Adding a Custom HandlerMethodArgumentResolver to @RabbitListener

从版本 2.3.7 开始，你可以添加自己的 HandlerMethodArgumentResolver 并解析自定义方法参数。你所需要做的就是实施 RabbitListenerConfigurer 并使用 RabbitListenerEndpointRegistrar 类中的 setCustomMethodArgumentResolvers() 方法。

Starting with version 2.3.7 you are able to add your own HandlerMethodArgumentResolver and resolve custom method parameters. All you need is to implement RabbitListenerConfigurer and use method setCustomMethodArgumentResolvers() from class RabbitListenerEndpointRegistrar.

@Configuration
class CustomRabbitConfig implements RabbitListenerConfigurer {

    @Override
    public void configureRabbitListeners(RabbitListenerEndpointRegistrar registrar) {
        registrar.setCustomMethodArgumentResolvers(
				new HandlerMethodArgumentResolver() {

					@Override
					public boolean supportsParameter(MethodParameter parameter) {
						return CustomMethodArgument.class.isAssignableFrom(parameter.getParameterType());
					}

					@Override
					public Object resolveArgument(MethodParameter parameter, org.springframework.messaging.Message<?> message) {
						return new CustomMethodArgument(
								(String) message.getPayload(),
								message.getHeaders().get("customHeader", String.class)
						);
					}

				}
			);
    }

}