Question

我有一个应用程序，它将侦听多个队列，这些队列在不同的vhost上声明。我使用SimpleRoutingConnectionFactory来存储connectionFactoryMap，我希望用@RabbitListener设置我的监听器。

根据Spring AMQP doc：

同样从1.4版开始，您可以配置路由连接 SimpleMessageListenerContainer中的工厂。在那种情况下，列表队列名称用作查找键。例如，如果您配置使用setQueueNames（＆＃34; foo，bar＆＃34;）的容器，查找键将是＆＃34; [富，巴]＆＃34; （没有空格）。

我使用了@RabbitListener(queues = "some-key")。不幸的是，春天抱怨＆＃34;查找键[null]＆＃34;。见下文。

18：52：44.528警告--- [cTaskExecutor-1] o.s.a.r.l.SimpleMessageListenerContainer：消费者引发异常，如果连接工厂支持，处理可以重新启动 java.lang.IllegalStateException：无法确定目标 ConnectionFactory for lookup key [null] at org.springframework.amqp.rabbit.connection.AbstractRoutingConnectionFactory.determineTargetConnectionFactory（AbstractRoutingConnectionFactory.java:119）在 org.springframework.amqp.rabbit.connection.AbstractRoutingConnectionFactory.createConnection（AbstractRoutingConnectionFactory.java:97）在 org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils $ 1.createConnection（ConnectionFactoryUtils.java:90）在 org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.doGetTransactionalResourceHolder（ConnectionFactoryUtils.java:140）在 org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.getTransactionalResourceHolder（ConnectionFactoryUtils.java:76）在 org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start（BlockingQueueConsumer.java:472）在 org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer $ AsyncMessageProcessingConsumer.run（SimpleMessageListenerContainer.java:1306）在java.lang.Thread.run（Thread.java:745）

我做错了什么吗？如果将queues属性用作查找键（用于连接工厂查找），我应该用什么来指定我想听哪个队列？
最终，我希望能够进行编程/动态侦听器设置。如果我使用＆＃34;程序化端点注册＆＃34;，我是否应该删除＃34;注释驱动的侦听器端点＆＃34;？我喜欢＆＃34;注释驱动的侦听器端点＆＃34;，因为侦听器可以有多个带有不同传入数据类型的消息句柄作为参数，这非常干净整洁。如果我使用Programmatic Endpoint Registration，我将不得不解析Message输入变量，并根据消息类型/内容调用我的特定自定义消息处理程序。

修改嗨加里，我稍微修改了你的代码＃2，以便它使用Jackson2JsonMessageConverter来序列化类对象（在RabbitTemplate bean中），并使用它将它们反序列化回对象（在inboundAdapter中）。我还删除了@RabbitListener，因为在我的情况下，所有的监听器都会在运行时添加。现在fooBean可以接收整数，字符串和TestData消息而没有任何问题！留下的唯一问题是该计划不断报告警告：

＆＃34; [erContainer＃0-1] o.s.a.r.l.SimpleMessageListenerContainer：消费者引发异常，如果连接工厂支持，处理可以重启

java.lang.IllegalStateException：无法为查找键[null]＆＃34;确定目标ConnectionFactory。有关完整的堆栈跟踪，请参阅底部。

我错过了什么吗？

@SpringBootApplication
public class App2 implements CommandLineRunner {

    public static void main(String[] args) {
        SpringApplication.run(App2.class, args);
    }

    @Autowired
    private IntegrationFlowContext flowContext;

    @Autowired
    private ConnectionFactory routingCf;

    @Autowired
    private RabbitTemplate template;

    @Override
    public void run(String... args) throws Exception {
        // dynamically add a listener for queue qux
        IntegrationFlow flow = IntegrationFlows.from(Amqp.inboundAdapter(this.routingCf, "qux").messageConverter(new Jackson2JsonMessageConverter()))
                .handle(fooBean())
                .get();
        this.flowContext.registration(flow).register();

        // now test it
        SimpleResourceHolder.bind(this.routingCf, "[qux]");
        this.template.convertAndSend("qux", 42);
        this.template.convertAndSend("qux", "fizbuz");
        this.template.convertAndSend("qux", new TestData(1, "test"));
        SimpleResourceHolder.unbind(this.routingCf);
    }

    @Bean
    RabbitTemplate rabbitTemplate() {
        RabbitTemplate template = new RabbitTemplate(routingCf);
        template.setMessageConverter(new Jackson2JsonMessageConverter());
        return template;
    }

    @Bean
    @Primary
    public ConnectionFactory routingCf() {
        SimpleRoutingConnectionFactory rcf = new SimpleRoutingConnectionFactory();
        Map<Object, ConnectionFactory> map = new HashMap<>();
        map.put("[foo,bar]", routedCf());
        map.put("[baz]", routedCf());
        map.put("[qux]", routedCf());
        rcf.setTargetConnectionFactories(map);
        return rcf;
    }

    @Bean
    public ConnectionFactory routedCf() {
        return new CachingConnectionFactory("127.0.0.1");
    }

    @Bean
    public Foo fooBean() {
        return new Foo();
    }

    public static class Foo {

        @ServiceActivator
        public void handleInteger(Integer in) {
            System.out.println("int: " + in);
        }

        @ServiceActivator
        public void handleString(String in) {
            System.out.println("str: " + in);
        }

        @ServiceActivator
        public void handleData(TestData data) {
            System.out.println("TestData: " + data);
        }
    }
}

完整堆栈跟踪：

2017-03-15 21:43:06.413  INFO 1003 --- [           main] hello.App2                               : Started App2 in 3.003 seconds (JVM running for 3.69)
2017-03-15 21:43:11.415  WARN 1003 --- [erContainer#0-1] o.s.a.r.l.SimpleMessageListenerContainer : Consumer raised exception, processing can restart if the connection factory supports it

java.lang.IllegalStateException: Cannot determine target ConnectionFactory for lookup key [null]
    at org.springframework.amqp.rabbit.connection.AbstractRoutingConnectionFactory.determineTargetConnectionFactory(AbstractRoutingConnectionFactory.java:119) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.AbstractRoutingConnectionFactory.createConnection(AbstractRoutingConnectionFactory.java:97) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.core.RabbitTemplate.doExecute(RabbitTemplate.java:1430) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:1411) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.core.RabbitTemplate.execute(RabbitTemplate.java:1387) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.core.RabbitAdmin.initialize(RabbitAdmin.java:500) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.core.RabbitAdmin$11.onCreate(RabbitAdmin.java:419) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.CompositeConnectionListener.onCreate(CompositeConnectionListener.java:33) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.CachingConnectionFactory.createConnection(CachingConnectionFactory.java:571) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils$1.createConnection(ConnectionFactoryUtils.java:90) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.doGetTransactionalResourceHolder(ConnectionFactoryUtils.java:140) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.connection.ConnectionFactoryUtils.getTransactionalResourceHolder(ConnectionFactoryUtils.java:76) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:505) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer$AsyncMessageProcessingConsumer.run(SimpleMessageListenerContainer.java:1382) ~[spring-rabbit-1.7.1.RELEASE.jar:na]
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_112]

Answer 1

请显示您的配置 - 它对我来说很好......

@SpringBootApplication
public class So42784471Application {

    public static void main(String[] args) {
        SpringApplication.run(So42784471Application.class, args);
    }

    @Bean
    @Primary
    public ConnectionFactory routing() {
        SimpleRoutingConnectionFactory rcf = new SimpleRoutingConnectionFactory();
        Map<Object, ConnectionFactory> map = new HashMap<>();
        map.put("[foo,bar]", routedCf());
        map.put("[baz]", routedCf());
        rcf.setTargetConnectionFactories(map);
        return rcf;
    }

    @Bean
    public ConnectionFactory routedCf() {
        return new CachingConnectionFactory("10.0.0.3");
    }

    @RabbitListener(queues = { "foo" , "bar" })
    public void foobar(String in) {
        System.out.println(in);
    }

    @RabbitListener(queues = "baz")
    public void bazzer(String in) {
        System.out.println(in);
    }

}

关于第二个问题，您可以手动构建端点，但它非常复杂。在Spring Integration @ServiceActivator中使用类似功能可能更容易。

我会尽快更新此答案。

修改

以下是使用Spring Integration技术在运行时动态添加多方法侦听器的更新...

@SpringBootApplication public class So42784471Application implements CommandLineRunner { public static void main(String[] args) { SpringApplication.run(So42784471Application.class, args); } @Autowired private IntegrationFlowContext flowContext; @Autowired private ConnectionFactory routingCf; @Autowired private RabbitTemplate template; @Override public void run(String... args) throws Exception { // dynamically add a listener for queue qux IntegrationFlow flow = IntegrationFlows.from(Amqp.inboundAdapter(this.routingCf, "qux")) .handle(fooBean()) .get(); this.flowContext.registration(flow).register(); // now test it SimpleResourceHolder.bind(this.routingCf, "[qux]"); this.template.convertAndSend("qux", 42); this.template.convertAndSend("qux", "fizbuz"); SimpleResourceHolder.unbind(this.routingCf); } @Bean @Primary public ConnectionFactory routingCf() { SimpleRoutingConnectionFactory rcf = new SimpleRoutingConnectionFactory(); Map<Object, ConnectionFactory> map = new HashMap<>(); map.put("[foo,bar]", routedCf()); map.put("[baz]", routedCf()); map.put("[qux]", routedCf()); rcf.setTargetConnectionFactories(map); return rcf; } @Bean public ConnectionFactory routedCf() { return new CachingConnectionFactory("10.0.0.3"); } @RabbitListener(queues = { "foo" , "bar" }) public void foobar(String in) { System.out.println(in); } @RabbitListener(queues = "baz") public void bazzer(String in) { System.out.println(in); } @Bean public Foo fooBean() { return new Foo(); } public static class Foo { @ServiceActivator public void handleInteger(Integer in) { System.out.println("int: " + in); } @ServiceActivator public void handleString(String in) { System.out.println("str: " + in); } } }

Spring Amqp：将SimpleRoutingConnectionFactory与@RabbitListener混合

1 个答案: