Little fix for listener

Author: Aleksandar Osenov

devicehive-auth/src/main/java/com/devicehive/application/AppContextEventListener.java

@@ -20,23 +20,19 @@
  * #L%
  */
 
-import org.springframework.context.event.ContextRefreshedEvent;
-import org.springframework.context.event.EventListener;
+import org.springframework.boot.context.event.ApplicationPreparedEvent;
+import org.springframework.boot.context.event.SpringApplicationEvent;
+import org.springframework.context.ApplicationEvent;
+import org.springframework.context.ApplicationListener;
+import org.springframework.context.event.ApplicationContextEvent;
 import org.springframework.core.env.ConfigurableEnvironment;
 import org.springframework.core.env.MapPropertySource;
-import org.springframework.stereotype.Component;
 
 import java.util.ArrayList;
-import java.util.List;
 import java.util.Collection;
+import java.util.List;
 
-@Component
-public class AppContextEventListener {
-
-    @EventListener
-    public void handleContextRefreshed(ContextRefreshedEvent event) {
-        printActiveProperties((ConfigurableEnvironment) event.getApplicationContext().getEnvironment());
-    }
+public class AppContextEventListener implements ApplicationListener<ApplicationEvent> {
 
     private void printActiveProperties(ConfigurableEnvironment env) {
 
@@ -64,4 +60,11 @@ private void printActiveProperties(ConfigurableEnvironment env) {
                 });
         System.out.println("******************************************************************************");
     }
+
+    @Override
+    public void onApplicationEvent(ApplicationEvent event) {
+        if(event instanceof ApplicationPreparedEvent) {
+            printActiveProperties((ConfigurableEnvironment)  ((ApplicationPreparedEvent) event).getApplicationContext().getEnvironment());
+        }
+    }
 }

devicehive-auth/src/main/java/com/devicehive/application/DeviceHiveAuthApplication.java

@@ -57,6 +57,7 @@ public class DeviceHiveAuthApplication extends SpringBootServletInitializer {
 
     public static void main(String... args) {
         ConfigurableApplicationContext context = new SpringApplicationBuilder()
+                .listeners(new AppContextEventListener())
                 .sources(DeviceHiveAuthApplication.class)
                 .web(WebApplicationType.SERVLET)
                 .run(args);