Question

在我的一个用例中，我想从Spring boot Rest API的应用程序资源属性中传递多个参数，并且应该由注册的ApplicationEventListener或Jersey的ApplicationEvent监听此参数。可以请一些身体建议我如何实现这一目标。以下是我的代码库

package com.learning;
import org.springframework.boot.context.ApplicationPidFileWriter;
import org.springframework.context.ConfigurableApplicationContext;
public class ABCApplication {

public static void main(String args[])
{
    ConfigurableApplicationContext context = 
    SpringApplication.run(ABCApplication.class, args);
    context.addApplicationListener(new ApplicationPidFileWriter());
    context.addApplicationListener(new TestingListener());
}
}

这是我的监听器，应触发该监听器并从Rest API接收这些参数。

  import org.glassfish.jersey.server.monitoring.ApplicationEvent;
  import org.glassfish.jersey.server.monitoring.ApplicationEventListener;

  public class TestingListener implements ApplicationEventListener {

  @Override
  public void onEvent(ApplicationEvent event) {

    if (event.getType() == 
   ApplicationEvent.Type.INITIALIZATION_APP_FINISHED) {
        final ResourceModel resourceModel = event.getResourceModel();
        final ResourceLogDetails logDetails = new 
       ResourceLogDetails();
        resourceModel.getResources().stream().forEach((resource) -> {    
       logDetails.addEndpointLogLines(getLinesFromResource(resource));
        });
        logDetails.log();
    }
}

附加我的资源

   @Api
   @Path("/resource")
   public static class MyResource {

    @GET
    @Path("/get/path")
    public String getMethod() {
        return "get";
    }

    @POST
    public void post(String entity) {
    }

}

所以我期望的输出是

  GET  resource/get/path
  POST resource

但这是我的业务逻辑，我想在这里获得更多的值，这些值应该来自应用程序资源属性文件。

Answer 1

好吧，因为对于我而言，尚不清楚您需要如何以及如何管理通风孔，我举一个标准的例子：

要在Spring Boot中发布事件，您可以创建一个管理发布的服务：

@Component
public class CustomSpringEventPublisherService {
    @Autowired
    private ApplicationEventPublisher applicationEventPublisher;

    public void publishCustomEvent(final String message) {
        System.out.println("Publishing custom event. ");
        CustomSpringEvent customSpringEvent = new CustomSpringEvent(this, message);
        applicationEventPublisher.publishEvent(customSpringEvent);
    }
}

CustomSpingEvent是一个POJO，其中包含您的有效负载和源：

public class CustomSpringEvent extends ApplicationEvent {
    private String message;

    public CustomSpringEvent(Object source, String message) {
        super(source);
        this.message = message;
    }
    public String getMessage() {
        return message;
    }
}

然后您可以像这样实现侦听器：

@Component
public class AnnotationDrivenContextStartedListener {

    @EventListener
    public void handleContextStart(CustomSpringEvent event) {
        System.out.println("A custom event and his payload ->"+event.getMessage());
    }
}

现在，就您而言，您可以实现所示的侦听器，并在控制器中放置发布者服务： @RestController @RequestMapping（“ /”）公共类YourController {

 private final CustomSpringEventPublisherService customSpringEventPublisherService;

public YourController(CustomSpringEventPublisherService customSpringEventPublisherService) {
    this.customSpringEventPublisherService = customSpringEventPublisherService;
}


@GetMapping(value = "/resource")
public ResponseEntity<PublicationDto> getResource() {
    // Create CustomSpringEvent
    CustomSpringEvent customSpringEvent = new CustomSpringEvent(...)

    this.customSpringEventPublisherService.publishCustomEvent(customSpringEvent);
}

}

这实际上是概念性工作，未经测试。

希望它可以帮助您了解其工作原理

将参数从REST API应用程序属性传递到已注册的ApplicationEventListener

1 个答案: