如何使用Spring Boot配置嵌入式ActiveMQ Broker URL

Question

我跟隨了一個簡單的示例，該示例使用Spring Boot（版本1.4.X）設置和運行嵌入式ActiveMQ。 這是指向示例https://spring.io/guides/gs/messaging-jms/的鏈接

我的課程結構如下：

@SpringBootApplication
@EnableJms
public class Application {

@Autowired
ConfigurableApplicationContext context;

@Bean
JmsListenerContainerFactory<?> myJmsContainerFactory(ConnectionFactory connectionFactory) {
    SimpleJmsListenerContainerFactory factory = new SimpleJmsListenerContainerFactory();
    factory.setConnectionFactory(connectionFactory);

    return factory;
}

@JmsListener(destination = "mailbox-destination", containerFactory = "myJmsContainerFactory")
public void receiveMessage(String message) {
    System.out.println("Message received: " + message);
    context.close();
}

public static void main(String[] args) throws Exception {
    FileSystemUtils.deleteRecursively(new File("active-data"));
    ConfigurableApplicationContext context = SpringApplication.run(Application.class, args);

    JmsTemplate template = context.getBean(JmsTemplate.class);
    MessageCreator messageCreator = new MessageCreator() {
        public Message createMessage(Session session) throws JMSException {
            return session.createTextMessage("Test");
        }
    };
    template.send("mailbox-destination", messageCreator);
}
}

並如下所示構建：

apply plugin: 'java'
apply plugin: 'maven'

group = 'jms.activemq'
version = '0.0.1-SNAPSHOT'

description = """jms.activemq"""

sourceCompatibility = 1.5
targetCompatibility = 1.5

repositories {
     maven { url "http://repo.maven.apache.org/maven2" }
}
dependencies {
    compile group: 'org.springframework.boot', name: 'spring-boot-starter-activemq', version:'1.4.0.RELEASE'
    testCompile(group: 'org.springframework.boot', name: 'spring-boot-starter-test', version:'1.4.0.RELEASE') {
exclude(module: 'commons-logging')
}
}

到目前為止一切正常（只要我將application.properties保留為空），但是如果我嘗試通過將以下內容添加到application.properties文件來配置代理url（以便遠程客戶端可以連接）：

spring.activemq.broker-url=tcp://localhost:61616
spring.activemq.user=admin
spring.activemq.password=admin

我有一個例外：

2016-08-03 12:46:00.938  WARN 88180 --- [           main] s.c.a.AnnotationConfigApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.jms.config.internalJmsListenerEndpointRegistry'; nested exception is org.springframework.jms.UncategorizedJmsException: Uncategorized exception occurred during JMS processing; nested exception is javax.jms.JMSException: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused: connect
2016-08-03 12:46:00.939  INFO 88180 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Unregistering JMX-exposed beans on shutdown
2016-08-03 12:46:00.945  INFO 88180 --- [           main] utoConfigurationReportLoggingInitializer :
org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.jms.config.internalJmsListenerEndpointRegistry'; nested exception is org.springframework.jms.UncategorizedJmsException: Uncategorized exception occurred during JMS processing; nested exception is javax.jms.JMSException: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused: connect
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:176) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:51) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:346) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:149) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:112) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:874) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:544) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:313) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174) [spring-boot-1.4.0.RELEASE.jar:1.4.0.RELEASE]
at jms.activemq.Application.main(Application.java:37) [main/:na]
Caused by: org.springframework.jms.UncategorizedJmsException: Uncategorized exception occurred during JMS processing; nested exception is javax.jms.JMSException: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused: connect
at org.springframework.jms.support.JmsUtils.convertJmsAccessException(JmsUtils.java:316) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.support.JmsAccessor.convertJmsAccessException(JmsAccessor.java:169) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.AbstractJmsListeningContainer.start(AbstractJmsListeningContainer.java:273) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.config.JmsListenerEndpointRegistry.startIfNecessary(JmsListenerEndpointRegistry.java:243) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.config.JmsListenerEndpointRegistry.start(JmsListenerEndpointRegistry.java:206) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173) ~[spring-context-4.3.2.RELEASE.jar:4.3.2.RELEASE]
... 12 common frames omitted
Caused by: javax.jms.JMSException: Could not connect to broker URL: tcp://localhost:61616. Reason: java.net.ConnectException: Connection refused: connect
at org.apache.activemq.util.JMSExceptionSupport.create(JMSExceptionSupport.java:36) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.ActiveMQConnectionFactory.createActiveMQConnection(ActiveMQConnectionFactory.java:373) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.ActiveMQConnectionFactory.createActiveMQConnection(ActiveMQConnectionFactory.java:303) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.ActiveMQConnectionFactory.createConnection(ActiveMQConnectionFactory.java:243) ~[activemq-client-5.13.4.jar:5.13.4]
at org.springframework.jms.support.JmsAccessor.createConnection(JmsAccessor.java:180) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.AbstractJmsListeningContainer.createSharedConnection(AbstractJmsListeningContainer.java:413) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.AbstractJmsListeningContainer.establishSharedConnection(AbstractJmsListeningContainer.java:381) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.AbstractJmsListeningContainer.doStart(AbstractJmsListeningContainer.java:285) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.SimpleMessageListenerContainer.doStart(SimpleMessageListenerContainer.java:210) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
at org.springframework.jms.listener.AbstractJmsListeningContainer.start(AbstractJmsListeningContainer.java:270) ~[spring-jms-4.3.2.RELEASE.jar:4.3.2.RELEASE]
... 15 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_92]
at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85) ~[na:1.8.0_92]
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350) ~[na:1.8.0_92]
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206) ~[na:1.8.0_92]
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188) ~[na:1.8.0_92]
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172) ~[na:1.8.0_92]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392) ~[na:1.8.0_92]
at java.net.Socket.connect(Socket.java:589) ~[na:1.8.0_92]
at org.apache.activemq.transport.tcp.TcpTransport.connect(TcpTransport.java:525) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.tcp.TcpTransport.doStart(TcpTransport.java:488) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.util.ServiceSupport.start(ServiceSupport.java:55) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.AbstractInactivityMonitor.start(AbstractInactivityMonitor.java:168) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.InactivityMonitor.start(InactivityMonitor.java:52) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:58) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.WireFormatNegotiator.start(WireFormatNegotiator.java:72) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:58) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.transport.TransportFilter.start(TransportFilter.java:58) ~[activemq-client-5.13.4.jar:5.13.4]
at org.apache.activemq.ActiveMQConnectionFactory.createActiveMQConnection(ActiveMQConnectionFactory.java:353) ~[activemq-client-5.13.4.jar:5.13.4]
... 23 common frames omitted 

