--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/pom.xml	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,70 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.1.13.RELEASE</version>
+		<relativePath/>
+	</parent>
+	<groupId>de.comline</groupId>
+	<artifactId>spring-boot-playground</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+	<name>Spring boot playground</name>
+
+	<properties>
+		<jdk.version.source>1.8</jdk.version.source>
+		<jdk.version.target>1.8</jdk.version.target>
+		<java.version>${jdk.version.source}</java.version>
+	</properties>
+
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<configuration>
+					<verbose>true</verbose>
+					<source>${jdk.version.source}</source>
+					<target>${jdk.version.target}</target>
+				</configuration>
+			</plugin>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+			</plugin>
+		</plugins>
+	</build>
+
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>org.junit.vintage</groupId>
+					<artifactId>junit-vintage-engine</artifactId>
+				</exclusion>
+			</exclusions>
+		</dependency>
+<!-- 		<dependency> -->
+<!-- 			<groupId>org.junit.jupiter</groupId> -->
+<!-- 			<artifactId>junit-jupiter</artifactId> -->
+<!-- 			<version>5.6.2</version> -->
+<!-- 			<scope>test</scope> -->
+<!-- 		</dependency> -->
+		<dependency>
+			<groupId>org.hamcrest</groupId>
+			<artifactId>hamcrest</artifactId>
+			<version>2.2</version>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+</project>
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/application/Application.java	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,68 @@
+package de.comline.spring.application;
+
+import java.util.Arrays;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.ServletWebServerFactoryAutoConfiguration;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import de.comline.spring.application.Application.CustomConfig;
+import de.comline.spring.controller.CustomLogicController;
+import de.comline.spring.controller.HelloController;
+import de.comline.spring.service.CustomLogicService;
+
+//@SpringBootApplication
+
+//@ComponentScan(basePackages = "de.comline.spring.controller,de.comline.spring.service")
+//@EnableAutoConfiguration
+
+@Import(CustomConfig.class)
+public class Application {
+	public static void main(String[] args) {
+		SpringApplication.run(Application.class, args);
+	}
+
+	@Bean
+	public CommandLineRunner commandLineRunner(ApplicationContext ctx) {
+		return args -> {
+			System.out.println("Let's inspect the beans provided by Spring Boot:");
+
+			String[] beanNames = ctx.getBeanDefinitionNames();
+			Arrays.sort(beanNames);
+			for (String beanName : beanNames) {
+				System.out.println(beanName);
+			}
+		};
+	}
+
+	@Configuration
+	// scheint hier nicht zu funktionieren:
+	// @ComponentScan(basePackages = "de.comline.spring.controller,de.comline.spring.service")
+
+	// ServletWebServerFactoryAutoConfiguration for bringing up the embedded tomcat
+	// DispatcherServletAutoConfiguration for detecting the REST controllers
+	// @formatter:off
+	@Import({
+			ServletWebServerFactoryAutoConfiguration.class,
+			DispatcherServletAutoConfiguration.class,
+			JacksonAutoConfiguration.class,
+			HttpMessageConvertersAutoConfiguration.class,
+//			HttpEncodingAutoConfiguration.class,
+//			CodecsAutoConfiguration.class,
+			
+			HelloController.class,
+			CustomLogicController.class,
+			CustomLogicService.class
+	})
+	// @formatter:on
+	static class CustomConfig {
+		// no custom methods
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/controller/CustomLogicController.java	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,18 @@
+package de.comline.spring.controller;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.comline.spring.service.CustomLogicService;
+
+@RestController
+public class CustomLogicController {
+	@Autowired
+	private CustomLogicService service;
+	
+	@RequestMapping("/svc")
+	public String getCustomLogic() {
+		return service.doit();
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/controller/HelloController.java	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,19 @@
+package de.comline.spring.controller;
+
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import de.comline.spring.model.json.Greeting;
+
+@RestController
+public class HelloController {
+	@RequestMapping("/")
+	public String index() {
+		return "Greetings from Spring Boot!\n";
+	}
+	
+	@RequestMapping(path = "/", consumes = "application/json", produces = "application/json")
+	public Greeting sayHello() {
+		return new Greeting(index());
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/model/json/Greeting.java	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,16 @@
+package de.comline.spring.model.json;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+public class Greeting {
+	@JsonProperty("msg")
+	private String message;
+	
+	public Greeting(String message) {
+		this.message = message;
+	}
+	
+	public String getMessage() {
+		return message;
+	}
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/spring-boot-playground/src/main/java/de/comline/spring/service/CustomLogicService.java	Tue Aug 11 16:08:16 2020 +0200
@@ -0,0 +1,10 @@
+package de.comline.spring.service;
+
+import org.springframework.stereotype.Service;
+
+@Service
+public class CustomLogicService {
+	public String doit() {
+		return "this is the custom logic";
+	}
+}