如何从StepExecutionContext获取价值

   @Override

   public void beforeStep(StepExecution stepExecution) {

       ExecutionContext executionContext = stepExecution.getExecutionContext();

       executionContext.put("key", "value"); // 将需要传递的值存储在StepExecutionContext中

   }

   @Override

   public ExitStatus afterStep(StepExecution stepExecution) {

       return null;

   }

   return stepBuilderFactory.get("myStep")

           .listener(new MyStepExecutionListener()) // 添加StepExecutionListener

           .tasklet(myTasklet())

           .build();

   @Override

   public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception {

       StepExecution stepExecution = chunkContext.getStepContext().getStepExecution();

       ExecutionContext executionContext = stepExecution.getExecutionContext();

       String value = executionContext.getString("key"); // 从StepExecutionContext中获取值

       // 使用获取到的值进行后续处理

       return RepeatStatus.FINISHED;

   }