java 将sheet页合并

在Java中将sheet页合并的方法如下：

1. 获取Sheet对象：Workbook workbook = WorkbookFactory.create(new FileInputStream("文件路径"));

2. 取得sheet：Sheet sheet = workbook.getSheetAt(0);

3. 定义合并单元格的起始行号、终止行号、起始列号、终止列号：int firstRow = 0, lastRow = 3, firstCol = 0, lastCol = 2;

4. 调用RegionUtil类的静态方法：RegionUtil.setBorderTop(style, border);
RegionUtil.setBorderLeft(style, border);
RegionUtil.setBorderRight(style, border);
RegionUtil.setBorderBottom(style, border);

5. 合并单元格：sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));

6. 输出生成的Excel文件：FileOutputStream out = new FileOutputStream("文件路径");
workbook.write(out);
out.close();

通过上述代码，就可以在Java中将sheet页合并。