Simple example for using custom mime-types with fixed request mappings in Spring REST MVC

App.java

package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
public class App {

	public static void main(String[] args) {
		SpringApplication.run(App.class, args);
	}

}

/**
 * <pre>
 * curl -v -H "accept: application/vnd.acme.resource.overview-v1+json" http://localhost:8080/res
 * curl -v -H "accept: application/vnd.acme.resource.detail-v1+json" http://localhost:8080/res
 * 
 * curl -v -H "accept: application/vnd.acme.resource.overview-v2+json" http://localhost:8080/res
 * curl -v -H "accept: application/vnd.acme.resource.detail-v2+json" http://localhost:8080/res
 * 
 * curl -v -H "Accept: application/json" http://localhost:8080/res
 * </pre>
 *
 */
@RestController
@RequestMapping("/res")
class ResourceControllerV1 {
	
	@GetMapping(produces = {"application/vnd.acme.resource.overview-v1+json"})
	Object getOverview() {
		return "Resource V1 Overview";
	}
	
	@GetMapping(produces = {"application/vnd.acme.resource.detail-v1+json"})
	Object getDetail() {
		return "Resource V1 Detail";
	}
}

@RestController
@RequestMapping("/res")
class ResourceControllerV2 {
	
	@GetMapping(produces = {"application/vnd.acme.resource.overview-v2+json"})
	Object getOverview() {
		return "Resource V2 Overview";
	}
	
	@GetMapping(produces = {"application/vnd.acme.resource.detail-v2+json", "application/json"})
	Object getDetail() {
		return "Resource V2 Detail";
	}
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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 http://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>2.1.6.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.github.thomasdarimont.training</groupId>
	<artifactId>spring-boot-multi-contenttype-mvc-demo</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>