Question

尝试在Topic消费者上实现Durable功能。为jms使用者和clientID添加了名称。（显然添加了耐用=“真”）

现在据我读过。当主题第一次运行时，主题会将消费者注册为“持久”。

基本上我这样做了，部署了生产者和消费者。它被注册为耐用的消费者。向主题发布消息，消费者获取它。现在我取消部署消费者并发布消费者每次起床时应该收到的另一条消息。当我再次部署消费者时，我得到了常见的临时主题：// XXXXXXXXXXXX目的地不存在。

为什么会这样？我不应该得到“丢失”的消息吗？

这是我目前为发布商提供的jms activemq连接器配置：

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:jbossts="http://www.mulesoft.org/schema/mule/jbossts" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation" xmlns:spring="http://www.springframework.org/schema/beans" xmlns:core="http://www.mulesoft.org/schema/mule/core" version="CE-3.3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd 
http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/current/mule-jms.xsd 
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd 
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd 
http://www.mulesoft.org/schema/mule/jbossts http://www.mulesoft.org/schema/mule/jbossts/current/mule-jbossts.xsd ">
    <jms:activemq-connector name="Active_MQ" specification="1.1" brokerURL="tcp://localhost:61616" validateConnections="false"  doc:name="Active MQ" maxRedelivery="1" persistentDelivery="true" durable="true" clientId="RoutingTopic">
        <reconnect count="5"  />
    </jms:activemq-connector>

    <message-properties-transformer name="MessagePropertiesTransformer" doc:name="Message Properties" overwrite="true">
        <add-message-property key="BACKEND_SUBSCRIBER" value="#[flowVars['backend']]"/>
        <add-message-property key="MULE_EVENT_TIMEOUT" value="60000"/>
    </message-properties-transformer>

    <flow name="jmsFlow1" doc:name="jmsFlow1">
        <http:inbound-endpoint exchange-pattern="request-response" host="localhost" port="8081" path="jms" doc:name="HTTP"/>
        <set-variable variableName="#['id']" value="#[message.inboundProperties['id']]" doc:name="set dynamic id"/>
        <set-variable variableName="#['backend']" value="#[message.inboundProperties['backend']]" doc:name="setting backend"/>
        <set-payload value="#['This is a message test for id '] #[flowVars['id']]" doc:name="set random string as payload"/>
        <choice doc:name="Choice">
            <when expression="#[true]">
                <processor-chain>                
                    <jms:outbound-endpoint exchange-pattern="request-response"  connector-ref="Active_MQ" doc:name="JMS Topic Requestor" transformer-refs="MessagePropertiesTransformer" topic="ESB.Topic">
                    </jms:outbound-endpoint>
                </processor-chain>
            </when>
            <otherwise>
                <processor-chain>
                    <logger message="This is the default case" level="INFO" doc:name="Logger"/>
                </processor-chain>
            </otherwise>
        </choice>
    </flow>
</mule>

这是消费者之一，我得到2，但两者基本相同

<?xml version="1.0" encoding="UTF-8"?>

<mule xmlns:jbossts="http://www.mulesoft.org/schema/mule/jbossts" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:jms="http://www.mulesoft.org/schema/mule/jms" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation" xmlns:spring="http://www.springframework.org/schema/beans" xmlns:core="http://www.mulesoft.org/schema/mule/core" version="CE-3.3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="
http://www.mulesoft.org/schema/mule/jms http://www.mulesoft.org/schema/mule/jms/current/mule-jms.xsd 
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd 
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd 
http://www.mulesoft.org/schema/mule/jbossts http://www.mulesoft.org/schema/mule/jbossts/current/mule-jbossts.xsd ">
    <jms:activemq-connector name="UpCity_Connector" specification="1.1" brokerURL="tcp://localhost:61616" validateConnections="false" maxRedelivery="0" doc:name="Active MQ" clientId="RandomName" durable="true"/>
    <flow name="jmsAdapterConsumerFlow1" doc:name="fmsAdapterConsumerFlow1">
        <jms:inbound-endpoint exchange-pattern="request-response"  connector-ref="UpCity_Connector" doc:name="JMS Replier Consumer" topic="ESB.Topic">
            <jms:selector expression="BACKEND_SUBSCRIBER='randombackend'"/>
        </jms:inbound-endpoint>
        <set-payload value="#[payload + ' returned from a random backend']" doc:name="Add string to payload"/>
        <logger message="#[payload]" level="INFO" doc:name="Logger"/>
    </flow>
</mule>

感谢。

Answer 1

持久消息传递在JMS中有点棘手，因为您的配置/代码必须满足几个条件才能使其正常工作：

在代理的配置中启用持久性（在ActiveMQ中，这可以在David发布的连接字符串中完成，也可以在您的配置xml中完成
创建持久订阅者（ActiveMQ API）

我不确定骡子会创造持久的订阅者。但是，您可以在ActiveMQ's web console中查看该内容。在那里，您可以获得当前持久订阅的列表。

我主题消费者的持久旗帜不起作用？

1 个答案: