如何在Java工作簿之间复制工作表
如何在Apache poi中的两个不同工作簿之间复制工作表？
该方法缺less引用这个线程。 没有这样的解决scheme。
经过研究和尝试，在这里我的解决scheme。 我用java 1.6和apache-poi 3.8进行了testing
在这里，我不想提供解决scheme为我工作，特别是在这种情况下，我通过一个工作表和inputstream列表（我想合并不同的工作簿）。
我的解决scheme是一个合并的，我已经从这里合并了整个源代码，我想与大家分享这个代码，坚持在同一个问题。
/** * Original version available from: * http://www.coderanch.com/t/420958/open-source/Copying-sheet-excel-file-another **/ import java.io.FileInputStream; import java.io.IOException; import java.util.List; import java.util.HashMap; import java.util.Map; import java.util.Set; import java.util.TreeSet; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; 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 CopySheets { public Workbook mergeExcelFiles(Workbook book, List<InputStream> inList) throws IOException { for (InputStream fin : inList) { Workbook b = WorkbookFactory.create(fin); for (int i = 0; i < b.getNumberOfSheets(); i++) { // not entering sheet name, because of duplicated names copySheets(book.createSheet(),b.getSheetAt(i)); } } return book; } /** * @param newSheet the sheet to create from the copy. * @param sheet the sheet to copy. */ public static void copySheets(Sheet newSheet, Sheet sheet){ copySheets(newSheet, sheet, true); } /** * @param newSheet the sheet to create from the copy. * @param sheet the sheet to copy. * @param copyStyle true copy the style. */ public static void copySheets(Sheet newSheet, Sheet sheet, boolean copyStyle){ int maxColumnNum = 0; Map<Integer, CellStyle> styleMap = (copyStyle) ? new HashMap<Integer, CellStyle>() : null; for (int i = sheet.getFirstRowNum(); i <= sheet.getLastRowNum(); i++) { Row srcRow = sheet.getRow(i); Row destRow = newSheet.createRow(i); if (srcRow != null) { copyRow(sheet, newSheet, srcRow, destRow, styleMap); if (srcRow.getLastCellNum() > maxColumnNum) { maxColumnNum = srcRow.getLastCellNum(); } } } for (int i = 0; i <= maxColumnNum; i++) { newSheet.setColumnWidth(i, sheet.getColumnWidth(i)); } } /** * @param srcSheet the sheet to copy. * @param destSheet the sheet to create. * @param srcRow the row to copy. * @param destRow the row to create. * @param styleMap - */ public static void copyRow(Sheet srcSheet, Sheet destSheet, Row srcRow, Row destRow, Map<Integer, CellStyle> styleMap) { // manage a list of merged zone in order to not insert two times a merged zone Set<CellRangeAddressWrapper> mergedRegions = new TreeSet<CellRangeAddressWrapper>(); destRow.setHeight(srcRow.getHeight()); // reckoning delta rows int deltaRows = destRow.getRowNum()-srcRow.getRowNum(); // pour chaque row for (int j = srcRow.getFirstCellNum(); j <= srcRow.getLastCellNum(); j++) { Cell oldCell = srcRow.getCell(j); // ancienne cell Cell newCell = destRow.getCell(j); // new cell if (oldCell != null) { if (newCell == null) { newCell = destRow.createCell(j); } // copy chaque cell copyCell(oldCell, newCell, styleMap); // copy les informations de fusion entre les cellules //System.out.println("row num: " + srcRow.getRowNum() + " , col: " + (short)oldCell.getColumnIndex()); CellRangeAddress mergedRegion = getMergedRegion(srcSheet, srcRow.getRowNum(), (short)oldCell.getColumnIndex()); if (mergedRegion != null) { //System.out.println("Selected merged region: " + mergedRegion.toString()); CellRangeAddress newMergedRegion = new CellRangeAddress(mergedRegion.getFirstRow()+deltaRows, mergedRegion.getLastRow()+deltaRows, mergedRegion.getFirstColumn(), mergedRegion.getLastColumn()); //System.out.println("New