@Value("${app.rest.employee.count-on-page}") /* работает только на не статическом поле*/
public int countOnPage;

        <!-- for path requests via resttemplate -->
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.4.1</version>
        </dependency>

HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        RestTemplate restTemplate = new RestTemplate(requestFactory);

@Component
private class Starter implements CommandLineRunner {
   @Override
   public void run(String... args) {
      //todo
   }
}

	@Bean
	public MessageSource messageSource() {
		ReloadableResourceBundleMessageSource messageSource = new ReloadableResourceBundleMessageSource();
		messageSource.setCacheSeconds(3600); //refresh cache once per hour
		messageSource.setDefaultEncoding("UTF-8");
		messageSource.setFallbackToSystemLocale(false);
		messageSource.setBasenames("classpath:locale/messages/app");
		return messageSource;
	}

@Bean
	public LocaleResolver localeResolver() {
		SessionLocaleResolver slr = new SessionLocaleResolver();
		slr.setDefaultLocale(Locale.forLanguageTag("ru"));
		return slr;
	}

import javax.validation.Constraint;
import javax.validation.Payload;
import javax.validation.constraints.Pattern;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.ElementType.TYPE_USE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;


@Pattern(regexp = "^\\+[0-9]{11,16}$", message = "{constraints.phoneIncorrectFormat}")
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER, TYPE_USE })
@Retention(RUNTIME)
@Documented
@Constraint(validatedBy = { })
public @interface PhonePattern {

    /**
     * @return the error message template
     */
    String message() default "{constraints.phoneIncorrectFormat}";

    /**
     * @return the groups the constraint belongs to
     */
    Class<?>[] groups() default { };

    /**
     * @return the payload associated to the constraint
     */
    Class<? extends Payload>[] payload() default { };
}

@Controller
//@PreAuthorize("hasAnyRole(T(ru.knastnt.prj.web.admin.MenuEditorController).ALLOWED_ROLES)")
@PreAuthorize("hasAnyRole(@menuEditorController.ALLOWED_ROLES)")
public class MenuEditorController {
    public static final String[] ALLOWED_ROLES = {Role.ADMIN.toString(), Role.EDITOR.toString()};
    ...
}

<ul th:fragment = "nav-default">
    <li sec:authorize="hasAnyRole(@menuEditorController.ALLOWED_ROLES)"><a th:href="@{${@menuEditorController.MENU_EDITOR_URL}}">menu editor</a></li>
</ul>

@SpringBootTest
@ContextConfiguration(classes = {SmsDeliveryServiceImplTestConfig.class})
class SmsDeliveryServiceTest {

    @Autowired
    @Qualifier("SmsDeliveryServiceForTesting")
    SmsDeliveryService smsDeliveryService;

    @Test
    void testmethod() {
    .........

@TestConfiguration
class SmsDeliveryServiceImplTestConfig {
    @Bean(name = "SmsDeliveryServiceForTesting")
    public SmsDeliveryService smsDeliveryService(SmsSender smsSender) {
        Duration[] smsPauseTime = new Duration[]{
                Duration.ofMillis(200),
                Duration.ofMillis(600),
                Duration.ofMillis(1400)
        };
        Duration timeForResetPauseTime = Duration.ofMillis(2500);
        TemporalUnit temporalUnit = ChronoUnit.MILLIS;
        return new SmsDeliveryService(smsSender, smsPauseTime, timeForResetPauseTime, temporalUnit);
    }
}

@Test
    void allMenusAuthorizePermissions() throws Exception {

        for (User user : ALL_ROLES_USERS) {
            log.debug("User role: " + user.getAuthorities());

            if (user == ADMIN || user == EDITOR) {
//              perform(get(MenuEditorController.MENU_EDITOR_URL).with(SecurityMockMvcRequestPostProcessors.user(user.getUsername()).authorities(user.getAuthorities())))
                perform(get(MenuEditorController.MENU_EDITOR_URL).with(SecurityMockMvcRequestPostProcessors.user(user)))
                        .andExpect(status().isOk());
            }else{
                perform(get(MenuEditorController.MENU_EDITOR_URL).with(SecurityMockMvcRequestPostProcessors.user(user)))
                        .andExpect(status().isForbidden());
            }

