POI获取合并单元格的值

POI获取合并单元格时，如果是遍历获取合并单元格的所有子单元格的值，office的excel都会有值，wps的excel只会第一个子单元格有值，其他子单元格都没值，即cell=null。故意凡是获取合并单元格的值，都获取第一个子单元格的值即可

package com.oop.createObj;import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.util.CellRangeAddress;
import java.io.FileInputStream;
import java.util.Arrays;
import java.util.stream.Stream;/*** @ProjectName: spring-boot-lantian* @Package: com.oop.createObj* @ClassName: SendFactoryTest* @Author: zhangs* @Email: 853632587@qq.com* @Description: 工厂模式测试* @Date: 2020/11/4 15:53* @Version: 1.0*/
public class SendFactoryTest {public static void main(String[] args) throws Exception {//Sender mail= SendFactory.produceMail();//mail.send();HSSFWorkbook wk=new HSSFWorkbook(new FileInputStream("E://订单导出.xls"));HSSFSheet sheet=wk.getSheetAt(0);int rows=sheet.getPhysicalNumberOfRows();int cells=sheet.getRow(0).getPhysicalNumberOfCells();for(int r=0;r<rows;r++){HSSFRow row=sheet.getRow(r);StringBuilder str=new StringBuilder();for(int c=0;c<cells;c++){HSSFCell cell=row.getCell(c);if(isMergedRegion(sheet,r,c)){str.append(">>>"+getMergedRegionValue(sheet,r,c)+"||");}else{str.append(">>>"+row.getCell(c)+"||");}}System.out.println(r+"str"+str);str.setLength(0);}}/*** 判断指定的单元格是否是合并单元格* @param sheet* @param row 行下标* @param column 列下标* @return*/private static  boolean isMergedRegion(Sheet sheet, int row , int column) {int sheetMergeCount = sheet.getNumMergedRegions();for (int i = 0; i < sheetMergeCount; i++) {CellRangeAddress range = sheet.getMergedRegion(i);int firstColumn = range.getFirstColumn();int lastColumn = range.getLastColumn();int firstRow = range.getFirstRow();int lastRow = range.getLastRow();if(row >= firstRow && row <= lastRow){if(column >= firstColumn && column <= lastColumn){return true;}}}return false;}/*** 获取合并单元格的值* @param sheet* @param row* @param column* @return*/public static String getMergedRegionValue(Sheet sheet ,int row , int column){int sheetMergeCount = sheet.getNumMergedRegions();for(int i = 0 ; i < sheetMergeCount ; i++){CellRangeAddress ca = sheet.getMergedRegion(i);int firstColumn = ca.getFirstColumn();int lastColumn = ca.getLastColumn();int firstRow = ca.getFirstRow();int lastRow = ca.getLastRow();if(row >= firstRow && row <= lastRow){if(column >= firstColumn && column <= lastColumn){Row fRow = sheet.getRow(firstRow);Cell fCell = fRow.getCell(firstColumn);return getCellValue(fCell) ;}}}return null ;}/*** 获取单元格的值* @param cell* @return*/public  static String getCellValue(Cell cell){if(cell == null) return "";return cell.toString();}public static void main1(String[] args){Object[][] rowName = new Object[][]{{"序号",2000,"NM"},{"分组编号",2000,"NM"},{"订单编号",6500,"NM"},{"第三方订单号",6500,"CM"},{"SKU",2500,"NM"},{"订单金额",2500,"CM"},{"运费",2500,"CM"},{"商品名称",12000,"NM"},{"规格",7000,"NM"},{"单位",2500,"NM"},{"数量",2500,"NM"},{"单价",2500,"NM"},{"金额",2500,"NM"}, {"税率",2500,"NM"},{"税额",2500,"NM"},{"结算主体",7000,"M"},{"发票抬头",12000,"M"},{"发票类型",2500,"M"},{"客户名称",7000,"M"},{"项目名称",5000,"M"},{"采购员",5000,"M"},{"收件人",6500,"M"},{"详细地址",7000,"M"},{"店铺",7000,"M"},{"订单状态",2500,"CM"},{"订单标签",4500,"CM"},{"结算状态",4500,"CM"},{"发票编号",5000,"CM"},{"订单开始时间",5000,"CM"},{"审批完成时间",5000,"CM"},{"订单完成时间",5000,"CM"},{"下单月",5000,"CM"}, {"订单完成月",5000,"CM"},{"商品一级分类",5000,"NM"}, {"商品二级分类",5000,"NM"}, {"商品三级分类",5000,"NM"}};Stream.iterate(0, i -> i + 1).limit(rowName.length).forEach(i -> System.out.println(rowName[i][2]));}
}

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