Polish samples

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/HelloWorldProperties.java

@@ -17,11 +17,9 @@
 package sample.metrics.redis;
 
 import org.springframework.boot.context.properties.ConfigurationProperties;
-import org.springframework.stereotype.Component;
 
-@Component
 @ConfigurationProperties(prefix = "service", ignoreUnknownFields = false)
-public class HelloWorldService {
+public class HelloWorldProperties {
 
 	private String name = "World";
 
@@ -33,8 +31,4 @@ public class HelloWorldService {
 		this.name = name;
 	}
 
-	public String getHelloMessage() {
-		return "Hello " + this.name;
-	}
-
 }

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/SampleController.java

@@ -31,14 +31,18 @@ import org.springframework.web.bind.annotation.ResponseBody;
 @Description("A controller for handling requests for hello messages")
 public class SampleController {
 
+	private final HelloWorldProperties helloWorldProperties;
+
 	@Autowired
-	private HelloWorldService helloWorldService;
+	public SampleController(HelloWorldProperties helloWorldProperties) {
+		this.helloWorldProperties = helloWorldProperties;
+	}
 
 	@GetMapping("/")
 	@ResponseBody
 	public Map<String, String> hello() {
-		return Collections.singletonMap("message",
-				this.helloWorldService.getHelloMessage());
+		return Collections.singletonMap("message", "Hello " +
+				this.helloWorldProperties.getName());
 	}
 
 	protected static class Message {

spring-boot-samples/spring-boot-sample-metrics-redis/src/main/java/sample/metrics/redis/SampleRedisExportApplication.java

@@ -24,11 +24,13 @@ import org.springframework.boot.actuate.metrics.export.MetricExportProperties;
 import org.springframework.boot.actuate.metrics.jmx.JmxMetricWriter;
 import org.springframework.boot.actuate.metrics.repository.redis.RedisMetricRepository;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
 import org.springframework.data.redis.connection.RedisConnectionFactory;
 import org.springframework.jmx.export.MBeanExporter;
 
 @SpringBootApplication
+@EnableConfigurationProperties(HelloWorldProperties.class)
 public class SampleRedisExportApplication {
 
 	@Autowired