add logback

build.gradle

@@ -33,6 +33,9 @@ dependencies {
 
   implementation "io.vertx:vertx-core:$vertxVersion"
 
+  compile group: 'ch.qos.logback', name: 'logback-classic', version: '1.2.3'
+  compile group: 'org.slf4j', name: 'jul-to-slf4j', version: '1.7.25'
+
   testImplementation "io.vertx:vertx-junit5:$vertxVersion"
   testRuntime("org.junit.jupiter:junit-jupiter-engine:$junitJupiterEngineVersion")
 }

src/main/java/com/aruistar/vertxstarter/MainVerticle.java

@@ -2,11 +2,16 @@
 
 import io.vertx.core.AbstractVerticle;
 import io.vertx.core.Future;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 public class MainVerticle extends AbstractVerticle {
 
+  private static Logger logger = LoggerFactory.getLogger(MainVerticle.class);
+
   @Override
   public void start(Future<Void> startFuture) throws Exception {
+    logger.info("verticle start");
     vertx.createHttpServer().requestHandler(req -> {
       req.response()
         .putHeader("content-type", "text/plain")

src/main/resources/logback.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+
+  <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
+      <Pattern>%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n</Pattern>
+    </encoder>
+  </appender>
+
+  <logger name="com.aruistar" level="info"/>
+
+  <root level="info">
+    <appender-ref ref="STDOUT" />
+  </root>
+
+</configuration>