activemq 事务--遇到异常始终回滚

转自：https://blog.csdn.net/lsm135/article/details/74945116

1. 启用消息事务
<property name="sessionTransacted" value="true"/>

2. 当消息在消费的时候，如果用户程序抛出Exception，则消息会回滚重传（mq里面的未消费消息数目不变），
spring 的activemq默认最多重传6次，超过6次，即使抛出了异常，这个消费仍然被消费不可回滚。
jms.redeliveryPolicy.maximumRedeliveries=6（默认）
我们可以设置brokerURL里面的jms.redeliveryPolicy.maximumRedeliveries=-1
-1表示可以无限次重传，0表示不重传。

注意中间要用 html转移符 & (就是url查询字符串里的&字符)

3.消息队列回滚的触发--程序本身运行异常，比如数据库操作异常，如果自己用程序去检查数据库更新条数，如果小于1，程序可以人为编写代码，人为

抛出一个RuntimeException. 这两种情况都能触发消息的rollback

如在onMesssage()里，或者内部嵌套的方法里

throw new RuntimeException("Update DB failed.");

最终配置文件如下

appContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<import resource="mybatisContext.xml" />
<import resource="shardingContext.xml" />


<bean id="jmsFactory" class="org.apache.activemq.spring.ActiveMQConnectionFactory">
<property name="brokerURL"
value="failover:(tcp://10.0.0.9:61616)?randomize=false&timeout=3000&initialReconnectDelay=100&jms.useAsyncSend=true&jms.redeliveryPolicy.maximumRedeliveries=-1" />
</bean>

<bean id="jmsTemplate" class="org.springframework.jms.core.JmsTemplate">
<property name="connectionFactory">

<bean class="org.springframework.jms.connection.SingleConnectionFactory">
<property name="targetConnectionFactory">
<ref local="jmsFactory" />
</property>
</bean>
</property>
</bean>

<bean id="smsSendForMQListener"
class="org.springframework.jms.listener.DefaultMessageListenerContainer">
<property name="connectionFactory">
<ref bean="jmsFactory" />
</property>
<property name="destinationName">
<value>DistributePics</value>
</property>
<property name="messageListener">
<ref bean="saveListener" />
</property>

<property name="sessionTransacted" value="true"/>
</bean>

<context:component-scan base-package="com.x.service"></context:component-scan>
<context:component-scan base-package="com.x.controller.**"></context:component-scan>
<context:component-scan base-package="com.x.listener"></context:component-scan>
<context:component-scan base-package="com.x.spring"></context:component-scan>
</beans>

java程序如下：

package com.x.imgapp.listener;
import java.util.concurrent.Future;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.ObjectMessage;
import javax.jms.BytesMessage;
import org.springframework.stereotype.Component;
import com.x.imgapp.common.model.MsgBean;
import com.x.imgapp.concurrent.AppExecutor;
import com.x.imgapp.concurrent.MoveThread;
import org.apache.activemq.command.ActiveMQBytesMessage;
import org.apache.activemq.util.ByteSequence;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
*
* @author frank.liu
*
*/
@Component("saveListener")
public class SaveDBListener implements MessageListener {
private static final Logger logger = LoggerFactory.getLogger(SaveDBListener.class);
private static Long receiveCount = 0L;
@Override
public void onMessage(Message message) {
logger.info("Step into onMessage()------------------------------->");
ActiveMQBytesMessage msg = (ActiveMQBytesMessage) message;
ByteSequence sequence = msg.getContent();
String msgStr = new String(sequence.data);
//
// Future<Integer> future = AppExecutor.getExecutor().submit(new MoveThread(msgStr));
logger.info("receiveCount:{}", ++receiveCount);
throw new RuntimeException("Update DB failed.");
}
}

activemq 事务--遇到异常始终回滚

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