invalid arg ‘x-message-ttl‘ for queue ‘xxx‘ in vhost ‘/‘: {unacceptable_type,longstr}_invalid arg 'x-message-ttl' for queue

问题

具体报错内容如下：

2022-11-08 14:49:15,170 29895 [AMQP Connection xxx:5672] ERROR org.springframework.amqp.rabbit.connection.CachingConnectionFactory - Channel shutdown: channel error; protocol method: #method<channel.close>(reply-code=406, 
reply-text=PRECONDITION_FAILED - invalid arg 'x-message-ttl' for queue 'xxx' in vhost '/': {unacceptable_type,longstr}, class-id=50, method-id=10)
2022-11-08 14:49:15,172 29897 [main] INFO  org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer - Broker not available; cannot force queue declarations during start: java.io.IOException
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使用bean方式创建延迟队列queue

    @Bean
    public Queue messageTtlQueue() {
        return QueueBuilder.durable(ctDataTtl.getQueue())
            // 配置到期后转发的交换
            .withArgument("x-dead-letter-exchange", dataConsume.getExchange())
            // 配置到期后转发的路由键
            .withArgument("x-dead-letter-routing-key", dataConsume.getRoutingKey())
            // 延迟30分钟
            .withArgument("x-message-ttl", dataTtl.getTtl()).build();
    }
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其中dataTtl是配置类，配置ttl值

@Data
@Configuration
@ConfigurationProperties(prefix = "custom.rabbitmq.data-ttl")
public class DataTtl {
    private String exchange;
    private String queue;
    private String routingKey;
    private String ttl;
}

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原因

问题就在配置类DataTtl 中， 其中ttl数据类型不能使用String类型，改为Long之后即可解决问题

解决

dataTtl配置类修改如下：

@Data
@Configuration
@ConfigurationProperties(prefix = "custom.rabbitmq.data-ttl")
public class DataTtl {
    private String exchange;
    private String queue;
    private String routingKey;
    private Long ttl;
}

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重启jar包即可创建延迟队列。