injection point example (#1850)

spring-all/src/main/java/org/baeldung/spring43/composedmapping/AppointmentsController.java

@@ -6,12 +6,16 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
+import org.apache.logging.log4j.Logger;
 
 @Controller
 @RequestMapping("/appointments")
 public class AppointmentsController {
 
-    private final AppointmentService appointmentService;
+    private AppointmentService appointmentService;
+
+    @Autowired
+    private Logger logger;
 
     @Autowired
     public AppointmentsController(AppointmentService appointmentService) {
@@ -20,6 +24,7 @@ public class AppointmentsController {
 
     @GetMapping
     public Map<String, Appointment> get() {
+        logger.info("Getting appointments...");
         return appointmentService.getAppointmentsForToday();
     }
 

spring-all/src/main/resources/log4j2.properties

@@ -0,0 +1,11 @@
+rootLogger.level=info
+rootLogger.appenderRefs = stdout
+rootLogger.appenderRef.stdout.ref = STDOUT
+
+appenders=console
+
+appender.console.type = Console
+appender.console.name = STDOUT
+appender.console.layout.type = PatternLayout
+appender.console.layout.pattern = %p %d{yyyy-MM-dd} [%t] %c{1} - %msg%n
+