如何在春季批处理中使用单个作业/JMSwriter在多个队列上发布 [英] How to post on multiple queues using single job/ JMSwriter in spring batch

问题描述

我是Spring Batch的新手，最近开始使用它.

I am a newbie at Spring Batch and have recently started using it.

我有一个要求，我需要使用单个Job在不同队列上发布/写入从每个DB记录读取的消息.因为我必须使用阅读器来读取数据库中的消息，并使用处理器来决定必须在哪个队列上发布它.

I have a requirement where I need to post/write the messages read from each DB record on different queues using single Job. As I have to use reader to read the messages from DB and use processor to decide on which queue I have to post it.

所以我的问题是我可以使用单个JMSwriter将消息发布到不同的队列中，因为我必须使用单个Job和DB Reader.

So my question is Can I use single JMSwriter to post the messages on different queues as I have to use single Job and DB Reader.

预先感谢

推荐答案

据我所知，JMSwriter不支持它(它写入jmsTemplate的默认目标位置).

As I know JMSwriter not supports it (it writes to default destination of jmsTemplate).

但是您可以只实现自己的ItemWriter，将所有jmsTemplates注入其中，并编写自定义决策逻辑以选择适当的目标并写入它.

But you may just implement your own ItemWriter, inject all jmsTemplates in it and write custom decistion logic to select appropriate destionation and write to it.

另一种方法-使用 ClassifierCompositeItemWriter ，然后放置一组JmsWriters，然后根据您的分类器选择一个

Another way - use ClassifierCompositeItemWriter , put a set of JmsWriters to it and select one by your classifier

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