關於POI設定SHEET名稱以及合併單元格，複製單元格方法
阿新 • • 發佈：2019-01-30
//SHEET命名
Workbook workbook = ReadExcel.openExcleFile(srcXlsxPath);
// 獲取合同到期工作簿
Sheet sheet1 = workbook.getSheetAt(0);// 獲取頁籤
workbook.setSheetName(0, "12" + "月合同到期");//合併單元格
sheet1.addMergedRegion(new CellRangeAddress(csize + 2, csize + 2, 0, 6));// 合併單元格 sheet1.addMergedRegion(new CellRangeAddress(2, csize + 2, 12, 12));// 合併單元格
//poi工具類
package com.bpms.util; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.PushbackInputStream; import javax.servlet.ServletOutputStream; import javax.servlet.http.HttpServletResponse; import org.apache.log4j.Logger; import org.apache.poi.POIXMLDocument; import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.openxml4j.opc.OPCPackage; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DateUtil; 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.apache.poi.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFWorkbook; /** * * 讀取excle檔案內容 * * @author liuhh 2014/10/20. * * @version V1.00. * * */ public class ReadExcel { /** 日誌. */ public static Logger logger = Logger.getLogger(ReadExcel.class); /** * 私有構造方法. */ private ReadExcel() { } /** * 開啟excle檔案 * * @param fileName * 帶字尾excle檔名稱 * @return * @throws IOException * @throws InvalidFormatException */ public static Workbook openExcleFile(String filePath) throws Exception { // 定義返回值 Workbook workbook = null; try { // 開啟工作簿 workbook = WorkbookFactory.create(new File(filePath)); } catch (Exception e) { e.printStackTrace(); logger.error(e.getMessage()); } // 返回 return workbook; } public static Workbook createworkbook(String filePath) throws IOException,InvalidFormatException { InputStream inp = new FileInputStream(filePath); if (!inp.markSupported()) { inp = new PushbackInputStream(inp, 8); } if (POIFSFileSystem.hasPOIFSHeader(inp)) { return new HSSFWorkbook(inp); } if (POIXMLDocument.hasOOXMLHeader(inp)) { return new XSSFWorkbook(OPCPackage.open(inp)); } throw new IllegalArgumentException("你的excel版本目前poi解析不了"); } /** * * @param cell * 獲取的單元格 * @return 返回單元格中的值 */ public static Object getCellValue(Cell cell) { // 定義返回值 Object objResult = null; // 判斷單元格中的值 if (cell != null) { // 匹配格式型別 switch (cell.getCellType()) { // 字串型別 case Cell.CELL_TYPE_STRING: objResult = cell.getRichStringCellValue().getString(); break; // 貨幣型別 case Cell.CELL_TYPE_NUMERIC: if (DateUtil.isCellDateFormatted(cell)) { objResult = cell.getDateCellValue(); } else { objResult = cell.getNumericCellValue(); } break; // 布林型別 case Cell.CELL_TYPE_BOOLEAN: objResult = cell.getBooleanCellValue(); break; // 公式 case Cell.CELL_TYPE_FORMULA: try { objResult = cell.getNumericCellValue(); } catch (IllegalStateException e) { objResult = String.valueOf(cell.getRichStringCellValue()); } default: } } // 返回取到的單元格值 return objResult; } /** * 複製單元格 * * @param currentSheet * sheet頁 * @param startRow * 開始行 * @param endRow * 結束行 * @param pPosition * 目標位置 */ public static void copyRows(Sheet currentSheet, int startRow, int endRow, int pPosition) { int pStartRow = startRow - 1; int pEndRow = endRow - 1; int targetRowFrom; int targetRowTo; int columnCount; CellRangeAddress region = null; int i; int j; if (pStartRow == -1 || pEndRow == -1) { return; } for (i = 0; i < currentSheet.getNumMergedRegions(); i++) { region = currentSheet.getMergedRegion(i); if ((region.getFirstRow() >= pStartRow) && (region.getLastRow() <= pEndRow)) { targetRowFrom = region.getFirstRow() - pStartRow + pPosition; targetRowTo = region.getLastRow() - pStartRow + pPosition; CellRangeAddress newRegion = region.copy(); newRegion.setFirstRow(targetRowFrom); newRegion.setFirstColumn(region.getFirstColumn()); newRegion.setLastRow(targetRowTo); newRegion.setLastColumn(region.getLastColumn()); currentSheet.addMergedRegion(newRegion); } } for (i = pStartRow; i <= pEndRow; i++) { XSSFRow sourceRow = (XSSFRow) currentSheet.getRow(i); columnCount = sourceRow.getLastCellNum(); if (sourceRow != null) { XSSFRow newRow = (XSSFRow) currentSheet.createRow(pPosition - pStartRow + i); newRow.setHeight(sourceRow.getHeight()); for (j = 0; j < columnCount; j++) { XSSFCell templateCell = sourceRow.getCell(j); if (templateCell != null) { XSSFCell newCell = newRow.createCell(j); copyCell(templateCell, newCell); } } } } } public static void copyCell(XSSFCell srcCell, XSSFCell distCell) { distCell.setCellStyle(srcCell.getCellStyle()); if (srcCell.getCellComment() != null) { distCell.setCellComment(srcCell.getCellComment()); } int srcCellType = srcCell.getCellType(); distCell.setCellType(srcCellType); if (srcCellType == XSSFCell.CELL_TYPE_NUMERIC) { if (HSSFDateUtil.isCellDateFormatted(srcCell)) { distCell.setCellValue(srcCell.getDateCellValue()); } else { distCell.setCellValue(srcCell.getNumericCellValue()); } } else if (srcCellType == XSSFCell.CELL_TYPE_STRING) { distCell.setCellValue(srcCell.getRichStringCellValue()); } else if (srcCellType == XSSFCell.CELL_TYPE_BLANK) { // nothing21 } else if (srcCellType == XSSFCell.CELL_TYPE_BOOLEAN) { distCell.setCellValue(srcCell.getBooleanCellValue()); } else if (srcCellType == XSSFCell.CELL_TYPE_ERROR) { distCell.setCellErrorValue(srcCell.getErrorCellValue()); } else if (srcCellType == XSSFCell.CELL_TYPE_FORMULA) { distCell.setCellFormula(srcCell.getCellFormula()); } else { // nothing29 } } public static void fileDownload(HttpServletResponse response,String path){ //1.設定檔案ContentType型別，這樣設定，會自動判斷下載檔案型別 response.setContentType("multipart/form-data"); //2.設定檔案頭：最後一個引數是設定下載檔名(假如我們叫a.pdf) response.setHeader("Content-Disposition", "attachment;fileName="+"a.xlsx"); ServletOutputStream out; //通過檔案路徑獲得File物件(假如此路徑中有一個download.pdf檔案) File file = new File(path); try { FileInputStream inputStream = new FileInputStream(file); //3.通過response獲取ServletOutputStream物件(out) out = response.getOutputStream(); int b = 0; byte[] buffer = new byte[512]; while (b != -1){ b = inputStream.read(buffer); //4.寫到輸出流(out)中 out.write(buffer,0,b); } inputStream.close(); out.close(); out.flush(); } catch (IOException e) { e.printStackTrace(); } } }