我们正在尝试为Spring中的rest api创建一个Custom Annotation。我是创建自定义注释的新手,我已经在下面给出了代码片段
Spring Boot App -
@SpringBootApplication
@ComponentScan(basePackageClasses = {ServiceController.class, CustomAnnotatorProcessor.class})
public class ServiceApp {
public static void main(String[] args) {
SpringApplication.run(ServiceApp.class, args);
}
}
RestController -
@RestController
public class ServiceController {
@RequestMapping(method = RequestMethod.GET, value="/service/v1/version")
@ApiResponses(value = {
@ApiResponse(code = 200, message = "Success", response = String.class),
@ApiResponse(code = 401, message = "Unauthorized"),
@ApiResponse(code = 403, message = "Forbidden"),
@ApiResponse(code = 404, message = "Not Found"),
@ApiResponse(code = 500, message = "Failure")})
@CustomAnnotation()
public String getVersion() {
return "success";
}
}
自定义注释 -
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.METHOD})
@Documented
public @interface CustomAnnotation {
}
注释处理器 -
@Component
public class CustomAnnotatorProcessor implements BeanPostProcessor {
private ConfigurableListableBeanFactory configurableBeanFactory;
@Autowired
public CustomAnnotatorProcessor(ConfigurableListableBeanFactory beanFactory) {
this.configurableBeanFactory = beanFactory;
}
@Override
public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
return bean;
}
@Override
public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
MethodCallback methodCallback = new CustomAnnotationMethodCallback(configurableBeanFactory, bean);
ReflectionUtils.doWithMethods(bean.getClass(), methodCallback);
return bean;
}
方法回调 -
public class CustomAnnotationMethodCallback implements MethodCallback{
@Override
public void doWith(Method method) throws IllegalArgumentException, IllegalAccessException {
if (method.isAnnotationPresent(CustomAnnotation.class)) {
System.out.println("doWith is getting called for CustomAnnotationMethodCallback");
ReflectionUtils.makeAccessible(method);
//DO VALIDATION WHETHER A SPECIFIC HEADER IS PRESENT IN THE GIVEN REQUEST
return;
}
}
}
我正在尝试在实现BeanPostProcessor的类中处理自定义注释,但是我有一个问题
Issue_1 :回调被调用一次,但我无法对来自/ service / v1 / version API的每个请求应用验证。我需要对每个请求进行验证,如果是这样,我们的设计/方法是否正确如何解决这个问题,如果不是,请提出不同的方法
Issue_2 :如果我需要将完整的请求对象(单独使用标题)传递给我的@customAnnotation,我应该怎么做?
如果您需要更多详细信息,请与我们联系
由于
答案 0 :(得分:0)
为了处理自定义注释@validateAuthentication,我们创建了扩展 HandlerInterceptorAdapter 的Intercepter类。
我们在 preHandle(HttpServletRequest请求,HttpServletResponse响应,对象处理程序)方法中实现了对请求标头的验证。
答案 1 :(得分:0)
Issue_1 :回调被调用一次,但我无法对来自/service/v1/version
API的每个请求应用验证。我需要对每个请求进行验证,如果是这样,我们的设计/方法是否正确如何解决这个问题,如果不是,请提出不同的方法
Issue_2 :如果我需要将完整的请求对象(单独使用标题)传递给我的@customAnnotation
,我应该怎么做?
我认为你应该使用除注释之外的spring AOP或Interceptor。