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小编典典

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

spring-boot

我跟随了一个简单的示例，该示例使用Spring
Boot（版本1.4.X）设置和运行嵌入式ActiveMQ。这是指向示例https://spring.io/guides/gs/messaging-
jms/的链接

我的课程结构如下：

@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);
}
}

并如下所示构建：

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')
}
}

到目前为止一切正常（只要我将application.properties保留为空），但是如果我尝试通过将以下内容添加到application.properties文件来配置代理URL（以便远程客户端可以连接）：

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

我有一个例外：

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

我查看了一些链接，但仍然无法确定导致问题的原因。真的希望您能提供一些见识或有用的材料。

我最初的想法是Spring
Boot将读取这些值并使用它们来配置ActiveMQ代理，但是看起来它使用这些值来连接到代理（已为代理配置了不同的设置）。如何更改代理配置，以便外部客户端（不与代理使用相同的JVM运行）可以使用tcp：//
localhost：61616访问代理

更新：

我遵循了一种嵌入此处列出的代理并能够嵌入具有所需URL并能够连接到它的代理的方法。但是，似乎我最终拥有两个代理，因为似乎Spring
Boot仍然可以像以前一样创建一个代理。

基本上，只是在调用SpringApplication.run（Application.class，args）;之前在主方法的开头添加这段代码。

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

我正在运行两个代理实例，感觉一点都不对。

1）这是嵌入经纪人的正确方法

2）如果是这样，如何停止Spring Boot从另一个启动？（无需删除spring-boot-starter-activemq依赖性）。

提前致谢。


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2020-05-30

共1个答案

小编典典

我相信我在玩了一段时间后才明白这一点。我以为有两个实例正在运行，因为我试图创建与DEFAULT嵌入式代理的连接（试图确定它是否已创建/存在），如下所示：

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

但是显然Spring Boot认为当时不存在并创建它。

因此，为了只运行我创建的实例，我要做的就是提供一个tcp://localhost:61616在application.properties文件中创建实例时（在本例中）添加到连接器的URL
，如下所示

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

然后Spring Boot将连接到该实例，而不创建另一个实例。在属性文件中缺少上述条目的情况下（或者，如果您像我上面那样尝试使用vm：//
localhost？…连接到嵌入式实例），Spring Boot将继续为您实例化一个实例。

我也确实在文档中阅读了此内容：

当Spring
Boot检测到ActiveMQ在类路径上可用时，它也可以配置ConnectionFactory。如果存在代理，则将自动启动并配置嵌入式代理（只要未通过配置指定代理URL）。

但是在我看来，它并没有很好地阐明（但是确实让我思考了正确的方向）。

请告诉我们您是否有不同的发现或我的结论是否正确。谢谢！！！

2020-05-30