我在使用 java 配置让条件 Spring 批处理流程工作时遇到问题。我在 Spring Batch 示例、Spring Batch 测试代码或堆栈溢出中看到的示例往往显示一个条件,其中需要根据条件执行单个步骤,或者它是最后一步,或两者兼而有之。这不是我需要解决的问题。
在程序伪代码中,我希望它的行为类似于
initStep()
if decision1()
subflow1()
middleStep()
if decision2()
subflow2()
lastStep()
所以,subflow1和2是有条件的,但init、middle和last总是执行。这是我的精简测试用例。在当前配置中,执行完subflow1后就退出了。
public class FlowJobTest {
private JobBuilderFactory jobBuilderFactory;
private JobRepository jobRepository;
private JobExecution execution;
@BeforeMethod
public void setUp() throws Exception {
jobRepository = new MapJobRepositoryFactoryBean().getObject();
jobBuilderFactory = new JobBuilderFactory(jobRepository);
execution = jobRepository.createJobExecution("flow", new JobParameters());
}
@Test
public void figureOutFlowJobs() throws Exception {
JobExecutionDecider subflow1Decider = decider(true);
JobExecutionDecider subflow2Decider = decider(false);
Flow subflow1 = new FlowBuilder<Flow>("subflow-1").start(echo("subflow-1-Step-1")).next(echo("subflow-1-Step-2")).end();
Flow subflow2 = new FlowBuilder<Flow>("subflow-2").start(echo("subflow-2-Step-1")).next(echo("subflow-2-Step-2")).end();
Job job = jobBuilderFactory.get("testJob")
.start(echo("init"))
.next(subflow1Decider)
.on("YES").to(subflow1)
.from(subflow1Decider)
.on("*").to(echo("middle"))
.next(subflow2Decider)
.on("YES").to(subflow2)
.from(subflow2Decider)
.on("*").to(echo("last"))
.next(echo("last"))
.build().preventRestart().build();
job.execute(execution);
assertEquals(execution.getStatus(), BatchStatus.COMPLETED);
assertEquals(execution.getStepExecutions().size(), 5);
}
private Step echo(String stepName) {
return new AbstractStep() {
{
setName(stepName);
setJobRepository(jobRepository);
}
@Override
protected void doExecute(StepExecution stepExecution) throws Exception {
System.out.println("step: " + stepName);
stepExecution.upgradeStatus(BatchStatus.COMPLETED);
stepExecution.setExitStatus(ExitStatus.COMPLETED);
jobRepository.update(stepExecution);
}
};
}
private JobExecutionDecider decider(boolean decision) {
return (jobExecution, stepExecution) -> new FlowExecutionStatus(decision ? "YES" : "NO");
}
}
最佳答案
您最初的职位定义应该也能发挥作用,只需稍作调整即可。测试失败,因为作业在第一个子流之后完成(状态为 COMPLETED)。如果您指示它继续执行中间步骤,它应该按预期工作。第二个流程类似的调整。
Job job = jobBuilderFactory.get("testJob")
.start(echo("init"))
.next(subflow1Decider)
.on("YES").to(subflow1).next(echo("middle"))
.from(subflow1Decider)
.on("*").to(echo("middle"))
.next(subflow2Decider)
.on("YES").to(subflow2).next(echo("last"))
.from(subflow2Decider)
.on("*").to(echo("last"))
.build().preventRestart().build();
关于spring - 无法使 Spring Batch 条件流工作,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32340535/