已在事务中时启动弹簧批处理作业 [英] Start a spring batch job when already within a transaction

问题描述

我有一个简单的 Spring-Service，它(以及其他任务)使用以下代码启动一个 Spring 批处理作业:

I have simple Spring-Service that (among other tasks) starts a spring batch job with the following code:

@Autowired
private JobRegistry jobRegistry;

@Autowired
private JobLauncher jobLauncher;

public void startMyJob() {
    Job job = jobRegistry.getJob("myJobName");
    JobParameters jobParameters = new JobParametersBuilder().toJobParameters();
    jobLauncher.run(job, jobParameters);
}

只要在调用 Serivce-Method 时没有活动的事务，就可以正常工作.但是，对于活动事务，我收到此异常:

This works fine, as long as there is no transaction active when the Serivce-Method is called. However, with an active transaction, I get this exception:

Caused by: java.lang.IllegalStateException: Existing transaction detected in JobRepository. Please fix this and try again (e.g. remove @Transactional annotations from client).

我无法轻易删除现有事务，因为它是由于某些框架代码无法实现而隐含的.

I cannot easily remove the existing transaction, since it is implied due to some framework code that is not within my reach.

那么，在这种情况下，我怎样才能开始这项工作?新作业不应使用现有事务.它可以只是开始自己的事务 - 但如何配置它以使其工作?

So, how can I start the job anyway within this context? The new job just should not use the existing transaction. It could just start its own transaction - but how to configure it to make it work?

推荐答案

使用 AbstractJobRepositoryFactoryBean.ValidateTransactionState，但要小心使用(警告:龙在前面).

Use AbstractJobRepositoryFactoryBean.ValidateTransactionState, but use carefully (Warning: Dragons ahead).

要使用另一个事务，您可以注入一个自定义的 SimpleJobLauncher.executor 方法 Executor.run 标记为 @Transactional() (或创建一个自定义的 JobLauncher 并对方法 run 执行相同的技巧.

To use another transaction you can inject a custom SimpleJobLauncher.executor with method Executor.run marked as @Transactional() (or create a custom JobLauncher and do the same trick on method run).

我还没有尝试过，因为我还没有遇到过这个问题，但希望能帮到你.

I haven't tried because I haven't faced the problem, but hope can help.

这篇关于已在事务中时启动弹簧批处理作业的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！