poi读取合并单元格
学习了：/ycb1689/article/details/9764191
进行了列合并单元格的修正；原来是我自己找错了地方；
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 -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(c.getRichStringCellValue()+” “); } } 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 “”; } }
