sample AppConfig

AppConfig.java

@Configuration
@ComponentScan(basePackageClasses = Application.class)
public class AppConfig
{
    @Bean
    public RestTemplate restTemplate() {
        RestTemplate restTemplate = new RestTemplate(httpRequestFactory());
        List<HttpMessageConverter<?>> converters = restTemplate.getMessageConverters();
        for (HttpMessageConverter<?> converter : converters) {
            if (converter instanceof MappingJackson2HttpMessageConverter) {
                MappingJackson2HttpMessageConverter jsonConverter = (MappingJackson2HttpMessageConverter) converter;
                jsonConverter.setObjectMapper(new ObjectMapper());
                jsonConverter.setSupportedMediaTypes(Arrays.asList(new MediaType("application", "json", MappingJackson2HttpMessageConverter.DEFAULT_CHARSET), new MediaType("text", "javascript", MappingJackson2HttpMessageConverter.DEFAULT_CHARSET)));
            }
        }
        return restTemplate;
    }
    @Bean
    public ClientHttpRequestFactory httpRequestFactory() {
        return new HttpComponentsClientHttpRequestFactory(httpClient());
    }

    @Bean
    public HttpClient httpClient() {
        PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
        CloseableHttpClient closeableHttpClient = HttpClientBuilder.create().setConnectionManager(connectionManager).build();
        connectionManager.setMaxTotal(5);
        connectionManager.setDefaultMaxPerRoute(5);
        return closeableHttpClient;
    }
}