[spring+AMQ]DefaultMessageListenerContainer设置sessionTransacted为true，异常重试7次后丢弃

公众号【架构师也是人】 2016-09-22 04:28:30

DefaultMessageListenerContainer设置了sessionTransacted='true'后。如果抛异常是可以rollback重新放回队列，重新处理的。但是这里有个“限制”。就是重新放回队列 7次后，第8次就没有重新放回队列中去了（可能直接丢弃，也可能AMQ那边不接收了？？？）。。与此同时listener就处理后续队列中的message。最终导致的结果是，抛异常的那条message丢失了。
看源码也找不到具体出问题的原因。不知道博主注意到这个问题没有。
附相关代码
1. 接收message的listener：



public class EmailReceiveListener {

    private AtomicInteger count = new AtomicInteger(1);

    public void receive(Email email){

        if (email==null || email.getTitle().contains("3")){

            System.out.println("[ERROR][Email]"+email + ";count"+count.getAndIncrement());

            throw new RuntimeException("3点必须不能开会!!!");

        }else{

            System.out.println("[EmailReceiveListener][Email]"+email);

        }

    }

}

2. 然后是container的配置



    <bean id="emailMessageListenerContainer" class="org.springframework.jms.listener.DefaultMessageListenerContainer">

        <property name="connectionFactory" ref="connectionFactory"/>

        <property name="destination" ref="converterQueue"/>

        <property name="messageListener" ref="emailMessageListenerAdapter"/>

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

    </bean>

3. 最后是发送的简单例子



public static void main(String[] args) {

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(new String[]{"applicationContext-jms-spring.xml"});

        context.start();



EmailSender sender3 = (EmailSender)context.getBean("emailSender");

        Destination converterQueue = (Destination)context.getBean("converterQueue");



        Email email = new Email();

        email.setContent("系统服务化");

        email.setFrom("小黑手");

        email.setSendTo("D team");

        for (int i=0;i<10;i++) {

            try {

                Thread.sleep(Long.valueOf(new Random().nextInt(1000)));

                email.setTitle("下午 "+i+" 点开会");

                sender3.send(converterQueue,email);

            } catch (InterruptedException e) {

                e.printStackTrace();

            }

        }

}

其他就不贴了。都是正常的。
console打印如下：



[EmailReceiveListener][Email]Email{title='下午 0 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 1 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 2 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count1

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count2

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count3

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count4

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count5

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count6

[ERROR][Email]Email{title='下午 3 点开会', content='系统服务化', sendTo='D team', from='小黑手'};count7

[EmailReceiveListener][Email]Email{title='下午 4 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 5 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 6 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 7 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 8 点开会', content='系统服务化', sendTo='D team', from='小黑手'}

[EmailReceiveListener][Email]Email{title='下午 9 点开会', content='系统服务化', sendTo='D team', from='小黑手'}