Use ApplicationStartedEvent instead

See spring-projects/spring-framework#25074

src/main/java/com/izeye/throwaway/repository/DefaultTestRepository.java

@@ -1,15 +1,25 @@
 package com.izeye.throwaway.repository;
 
+import javax.annotation.PostConstruct;
+
 import org.springframework.stereotype.Repository;
 
+import lombok.extern.slf4j.Slf4j;
+
 /**
  * Default {@link TestRepository}.
  *
  * @author Johnny Lim
  */
 @Repository
+@Slf4j
 public class DefaultTestRepository implements TestRepository {
 
+	@PostConstruct
+	void initialize() {
+		log.info("@PostConstruct in DefaultTestRepository");
+	}
+
 	@Override
 	public String get(String id) {
 		throw new RuntimeException("Failed to get: " + id);

src/main/java/com/izeye/throwaway/service/DefaultTestService.java

@@ -1,21 +1,19 @@
 package com.izeye.throwaway.service;
 
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
 import javax.annotation.PostConstruct;
 
 import org.springframework.stereotype.Service;
 
 import com.izeye.throwaway.repository.TestRepository;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * Default {@link TestService}.
  *
  * @author Johnny Lim
  */
 @Service
+@Slf4j
 public class DefaultTestService implements TestService {
 
 	private final TestRepository testRepository;
@@ -31,21 +29,7 @@ public String get(String id) {
 
 	@PostConstruct
 	void warmUp() {
-		List<String> ids = Arrays.asList("test1", "test2");
-		List<Thread> threads = new ArrayList<>();
-		ids.forEach((id) -> {
-			Thread thread = new Thread(() -> this.testRepository.get(id));
-			threads.add(thread);
-			thread.start();
-		});
-		threads.forEach(thread -> {
-			try {
-				thread.join();
-			} catch (InterruptedException ex) {
-				Thread.currentThread().interrupt();
-				throw new RuntimeException(ex);
-			}
-		});
+		log.info("@PostConstruct in DefaultTestService");
 	}
 
 }

src/main/java/com/izeye/throwaway/service/WarmUpApplicationListener.java

@@ -0,0 +1,45 @@
+package com.izeye.throwaway.service;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.boot.context.event.ApplicationStartedEvent;
+import org.springframework.context.ApplicationListener;
+import org.springframework.stereotype.Component;
+
+import com.izeye.throwaway.repository.TestRepository;
+import lombok.extern.slf4j.Slf4j;
+
+@Component
+@Slf4j
+public class WarmUpApplicationListener implements ApplicationListener<ApplicationStartedEvent> {
+
+	private final TestRepository testRepository;
+
+	public WarmUpApplicationListener(TestRepository testRepository) {
+		this.testRepository = testRepository;
+	}
+
+	@Override
+	public void onApplicationEvent(ApplicationStartedEvent event) {
+		log.info("In onApplicationEvent(): {}", event);
+
+		List<String> ids = Arrays.asList("test1", "test2");
+		List<Thread> threads = new ArrayList<>();
+		ids.forEach((id) -> {
+			Thread thread = new Thread(() -> this.testRepository.get(id));
+			threads.add(thread);
+			thread.start();
+		});
+		threads.forEach(thread -> {
+			try {
+				thread.join();
+			} catch (InterruptedException ex) {
+				Thread.currentThread().interrupt();
+				throw new RuntimeException(ex);
+			}
+		});
+	}
+
+}