FlatFileFooterCallback -如何访问StepExecution进行计数

import org.springframework.batch.core.StepExecution;
import org.springframework.batch.item.file.FlatFileFooterCallback;

public class CustomFooterCallback implements FlatFileFooterCallback {

    private StepExecution stepExecution;

    public CustomFooterCallback(StepExecution stepExecution) {
        this.stepExecution = stepExecution;
    }

    @Override
    public void writeFooter(Writer writer) throws IOException {
        // 获取Step的执行信息
        int readCount = stepExecution.getReadCount();
        int writeCount = stepExecution.getWriteCount();
        int skipCount = stepExecution.getSkipCount();

        // 在文件末尾添加自定义的脚注信息
        writer.write("Read count: " + readCount + "\n");
        writer.write("Write count: " + writeCount + "\n");
        writer.write("Skip count: " + skipCount + "\n");
    }
}