        }
    }

<ul th:fragment = "nav-default">
    ...
    <li sec:authorize="hasAnyRole(@menuEditorController.ALLOWED_ROLES)">
        <a th:href="@{${@menuEditorController.MENU_EDITOR_URL}}">Редактор меню</a>
    </li>
    ...
</ul>

@Controller
@RequestMapping(MENU_EDITOR_URL)
@PreAuthorize("hasAnyRole(@menuEditorController.ALLOWED_ROLES)")
public class MenuEditorController {
    public static final String MENU_EDITOR_URL = ADMIN_URL + "/menu";
    public static final String[] ALLOWED_ROLES = {Role.ADMIN.toString(), Role.EDITOR.toString()};
    ...
}

"execution(* ru.knastnt.myapp.*.*(..))" - любое возвращаемое значение, любой класс непосредственно в указанном пакете, любой метод класса, любые аргументы метода
"execution(* ru.knastnt...*.*(..))" - любое возвращаемое значение, любой класс в указанном пакете и всех дочерних, любой метод класса, любые аргументы метода
"execution(* ru.knastnt.repo.ClientDao.*GroupIn(..))" - любое возвращаемое значение, указанный класс в указанном пакете, любой метод класса заканчивающийся на GroupIn, любые аргументы метода
"@annotation(AspectAnnotation)" - любой метод помеченный аннотацией

@Aspect
@Component
public class MyAspect {
    @Before("execution(* ru.knastnt.prj..*.*(..))")
    public void beforeMethodInvocation(JoinPoint jp){
        System.out.println("Вызов метода с сигнатурой: " + jp.getSignature());
    }
}

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JavaTimeModule());

@Data
public class MyDTO {
    @JsonSetter(nulls = Nulls.AS_EMPTY)
    private List<InnerDTO> innerDtos;
}

    <properties>
        <swagger.version>2.9.2</swagger.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${swagger.version}</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${swagger.version}</version>
        </dependency>
    </dependencies>

@Configuration
@EnableSwagger2
@PropertySource("classpath:configuration.properties")
public class SwaggerConfiguration {

    @Bean
    public Docket configureDocs(@Value("${projectVersion}") String version) {
        return new Docket(DocumentationType.SWAGGER_2)
                .apiInfo(apiInfo(version))
                .useDefaultResponseMessages(false)
                .select()
                .paths(Predicates.not(PathSelectors.regex("/actuator/*")))
                .paths(Predicates.not(PathSelectors.regex("/error")))
                .apis(RequestHandlerSelectors.basePackage("ru.knastnt.myproject"))
                .build()
                .tags(new Tag("MainController", "Мой тестовый проект"));
    }

    private ApiInfo apiInfo(String version) {
        return new ApiInfoBuilder()
                .title("Мой проект")
                .description("REST API к моему проекту")
                .termsOfServiceUrl("")
                .version(version)
                .build();
    }
}

@Api("Главный контроллер")
@RestController
@RequestMapping("/api")
public class MainController {

    @ApiOperation("Поиск объекта по идентификатору")
    @GetMapping("/{objectId}")
    public ObjectDto getObjectById(@ApiParam(value = "Идентификатор объекта", example = "1") @PathVariable Long objectId) {
        return ...;
    }
}

@ApiModel("Параметры запроса объекта")
public class ObjectDto {
    @ApiModelProperty("Номер объекта")
    private String objNum;
}

<dependency>
	<groupId>com.squareup.okhttp3</groupId>
	<artifactId>mockwebserver</artifactId>
	<scope>test</scope>
</dependency>

MockWebServer mockWebServer = new okhttp3.mockwebserver.MockWebServer();
mockWebServer.start(64970);
mockWebServer.enqueue(
    new MockResponse()
        .setResponseCode(200)
        .setBody(diasoftResponse)
        .addHeader("Content-Type", "application/json")
);