如何使用poi设置图表的文本方向以旋转所有文本270？

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.*;

import java.io.FileOutputStream;
import java.io.OutputStream;

public class ChartTextOrientationExample {
    public static void main(String[] args) {
        try {
            // 创建Workbook对象
            XSSFWorkbook workbook = new XSSFWorkbook();

            // 创建Sheet对象
            Sheet sheet = workbook.createSheet("Sheet1");

            // 创建Chart对象
            XSSFClientAnchor anchor = new XSSFClientAnchor(0, 0, 0, 0, 0, 5, 10, 15);
            Chart chart = sheet.createDrawingPatriarch().createChart(anchor);

            // 获取PlotArea对象
            PlotArea plotArea = chart.getOrCreatePlotArea();

            // 获取Axis对象
            Axis axis = plotArea.getAxis();

            // 设置文本方向为270度
            axis.setOrientation(Orientation.MIN_MAX);

            // 保存Workbook对象到文件或输出流中
            OutputStream outputStream = new FileOutputStream("chart.xlsx");
            workbook.write(outputStream);
            workbook.close();
            outputStream.close();

            System.out.println("图表文本方向设置成功！");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}