[英]Spring - Validate incoming message in RabbitMQ listener
I am using Spring Boot framework.我正在使用 Spring Boot 框架。 I want to send an object from a service to another service via RabbitMQ like this:我想通过 RabbitMQ 将一个对象从一个服务发送到另一个服务,如下所示:
Service A:服务一:
rabbitTemplate.convertAndSend("queue", createAccountRequestMessage);
Service B:服务乙:
@RabbitListener(queues = "queue")
public void onAccountRequested(@Valid CreateAccountRequestMessage createAccountRequestMessage, Channel channel, @Header(AmqpHeaders.DELIVERY_TAG, long tag) throws IOException
{
}
In CreateAccountRequestMessage
class I have defined some validation annotations like @NotEmpty
, @NotNull
and etc, but when I'm sending wrong message from service A to service B, @Valid
annotation doesn't work and CreateAccountRequestMessage
object is not validated before invoke onAccountRequested
method.在CreateAccountRequestMessage
类中,我定义了一些验证注释,如@NotEmpty
、 @NotNull
等,但是当我从服务 A 向服务 B 发送错误消息时,@ @Valid
注释不起作用并且CreateAccountRequestMessage
对象在调用onAccountRequested
方法之前未验证.
You need to set the validator in DefaultMessageHandlerMethodFactory
.您需要在DefaultMessageHandlerMethodFactory
设置验证器。
@Autowired
SmartValidator validator;
@Bean
public DefaultMessageHandlerMethodFactory messageHandlerMethodFactory() {
DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();
factory.setValidator(this.validator);
return factory;
}
Then you also need to specify the @Payload
annotation along with the @Valid
annotation.然后您还需要指定@Payload
注释和@Valid
注释。
@RabbitListener(queues = "queue")
public void onAccountRequested(@Valid @Payload CreateAccountRequestMessage
createAccountRequestMessage, Channel channel,
@Header(AmqpHeaders.DELIVERY_TAG, long tag) throws IOException
{
}
Now MethodArgumentNotValidException
will be thrown and the message will be discarded, or you can send the message to a dead letter exchange.现在将抛出MethodArgumentNotValidException
并丢弃消息,或者您可以将消息发送到死信交换。
I had the same problem.我有同样的问题。 The answer of @Praveer works well except SmartValidator.除了 SmartValidator,@Praveer 的答案效果很好。 I post here my solution, which is inspired by this article https://blog.trifork.com/2016/02/29/spring-amqp-payload-validation/我在这里发布了我的解决方案,它的灵感来自这篇文章https://blog.trifork.com/2016/02/29/spring-amqp-payload-validation/
@Configuration
@EnableRabbit
@Slf4j
public class CmsMQConfig implements RabbitListenerConfigurer {
@Value("${dw.rabbitmq.hosts}")
private String hosts;
@Value("${dw.rabbitmq.username}")
private String username;
@Value("${dw.rabbitmq.password}")
private String password;
@Value("${dw.rabbitmq.virtual-host}")
private String virtualHost;
public SimpleRabbitListenerContainerFactory rabbitListenerContainerFactory() {
SimpleRabbitListenerContainerFactory factory = new SimpleRabbitListenerContainerFactory();
factory.setConnectionFactory(connectionFactory());
factory.setMessageConverter(messageConverter());
return factory;
}
@Bean
public ConnectionFactory connectionFactory() {
CachingConnectionFactory connectionFactory = new CachingConnectionFactory();
connectionFactory.setAddresses(hosts);
connectionFactory.setUsername(username);
connectionFactory.setPassword(password);
connectionFactory.setVirtualHost(virtualHost);
return connectionFactory;
}
@Bean
public Jackson2JsonMessageConverter messageConverter() {
ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JodaModule());
mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
return new Jackson2JsonMessageConverter(mapper);
}
@Bean
public DefaultMessageHandlerMethodFactory defaultHandlerMethodFactory() {
DefaultMessageHandlerMethodFactory factory = new DefaultMessageHandlerMethodFactory();
factory.setValidator(amqpValidator());
return factory;
}
@Bean
public Validator amqpValidator() {
return new OptionalValidatorFactoryBean();
}
@Override
public void configureRabbitListeners(RabbitListenerEndpointRegistrar registrar) {
registrar.setContainerFactory(rabbitListenerContainerFactory());
registrar.setMessageHandlerMethodFactory(defaultHandlerMethodFactory());
}
}
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