JAVA Apache POI Excel：为单元格范围添加边框答案

【问题标题】：JAVA Apache POI Excel: add borders to cell rangeJAVA Apache POI Excel：为单元格范围添加边框
【发布时间】：2015-02-17 15:28:07
【问题描述】：

有没有办法使用 Java 和 Apache POI 为单元格区域添加边框？

像 A1:B2 应该得到一个上下左右粗边框 - 样式？

我知道如何为单个单元格创建和应用样式，我可能会遍历单元格并应用适当的样式，但我确信有更简单的方法。

【问题讨论】：

标签： java excel apache apache-poi

【解决方案1】：

我已经弄明白了。实际上在 apache poi 页面上有一个示例，我只是没有找到我一直在搜索的关键字。

CellRangeAddress region = CellRangeAddress.valueOf(A1:B2);
short borderStyle = CellStyle.BORDER_MEDIUM;
RegionUtil.setBorderBottom(borderStyle, region, activeSheet, excelWorkbook);
RegionUtil.setBorderTop(borderStyle, region, activeSheet, excelWorkbook);
RegionUtil.setBorderLeft(borderStyle, region, activeSheet, excelWorkbook);
RegionUtil.setBorderRight(borderStyle, region, activeSheet, excelWorkbook);

【讨论】：

CellRangeAddress region = new CellRangeAddress(firstRow, lastRow, firstCol, lastCol); RegionUtil.setBorderBottom(BorderStyle.DASHED, region, worksheet); ...

【解决方案2】：

3.16 发生了变化

CellRangeAddress region = new CellRangeAddress(6, 8, 1, 10);
RegionUtil.setBorderBottom(BorderStyle.THIN, region, sheet);
RegionUtil.setBorderTop(BorderStyle.THIN, region, sheet);
RegionUtil.setBorderLeft(BorderStyle.THIN, region, sheet);
RegionUtil.setBorderRight(BorderStyle.THIN, region, sheet);

【讨论】：

【解决方案3】：

RegionUtil 在我的例子中将除白色以外的所有背景颜色变为黑色。这是我的解决方法：

public final class BorderUtils {

    public static void setBorder(Sheet sheet, BorderStyle borderStyle, CellRangeAddress region) {
        setBorderTop(sheet, borderStyle, region);
        setBorderBottom(sheet, borderStyle, region);
        setBorderLeft(sheet, borderStyle, region);
        setBorderRight(sheet, borderStyle, region);
    }

    public static void setBorderTop(Sheet sheet, BorderStyle borderStyle, CellRangeAddress region) {
        Row row = sheet.getRow(region.getFirstRow());
        for (int i=region.getFirstColumn() ; i<=region.getLastColumn() ; i++) {
            Cell cell = row.getCell(i);
            CellStyle cellStyle = cloneCellStyle(sheet, cell);
            cellStyle.setBorderTop(borderStyle);
            cell.setCellStyle(cellStyle);
        }
    }

    public static void setBorderBottom(Sheet sheet, BorderStyle borderStyle, CellRangeAddress region) {
        Row row = sheet.getRow(region.getLastRow());
        for (int i=region.getFirstColumn() ; i<=region.getLastColumn() ; i++) {
            Cell cell = row.getCell(i);
            CellStyle cellStyle = cloneCellStyle(sheet, cell);
            cellStyle.setBorderBottom(borderStyle);
            cell.setCellStyle(cellStyle);
        }
    }

    public static void setBorderLeft(Sheet sheet, BorderStyle borderStyle, CellRangeAddress region) {
        for (int i=region.getFirstRow() ; i<=region.getLastRow() ; i++) {
            Cell cell = sheet.getRow(i).getCell(region.getFirstColumn());
            CellStyle cellStyle = cloneCellStyle(sheet, cell);
            cellStyle.setBorderLeft(borderStyle);
            cell.setCellStyle(cellStyle);
        }
    }

    public static void setBorderRight(Sheet sheet, BorderStyle borderStyle, CellRangeAddress region) {
        for (int i=region.getFirstRow() ; i<=region.getLastRow() ; i++) {
            Cell cell = sheet.getRow(i).getCell(region.getLastColumn());
            CellStyle cellStyle = cloneCellStyle(sheet, cell);
            cellStyle.setBorderRight(borderStyle);
            cell.setCellStyle(cellStyle);
        }
    }

}

【讨论】：