Solution :
If you want to use Spring Boot, your main app should be like below code snippet
package aa.bb.cc;
@SpringBootApplication
@ComponentScan({ "aa.bb.cc.*" })
public class springApplication {
.....
Please make sure that you have @Repository and @Service appropriately annotated.
Also make sure all your packages should be under - aa.bb.cc.*
In your case this setup will resolve your issues.