upgrade spring-boot project, extract auto-config, remove security

spring-boot/src/main/java/com/baeldung/toggle/FeaturesAspect.java

@@ -1,6 +1,7 @@
 package com.baeldung.toggle;
 
-import org.apache.log4j.Logger;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.aspectj.lang.ProceedingJoinPoint;
 import org.aspectj.lang.annotation.Around;
 import org.aspectj.lang.annotation.Aspect;
@@ -10,7 +11,7 @@ import org.springframework.stereotype.Component;
 @Component
 public class FeaturesAspect {
 
-    private static final Logger LOG = Logger.getLogger(FeaturesAspect.class);
+    private static final Logger LOG = LogManager.getLogger(FeaturesAspect.class);
 
     @Around(value = "@within(featureAssociation) || @annotation(featureAssociation)")
     public Object checkAspect(ProceedingJoinPoint joinPoint, FeatureAssociation featureAssociation) throws Throwable {

spring-boot/src/main/java/com/baeldung/toggle/SalaryService.java

@@ -11,7 +11,7 @@ public class SalaryService {
 
     @FeatureAssociation(value = MyFeatures.EMPLOYEE_MANAGEMENT_FEATURE)
     public void increaseSalary(long id) {
-        Employee employee = employeeRepository.findOne(id);
+        Employee employee = employeeRepository.findById(id).orElse(null);
         employee.setSalary(employee.getSalary() + employee.getSalary() * 0.1);
         employeeRepository.save(employee);
     }

spring-boot/src/main/java/com/baeldung/toggle/ToggleApplication.java

@@ -5,9 +5,7 @@ import javax.annotation.security.RolesAllowed;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-import com.baeldung.autoconfiguration.MySQLAutoconfiguration;
-
-@SpringBootApplication(exclude = MySQLAutoconfiguration.class)
+@SpringBootApplication
 public class ToggleApplication {
     @RolesAllowed("*")
     public static void main(String[] args) {