB.txt
-#jdbc.dataLocation=classpath:db/mysql/populateDB.txt
+#jdbc.initLocation=classpath:db/mysql/initDB.sql
+#jdbc.dataLocation=classpath:db/mysql/populateDB.sql
 
 # Property that determines which Hibernate dialect to use
 # (only applied with "applicationContext-hibernate.xml")