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- Hefei19881002 2019-06-17 16:09关注
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;public class POIImportDemo {
/**
* 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 ""; } }
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