[BAEL-15958] - Upgraded spring-security-core to Boot 2

spring-security-core/src/main/java/org/baeldung/app/App.java

@@ -5,7 +5,7 @@ import javax.servlet.Filter;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.boot.autoconfigure.domain.EntityScan;
-import org.springframework.boot.web.support.SpringBootServletInitializer;
+import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
 import org.springframework.context.annotation.ComponentScan;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.web.filter.DelegatingFilterProxy;

spring-security-core/src/main/java/org/baeldung/service/TaskService.java

@@ -20,7 +20,7 @@ public class TaskService {
 
     @PreFilter("hasRole('MANAGER') or filterObject.assignee == authentication.name")
     public Iterable<Task> save(Iterable<Task> entities) {
-        return taskRepository.save(entities);
+        return taskRepository.saveAll(entities);
     }
 
 }

spring-security-core/src/main/resources/application.properties

@@ -0,0 +1 @@
+spring.main.allow-bean-definition-overriding=true