我正在運行一個帶有3個隊列的騾子流(rabbitmq
)。這裏是我的配置XML使用rabbitmq將郵件從一個隊列傳遞到另一個隊列時發生異常
<mule xmlns:file="http://www.mulesoft.org/schema/mule/file" xmlns:amqp="http://www.mulesoft.org/schema/mule/amqp" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
xmlns:spring="http://www.springframework.org/schema/beans" version="EE-3.4.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="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/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd
http://www.mulesoft.org/schema/mule/amqp http://www.mulesoft.org/schema/mule/amqp/current/mule-amqp.xsd
http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd">
<amqp:connector name="AMQP_Connector1" validateConnections="true" fallbackAddresses="localhost:5672" doc:name="AMQP Connector1"/>
<flow name="putToQueue1" doc:name="putToQueue1">
<http:inbound-endpoint exchange-pattern="one-way" host="localhost" port="8081" path="message" doc:name="HTTP"/>
<set-payload value="#[message.inboundProperties['msg']]" doc:name="Set Payload"/>
<processor-chain doc:name="Processor Chain">
<amqp:outbound-endpoint queueName="test.queue1" responseTimeout="10000" doc:name="AMQP1" connector-ref="AMQP_Connector1"/>
<custom-processor class="CustomProcessor" doc:name="Custom Processor"/>
<amqp:outbound-endpoint queueName="test.queue2" responseTimeout="10000" doc:name="AMQP2" connector-ref="AMQP_Connector1"/>
<custom-processor class="CustomProcessor" doc:name="Custom Processor"/>
<amqp:outbound-endpoint queueName="test.queue3" responseTimeout="10000" doc:name="AMQP3" connector-ref="AMQP_Connector1"/>
</processor-chain>
</flow>
</mule>
這裏是CustomProcessor java類
import org.mule.api.MuleEvent;
import org.mule.api.MuleException;
import org.mule.api.processor.MessageProcessor;
public class CustomProcessor implements MessageProcessor {
@Override
public MuleEvent process(MuleEvent event) throws MuleException {
String message = (event.getMessage().getPayload() +" "+ System.currentTimeMillis());
event.getMessage().setPayload(message);
return event;
}
}
當我打的網址在瀏覽器(使用HTTP端點),1條消息通過queue1
和queue2
交付給queue3
。首先,該消息被放在queue1
,該消息將其傳送到queue2
然後queue2
到queue3
。 將消息傳送到其他隊列後,以前的隊列不應保留該消息。 但是當我第二次打到網址時。我得到以下例外
Caused by: java.lang.LinkageError: loader (instance of org/mule/module/launcher/plugin/MulePluginsClassLoader): attempted duplicate class definition for name: "org/mule/transport/amqp/AmqpMuleMessageFactory"
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
..............
某些版本特定的問題或配置細節,也許?我無法在Centos 6.4上使用Studio 3.5.0重現此異常,無法使用Maven。 –