java - Spring 批处理:PreparedStatementSetter中的JobExecution

我有一个带有PreparedStatementSetter的Spring批处理，用于查询阅读器步骤。我想从之前保存到ExecutionContext中的PreparedStatementSetter访问全局数据。

我如何从这个PreparedStatementSetter访问ExecutionContext？

@Component
public class CurrentBatchIdPreparedStatementSetter implements PreparedStatementSetter
{
    @Override
    public void setValues(PreparedStatement preparedStatement) throws SQLException
    {
        // how to access to ExecutionContext here ?
    }
}

谢谢

我们可以

最佳答案

如果范围是step，我们可以从步骤执行中获取ExecutionContext。

    @Component
    public class CurrentBatchIdPreparedStatementSetter implements PreparedStatementSetter
    {
       @Value("#{stepExecution}")
       private StepExecution stepExecution;

        @Override
        public void setValues(PreparedStatement preparedStatement) throws SQLException
        {
            final ExecutionContext executionContext = stepExecution.getExecutionContext();
            //Do your operations here
        }
    }

您也可以从作业执行上下文中获得相同的信息。

  @Value("#{jobExecution}")
   private JobExecution jobExecution;
   //inside method
   final ExecutionContext executionContext = jobExecution.getExecutionContext();

或者您可以轻松地从作业执行上下文中获取价值。

        @Value ( "# {jobExecutionContext ['param1']}" )
        private String  param1;
        @Value ( "# {jobExecutionContext ['param2']}" )
        private String  param2;