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import org.apache.poi.ss.usermodel.*; import
org.apache.poi.ss.util.CellRangeAddress; import
org.apache.poi.xssf.usermodel.XSSFCell; import
org.apache.poi.xssf.usermodel.XSSFRow; import
org.apache.poi.xssf.usermodel.XSSFSheet; import
org.apache.poi.xssf.usermodel.XSSFWorkbook; import java.io.FileOutputStream;
import java.io.IOException; /** * @author longrong.lang * @version 1.0 *
@description * @date 2020/9/15 9:32 */ public class MergeCellDemo { public
static void main(String[] args) throws IOException { //新建工作簿 XSSFWorkbook
xssfWorkbook = new XSSFWorkbook(); //新建工作表 XSSFSheet sheet =
xssfWorkbook.createSheet("工作表1"); //指定合并开始行、合并结束行 合并开始列、合并结束列 CellRangeAddress
rangeAddress = new CellRangeAddress(0, 0, 0, 1); //添加要合并地址到表格
sheet.addMergedRegion(rangeAddress); //创建行，指定起始行号，从0开始 XSSFRow row =
sheet.createRow(0); //创建单元格，指定起始列号，从0开始 XSSFCell cell = row.createCell(0);
//设置单元格内容 cell.setCellValue("我的合并后单元格"); //创建样式对象 CellStyle style =
xssfWorkbook.createCellStyle(); //设置样式对齐方式：水平垂直居中
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER); //设定填充单色
style.setFillPattern(FillPatternType.SOLID_FOREGROUND); //设定背景颜色
style.setFillForegroundColor(IndexedColors.PINK.getIndex()); //为指定单元格设定样式
cell.setCellStyle(style); FileOutputStream fileOutputStream = new
FileOutputStream("d:\aaa.xlsx"); xssfWorkbook.write(fileOutputStream);
fileOutputStream.close(); } }