我查看了一些鏈接，但仍然無法確定導致問題的原因。 真的希望您能提供一些見識或有用的材料。

我最初的想法是Spring Boot將讀取這些值並使用它們來配置ActiveMQ代理，但是看起來它使用這些值來連接到代理（已為代理配置了不同的設置）。 如何更改代理配置，以便外部客戶端（不與代理使用相同的JVM運行）可以使用tcp：// localhost：61616訪問代理

更新：

我遵循了一種嵌入此處列出的代理並能夠嵌入具有所需URL並能夠連接到它的代理的方法。 但是，似乎我最終擁有兩個代理，因為似乎Spring Boot仍然可以像以前一樣創建一個代理。

基本上，只是在調用SpringApplication.run（Application.class，args）;之前在主方法的開頭添加這段代碼。

BrokerService broker = new BrokerService();
broker.addConnector("tcp://localhost:61617");
broker.setPersistent(false);
broker.start();

我正在運行兩個代理實例，感覺一點都不對。

1）這是嵌入經紀人的正確方法

2）如果是這樣，如何停止Spring Boot從另一個啟動？ （無需刪除spring-boot-starter-activemq依賴性）。

提前致謝。

Answer 1

我相信我在玩了一段時間后才明白這一點。 我以為有兩個實例正在運行，因為我試圖創建與DEFAULT嵌入式代理的連接（試圖確定它是否已創建/存在），如下所示：

ActiveMQConnectionFactory connectionFactory = new ActiveMQConnectionFactory("vm://localhost?broker.persistent=false");

但是顯然Spring Boot認為當時不存在並創建它。

因此，為了只運行我創建的實例，我要做的就是提供一個在application.properties文件中創建實例時添加到連接器的URL（在本例中為tcp://localhost:61616 ），如下所示

spring.activemq.broker-url=tcp://localhost:61616

然后Spring Boot將連接到該實例，而不創建另一個實例。 在屬性文件中缺少上述條目的情況下（或者，如果您像我上面那樣嘗試使用vm：// localhost？...連接到嵌入式實例），Spring Boot將繼續為您實例化一個實例。

我也確實在文檔中閱讀了此內容 ：

當Spring Boot檢測到ActiveMQ在類路徑上可用時，它也可以配置ConnectionFactory。 如果存在代理，則將自動啟動並配置嵌入式代理（只要未通過配置指定代理URL）。

但是在我看來，它並沒有很好地闡明（但是確實讓我思考了正確的方向）。

請告訴我們您是否有不同的發現或我的結論是否正確。 謝謝！！！