merged region: " + newMergedRegion.toString()); CellRangeAddressWrapper wrapper = new CellRangeAddressWrapper(newMergedRegion); if (isNewMergedRegion(wrapper, mergedRegions)) { mergedRegions.add(wrapper); destSheet.addMergedRegion(wrapper.range); } } } } } /** * @param oldCell * @param newCell * @param styleMap */ public static void copyCell(Cell oldCell, Cell newCell, Map<Integer, CellStyle> styleMap) { if(styleMap != null) { if(oldCell.getSheet().getWorkbook() == newCell.getSheet().getWorkbook()){ newCell.setCellStyle(oldCell.getCellStyle()); } else{ int stHashCode = oldCell.getCellStyle().hashCode(); CellStyle newCellStyle = styleMap.get(stHashCode); if(newCellStyle == null){ newCellStyle = newCell.getSheet().getWorkbook().createCellStyle(); newCellStyle.cloneStyleFrom(oldCell.getCellStyle()); styleMap.put(stHashCode, newCellStyle); } newCell.setCellStyle(newCellStyle); } } switch(oldCell.getCellType()) { case Cell.CELL_TYPE_STRING: newCell.setCellValue(oldCell.getStringCellValue()); break; case Cell.CELL_TYPE_NUMERIC: newCell.setCellValue(oldCell.getNumericCellValue()); break; case Cell.CELL_TYPE_BLANK: newCell.setCellType(HSSFCell.CELL_TYPE_BLANK); break; case Cell.CELL_TYPE_BOOLEAN: newCell.setCellValue(oldCell.getBooleanCellValue()); break; case Cell.CELL_TYPE_ERROR: newCell.setCellErrorValue(oldCell.getErrorCellValue()); break; case Cell.CELL_TYPE_FORMULA: newCell.setCellFormula(oldCell.getCellFormula()); break; default: break; } } /** * Récupère les informations de fusion des cellules dans la sheet source pour les appliquer * à la sheet destination... * Récupère toutes les zones merged dans la sheet source et regarde pour chacune d'elle si * elle se trouve dans la current row que nous traitons. * Si oui, retourne l'objet CellRangeAddress. * * @param sheet the sheet containing the data. * @param rowNum the num of the row to copy. * @param cellNum the num of the cell to copy. * @return the CellRangeAddress created. */ public static CellRangeAddress getMergedRegion(Sheet sheet, int rowNum, short cellNum) { for (int i = 0; i < sheet.getNumMergedRegions(); i++) { CellRangeAddress merged = sheet.getMergedRegion(i); if (merged.isInRange(rowNum, cellNum)) { return merged; } } return null; } /** * Check that the merged region has been created in the destination sheet. * @param newMergedRegion the merged region to copy or not in the destination sheet. * @param mergedRegions the list containing all the merged region. * @return true if the merged region is already in the list or not. */ private static boolean isNewMergedRegion(CellRangeAddressWrapper newMergedRegion, Set<CellRangeAddressWrapper> mergedRegions) { return !mergedRegions.contains(newMergedRegion); } } class CellRangeAddressWrapper implements Comparable<CellRangeAddressWrapper> { public CellRangeAddress range; /** * @param theRange the CellRangeAddress object to wrap. */ public CellRangeAddressWrapper(CellRangeAddress theRange) { this.range = theRange; } /** * @param o the object to compare. * @return -1 the current instance is prior to the object in parameter, 0: equal, 1: after... */ public int compareTo(CellRangeAddressWrapper o) { if (range.getFirstColumn() < o.range.getFirstColumn() && range.getFirstRow() < o.range.getFirstRow()) { return -1; } else if (range.getFirstColumn() == o.range.getFirstColumn() && range.getFirstRow() == o.range.getFirstRow()) { return 0; } else { return 1; } } }