Java POI库中如何为Excel单元格区域添加各种样式的边框？

// 创建一个新的工作簿
Workbook workbook = new Workbook();

IWorksheet worksheet = workbook.getWorksheets().get(0);
IRange rangeB2_E6 = worksheet.getRange("B2:E6");

// 设置外边框样式
rangeB2_E6.getBorders().setLineStyle(BorderLineStyle.DashDot);
rangeB2_E6.getBorders().setColor(Color.GetGreen());

// 设置内部水平边框样式
rangeB2_E6.getBorders().get(BordersIndex.InsideHorizontal).setLineStyle(BorderLineStyle.Dashed);
rangeB2_E6.getBorders().get(BordersIndex.InsideHorizontal).setColor(Color.GetTomato());

// 设置内部垂直边框样式
rangeB2_E6.getBorders().get(BordersIndex.InsideVertical).setLineStyle(BorderLineStyle.Double);
rangeB2_E6.getBorders().get(BordersIndex.InsideVertical).setColor(Color.GetBlue());

// 单独设置顶部边框样式
rangeB2_E6.getBorders().get(BordersIndex.EdgeTop).setLineStyle(BorderLineStyle.Medium);
rangeB2_E6.getBorders().get(BordersIndex.EdgeTop).setColor(Color.GetRed());


// 保存到Excel文件
workbook.save("AddingBordersToRange.xlsx");