POI读取合并单元格中的excel数据

 import java.io.File;
 import java.io.IOException;

 import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
 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.usermodel.Workbook;
 import org.apache.poi.ss.usermodel.WorkbookFactory;
 import org.apache.poi.ss.util.CellRangeAddress;
 import org.junit.Test;

 /**
 *
 * @author wcyong
 *
 * @date   2013-6-21
 */
 public class TestReadMergeRegionExcel {

 @Test
 public void testReadExcel() {
 readExcelToObj(“f:\\test\\out3.xls”);
 }

 /**
 * 读取excel数据
 * @param path
 */
 private void readExcelToObj(String path) {

 Workbook wb = null;
 try {
 wb = WorkbookFactory.create(new File(path));
 readExcel(wb, 0, 0, 0);
 } catch (InvalidFormatException e) {
 e.printStackTrace();
 } catch (IOException e) {
 e.printStackTrace();
 }
 }

 /**
 * 读取excel文件
 * @param wb
 * @param sheetIndex sheet页下标：从0开始
 * @param startReadLine 开始读取的行:从0开始
 * @param tailLine 去除最后读取的行
 */
 private void readExcel(Workbook wb,int sheetIndex, int startReadLine, int tailLine) {
 Sheet sheet = wb.getSheetAt(sheetIndex);
 Row row = null;

 for(int i=startReadLine; i<sheet.getLastRowNum()-tailLine+1; i++) {
 row = sheet.getRow(i);
 for(Cell c : row) {
 boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());
 //判断是否具有合并单元格
 if(isMerge) {
 String rs = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex());
 System.out.print(rs + “  “);
 }else {
 System.out.print(getCellValue(c)+”  “);
 }
 }
 System.out.println();

 }

 }

 /**
 * 获取合并单元格的值
 * @param sheet
 * @param row
 * @param column
 * @return
 */
 public 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 ;
 }

 /**
 * 判断合并了行
 * @param sheet
 * @param row
 * @param column
 * @return
 */
 private boolean isMergedRow(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;
 }

 /**
 * 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 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;
 }

 /**
 * 判断sheet页中是否含有合并单元格
 * @param sheet
 * @return
 */
 private boolean hasMerged(Sheet sheet) {
         return sheet.getNumMergedRegions() > 0 ? true : false;
     }

 /**
 * 合并单元格
 * @param sheet
 * @param firstRow 开始行
 * @param lastRow 结束行
 * @param firstCol 开始列
 * @param lastCol 结束列
 */
 private void mergeRegion(Sheet sheet, int firstRow, int lastRow, int firstCol, int lastCol) {
 sheet.addMergedRegion(new CellRangeAddress(firstRow, lastRow, firstCol, lastCol));
 }

 /**
 * 获取单元格的值
 * @param cell
 * @return
 */
 public String getCellValue(Cell cell){

     if(cell == null) return “”;

     if(cell.getCellType() == Cell.CELL_TYPE_STRING){

         return cell.getStringCellValue();

     }else if(cell.getCellType() == Cell.CELL_TYPE_BOOLEAN){

         return String.valueOf(cell.getBooleanCellValue());

     }else if(cell.getCellType() == Cell.CELL_TYPE_FORMULA){

         return cell.getCellFormula() ;

     }else if(cell.getCellType() == Cell.CELL_TYPE_NUMERIC){

         return String.valueOf(cell.getNumericCellValue());

     }
     return “”;
 }
 }