this is tutorial example for angular 4 and spring boot
Part 1 - http://mydevgeek.com/angular-4-crud-application-with-spring-boot-rest-service-part-1/
Part 2 - http://mydevgeek.com/angular-4-crud-application-with-spring-boot-rest-service-part-2/
Part 3 - http://mydevgeek.com/angular-4-crud-application-with-spring-boot-rest-service-part-3/