Polish

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/batch/JobLauncherCommandLineRunner.java

@@ -51,6 +51,7 @@ import org.springframework.boot.CommandLineRunner;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.ApplicationEventPublisherAware;
 import org.springframework.core.Ordered;
+import org.springframework.core.log.LogMessage;
 import org.springframework.util.Assert;
 import org.springframework.util.PatternMatchUtils;
 import org.springframework.util.StringUtils;
@@ -158,9 +159,7 @@ public class JobLauncherCommandLineRunner implements CommandLineRunner, Ordered,
 			if (StringUtils.hasText(this.jobNames)) {
 				String[] jobsToRun = this.jobNames.split(",");
 				if (!PatternMatchUtils.simpleMatch(jobsToRun, job.getName())) {
-					if (logger.isDebugEnabled()) {
-						logger.debug("Skipped job: " + job.getName());
-					}
+					logger.debug(LogMessage.format("Skipped job: %s", job.getName()));
 					continue;
 				}
 			}
@@ -180,9 +179,7 @@ public class JobLauncherCommandLineRunner implements CommandLineRunner, Ordered,
 					execute(job, jobParameters);
 				}
 				catch (NoSuchJobException ex) {
-					if (logger.isDebugEnabled()) {
-						logger.debug("No job found in registry for job name: " + jobName);
-					}
+					logger.debug(LogMessage.format("No job found in registry for job name: %s", jobName));
 				}
 			}
 		}

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/Connection.java

@@ -29,6 +29,7 @@ import java.util.regex.Pattern;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import org.springframework.core.log.LogMessage;
 import org.springframework.util.Base64Utils;
 
 /**
@@ -68,9 +69,7 @@ class Connection {
 		this.inputStream = new ConnectionInputStream(inputStream);
 		this.outputStream = new ConnectionOutputStream(outputStream);
 		this.header = this.inputStream.readHeader();
-		if (logger.isDebugEnabled()) {
-			logger.debug("Established livereload connection [" + this.header + "]");
-		}
+		logger.debug(LogMessage.format("Established livereload connection [%s]", this.header));
 	}
 
 	/**
@@ -109,9 +108,7 @@ class Connection {
 				throw new ConnectionClosedException();
 			}
 			else if (frame.getType() == Frame.Type.TEXT) {
-				if (logger.isDebugEnabled()) {
-					logger.debug("Received LiveReload text frame " + frame);
-				}
+				logger.debug(LogMessage.format("Received LiveReload text frame %s", frame));
 			}
 			else {
 				throw new IOException("Unexpected Frame Type " + frame.getType());

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/LiveReloadServer.java

@@ -33,6 +33,7 @@ import java.util.concurrent.atomic.AtomicInteger;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import org.springframework.core.log.LogMessage;
 import org.springframework.util.Assert;
 
 /**
@@ -109,9 +110,7 @@ public class LiveReloadServer {
 	public int start() throws IOException {
 		synchronized (this.monitor) {
 			Assert.state(!isStarted(), "Server already started");
-			if (logger.isDebugEnabled()) {
-				logger.debug("Starting live reload server on port " + this.port);
-			}
+			logger.debug(LogMessage.format("Starting live reload server on port %s", this.port));
 			this.serverSocket = new ServerSocket(this.port);
 			int localPort = this.serverSocket.getLocalPort();
 			this.listenThread = this.threadFactory.newThread(this::acceptConnections);

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/diagnostics/FailureAnalyzers.java

@@ -30,6 +30,7 @@ import org.springframework.context.ConfigurableApplicationContext;
 import org.springframework.context.EnvironmentAware;
 import org.springframework.core.annotation.AnnotationAwareOrderComparator;
 import org.springframework.core.io.support.SpringFactoriesLoader;
+import org.springframework.core.log.LogMessage;
 import org.springframework.util.Assert;
 import org.springframework.util.ClassUtils;
 import org.springframework.util.ReflectionUtils;
@@ -113,9 +114,7 @@ final class FailureAnalyzers implements SpringBootExceptionReporter {
 				}
 			}
 			catch (Throwable ex) {
-				if (logger.isDebugEnabled()) {
-					logger.debug("FailureAnalyzer " + analyzer + " failed", ex);
-				}
+				logger.debug(LogMessage.format("FailureAnalyzer %s failed", analyzer), ex);
 			}
 		}
 		return null;