Disable devtools when running in a native image

See gh-32853

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/env/DevToolsPropertyDefaultsPostProcessor.java

@@ -30,6 +30,7 @@ import org.springframework.boot.devtools.logger.DevToolsLogFactory;
 import org.springframework.boot.devtools.restart.Restarter;
 import org.springframework.boot.devtools.system.DevToolsEnablementDeducer;
 import org.springframework.boot.env.EnvironmentPostProcessor;
+import org.springframework.core.NativeDetector;
 import org.springframework.core.Ordered;
 import org.springframework.core.annotation.Order;
 import org.springframework.core.env.ConfigurableEnvironment;
@@ -63,19 +64,12 @@ public class DevToolsPropertyDefaultsPostProcessor implements EnvironmentPostPro
 	private static final Map<String, Object> PROPERTIES;
 
 	static {
-		Properties properties = new Properties();
-		try (InputStream stream = DevToolsPropertyDefaultsPostProcessor.class
-				.getResourceAsStream("devtools-property-defaults.properties")) {
-			properties.load(stream);
+		if (NativeDetector.inNativeImage()) {
+			PROPERTIES = Collections.emptyMap();
 		}
-		catch (IOException ex) {
-			throw new RuntimeException("Failed to load devtools-property-defaults.properties", ex);
+		else {
+			PROPERTIES = loadDefaultProperties();
 		}
-		Map<String, Object> map = new HashMap<>();
-		for (String name : properties.stringPropertyNames()) {
-			map.put(name, properties.getProperty(name));
-		}
-		PROPERTIES = Collections.unmodifiableMap(map);
 	}
 
 	@Override
@@ -138,4 +132,24 @@ public class DevToolsPropertyDefaultsPostProcessor implements EnvironmentPostPro
 		}
 	}
 
+	private static Map<String, Object> loadDefaultProperties() {
+		Properties properties = new Properties();
+		try (InputStream stream = DevToolsPropertyDefaultsPostProcessor.class
+				.getResourceAsStream("devtools-property-defaults.properties")) {
+			if (stream == null) {
+				throw new RuntimeException(
+						"Failed to load devtools-property-defaults.properties because it doesn't exist");
+			}
+			properties.load(stream);
+		}
+		catch (IOException ex) {
+			throw new RuntimeException("Failed to load devtools-property-defaults.properties", ex);
+		}
+		Map<String, Object> map = new HashMap<>();
+		for (String name : properties.stringPropertyNames()) {
+			map.put(name, properties.getProperty(name));
+		}
+		return Collections.unmodifiableMap(map);
+	}
+
 }

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/system/DevToolsEnablementDeducer.java

@@ -21,6 +21,7 @@ import java.util.LinkedHashSet;
 import java.util.Set;
 
 import org.springframework.boot.SpringApplicationAotProcessor;
+import org.springframework.core.NativeDetector;
 
 /**
  * Utility to deduce if DevTools should be enabled in the current context.
@@ -47,11 +48,15 @@ public final class DevToolsEnablementDeducer {
 
 	/**
 	 * Checks if a specific {@link StackTraceElement} in the current thread's stacktrace
-	 * should cause devtools to be disabled.
+	 * should cause devtools to be disabled. Devtools will also be disabled if running in
+	 * a native image.
 	 * @param thread the current thread
 	 * @return {@code true} if devtools should be enabled
 	 */
 	public static boolean shouldEnable(Thread thread) {
+		if (NativeDetector.inNativeImage()) {
+			return false;
+		}
 		for (StackTraceElement element : thread.getStackTrace()) {
 			if (isSkippedStackElement(element)) {
 				return false;