CODEWITHSUNDEEP
eventsasynchronousspring-boot
Fabio
Fabio

Reputation: 225

Events in Spring Boot

Is it possible to use events in Spring Boot? I need to execute one method but without waiting for return. I'm trying to use this:

public class GerarSeloEvent extends ApplicationEvent {

    private TbPedido pedido;
    private Integer cdCartorio;

    public GerarSeloEvent(Object source, TbPedido pedido, Integer cdCartorio) {
        super(source);
        this.pedido = pedido;
        this.cdCartorio = cdCartorio;
    }

    public TbPedido getPedido() {
        return pedido;
    }

    public Integer getCdCartorio() {
        return cdCartorio;
    }
}

@Component
public class GerarSeloListener implements ApplicationListener<GerarSeloEvent> {
    @Autowired
    SeloService seloService;
    @Override
    public void onApplicationEvent(GerarSeloEvent event) {
        seloService.gerarSelos(event.getPedido(), event.getCdCartorio());
    }
}

and my call

GerarSeloEvent gerarSelos = new GerarSeloEvent(this, pedido, cdCartorio);
EnviarEmailPedidoEvent enviarEmail = new EnviarEmailPedidoEvent(this, pedido);
publisher.publishEvent(gerarSelos);

But my code waits to return anything to my front-end. I need one async event.

Upvotes: 1

Views: 4591

Answers (1)

Stephane Nicoll
Stephane Nicoll

Reputation: 33091

This should work:

@Component
public class GerarSeloListener {

    private final SeloService seloService;

    @Autowired
    public GerarSeloListener(SeloService seloService) { ... }

    @EventListener
    @Async
    public void handleGerarSeloEvent(GerarSeloEvent event event) {
        ....
    }

You need to add @EnableAsync on one of your configuration (the best place is your @SpringBootApplication annotated class). But as Martin already said you don't need event if you want to process a method asynchronously: only add @Async and invoke it the usual way.

You may want to read the documentation

Upvotes: 4

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