Spring Batch:使用ExcecutionContext传递步骤属性

<bean class="org.springframework.batch.core.scope.StepScope" />

@Bean
@StepScope
public ItemReader<MyObject> itemReader(@Value("#{stepExecutionContext['propertyName']}") String propertyValue) {
    // 创建并配置ItemReader
}

public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) {
    StepExecution stepExecution = chunkContext.getStepContext().getStepExecution();
    ExecutionContext stepExecutionContext = stepExecution.getExecutionContext();

    // 设置属性
    stepExecutionContext.put("propertyName", propertyValue);

    // 获取属性
    String propertyValue = (String) stepExecutionContext.get("propertyName");

    // 执行任务逻辑
    // ...

    return RepeatStatus.FINISHED;
}