Java 如何配置OpenLiberty 18.0.0.2以使用Liberty嵌入式消息传递?
我试图将OpenLiberty 18.0.0.2配置为使用嵌入式消息发送一些简单的JMS消息 我当前的Java 如何配置OpenLiberty 18.0.0.2以使用Liberty嵌入式消息传递?,java,jms,websphere-liberty,open-liberty,java-ee-8,Java,Jms,Websphere Liberty,Open Liberty,Java Ee 8,我试图将OpenLiberty 18.0.0.2配置为使用嵌入式消息发送一些简单的JMS消息 我当前的server.xml如下所示: <?xml version="1.0" encoding="UTF-8"?> <server description="new server"> <featureManager> <feature>javaee-8.0</feature> <feature>mpConfi
server.xml
如下所示:
<?xml version="1.0" encoding="UTF-8"?>
<server description="new server">
<featureManager>
<feature>javaee-8.0</feature>
<feature>mpConfig-1.2</feature>
<feature>mpMetrics-1.1</feature>
<feature>wasJmsServer-1.0</feature>
<feature>wasJmsClient-2.0</feature>
<feature>localConnector-1.0</feature>
</featureManager>
<quickStartSecurity userName="admin" userPassword="adminpwd" />
<httpEndpoint id="defaultHttpEndpoint" httpPort="9080" httpsPort="9443" />
<applicationManager autoExpand="true" />
<applicationMonitor updateTrigger="mbean" />
<messagingEngine>
<queue id="QUEUE1" />
</messagingEngine>
<jmsQueueConnectionFactory jndiName="jms/JmsFactory">
<properties.wasJms remoteServerAddress="localhost:7276:BootStrapBasicMessaging" />
</jmsQueueConnectionFactory>
<jmsQueue jndiName="jms/JmsQueue">
<properties.wasJms queueName="QUEUE1" />
</jmsQueue>
</server>
public class JmsMessageSender {
@Resource(mappedName = "jms/JmsFactory")
private ConnectionFactory jmsFactory;
@Resource(mappedName = "jms/JmsQueue")
private Queue jmsQueue;
public void send() {
TextMessage message;
try (Connection connection = jmsFactory.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(jmsQueue)) {
message = session.createTextMessage();
message.setText("Hello World!");
producer.send(message);
} catch (JMSException e) {
e.printStackTrace();
}
}
}
当我运行我的应用程序时,当我尝试将消息发送到嵌入式消息队列时,会出现以下异常:
javax.jms.InvalidDestinationException: CWSIA0281E: The specified value null is not allowed for Destination.
[err] at com.ibm.ws.sib.api.jms.impl.JmsDestinationImpl.checkNativeInstance(JmsDestinationImpl.java:993)
[err] at [internal classes]
看起来我的代码无法通过JNDI
获得队列目标。我是否错误地配置了嵌入式消息传递,或者源代码中有错误
更新1:
我更新了源代码,因此不会将目标传递给.send()
方法。现在,我在启动时遇到以下错误:
[ERROR ] cdi.resource.injection.error.CWOWB1000E
CWNEN0030E: The server was unable to obtain an object instance for the java:comp/env/de.rieckpil.blog.JmsMessageSender/jmsQueue reference.
The exception message was: CWNEN1004E: The server was unable to find the de.rieckpil.blog.JmsMessageSender/jmsQueue default binding with the javax.jms.Queue type for the java:comp/env/de.rieckpil.blog.JmsMessageSender/jmsQueue reference.
更新2:
现在可以发送消息了,但我无法接收消息。我的消息驱动bean如下所示(功能mdb-3.2
已启用):
编辑:在评论资源注入存在问题后更新 首先,修复JMS API用法,使其只传入目标一次(而不是同时传入
createProducer()
和send()
。否则,您可能会遇到CWSIA0066E故障
其次,将@Resource
属性从mappedName更改为lookup
这些变化反映如下:
@Resource
注入
最后,@Resource
注入在任何旧POJO中都不起作用,只在容器扫描的特殊类中起作用。尝试将注入移动到servlet、EJB或CDI管理的bean中
术语说明:
虽然我可以理解为什么您会想到将此称为“嵌入式MQ”,但您在这里使用的“消息传递引擎”是由实际的名称提供的
它也是一个JMS提供程序。也就是说,它实现了JMS API,MQ也是IBM提供的另一个JMS提供程序,可以在Liberty中使用。感谢您的帮助。我更新了问题中的代码库并尝试了您的修改。现在我收到了一个不同的错误:
CWOWB1000E
好的,我重新组织了响应,因为您可能有我的服务器启用了功能mdb-3.2
,但我没有收到任何数据。我为简单的消息驱动bean更新了问题。我知道这是您的一个示例,但mdb part似乎更适合单独提问。您可能需要为MDB配置activationSpec
@MessageDriven(activationConfig = {
@ActivationConfigProperty(propertyName = "destination",
propertyValue = "jms/JmsQueue"),
@ActivationConfigProperty(propertyName = "destinationType",
propertyValue = "javax.jms.Queue")
})
public class JmsMessageReader implements MessageListener {
@Override
public void onMessage(Message message) {
TextMessage textMessage = (TextMessage) message;
try {
System.out.println("Message arrived: " + textMessage.getText());
} catch (JMSException e) {
System.err.println(e.getMessage());
}
}
}
@Resource(lookup = "jms/JmsFactory")
private ConnectionFactory jmsFactory;
@Resource(lookup = "jms/JmsQueue")
private Queue jmsQueue;
public void send() {
TextMessage message;
try (Connection connection = jmsFactory.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(jmsQueue)) {
message = session.createTextMessage();
message.setText("Hello World!");
// Don't pass in destination again since you set it in createProducer()
producer.send(message);
// ...