Application.java

package service;

import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.vaadin.spring.annotation.EnableVaadin;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.context.annotation.Bean;
import org.springframework.hateoas.hal.Jackson2HalModule;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@SpringBootApplication
@EnableFeignClients(basePackages = "service.clients")
@EnableWebMvc
@EnableAutoConfiguration
@EnableZuulProxy
@EnableVaadin
@Controller
public class Application extends SpringBootServletInitializer {

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

    @Bean
    public MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter() {
        MappingJackson2HttpMessageConverter jsonConverter = new MappingJackson2HttpMessageConverter();
        jsonConverter.setSupportedMediaTypes(MediaType.parseMediaTypes("application/hal+json"));
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        objectMapper.configure(DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY, true);
        objectMapper.registerModule(new Jackson2HalModule());
        jsonConverter.setObjectMapper(objectMapper);
        return jsonConverter;
    }

    @RequestMapping("/")
    public ResponseEntity home(HttpServletResponse response) throws IOException {
        response.sendRedirect("/movies");
        return new ResponseEntity(HttpStatus.PERMANENT_REDIRECT);
    }
}