如何使用 Apache POI for Java 将 Excel 工作表复制到另一个工作簿中？
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时间：2020-11-02 19:19:55 来源:igfitidea点击:
How to copy a Excel Sheet into another Workbook using Apache POI for Java?
提问by L0MiN
I am trying to copy a Excel sheet into another Excel Workbook. All the possibilities I found browsing the web won't work with formulars.
我正在尝试将 Excel 工作表复制到另一个 Excel 工作簿中。我发现浏览网页的所有可能性都不适用于公式。
The best code I found: http://www.coderanch.com/t/420958/open-source/Copying-sheet-excel-file-excel
我找到的最好的代码：http: //www.coderanch.com/t/420958/open-source/Copying-sheet-excel-file-excel
Do you have any ideas how I can get this to work?
你有什么想法我可以让这个工作吗？
Thanks, Lomin
谢谢，洛明
Edit: Added the Code:
编辑：添加代码：
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.ss.util.CellRangeAddress;
/**
*
* @author jk
* getted from http://jxls.cvs.sourceforge.net/jxls/jxls/src/java/org/jxls/util/Util.java?revision=1.8&view=markup
* by Leonid Vysochyn
* and modified (adding styles copying)
* modified by Philipp L?pmeier (replacing deprecated classes and methods, using generic types)
*/
public final class Util {
/**
* DEFAULT CONSTRUCTOR.
*/
private Util() {}
/**
* @param newSheet the sheet to create from the copy.
* @param sheet the sheet to copy.
*/
public static void copySheets(HSSFSheet newSheet, HSSFSheet 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(HSSFSheet newSheet, HSSFSheet sheet, boolean copyStyle){
int maxColumnNum = 0;
Map<Integer, HSSFCellStyle> styleMap = (copyStyle) ? new HashMap<Integer, HSSFCellStyle>() : null;
for (int i = sheet.getFirstRowNum(); i <= sheet.getLastRowNum(); i++) {
HSSFRow srcRow = sheet.getRow(i);
HSSFRow destRow = newSheet.createRow(i);
if (srcRow != null) {
Util.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(HSSFSheet srcSheet, HSSFSheet destSheet, HSSFRow srcRow, HSSFRow destRow, Map<Integer, HSSFCellStyle> 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());
// pour chaque row
for (int j = srcRow.getFirstCellNum(); j <= srcRow.getLastCellNum(); j++) {
HSSFCell oldCell = srcRow.getCell(j); // ancienne cell
HSSFCell 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(), mergedRegion.getLastRow(), 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(HSSFCell oldCell, HSSFCell newCell, Map<Integer, HSSFCellStyle> styleMap) {
if(styleMap != null) {
if(oldCell.getSheet().getWorkbook() == newCell.getSheet().getWorkbook()){
newCell.setCellStyle(oldCell.getCellStyle());
} else{
int stHashCode = oldCell.getCellStyle().hashCode();
HSSFCellStyle 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 HSSFCell.CELL_TYPE_STRING:
newCell.setCellValue(oldCell.getStringCellValue());
break;
case HSSFCell.CELL_TYPE_NUMERIC:
newCell.setCellValue(oldCell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
newCell.setCellType(HSSFCell.CELL_TYPE_BLANK);
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
newCell.setCellValue(oldCell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_ERROR:
newCell.setCellErrorValue(oldCell.getErrorCellValue());
break;
case HSSFCell.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(HSSFSheet 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);
}
}
and:
和：
import org.apache.poi.ss.util.CellRangeAddress;
public 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;
}
}
}
采纳答案by Zaid Malhis
You have to iterate through the cells that has formula inside and set the Cell Type as "Formula":
您必须遍历内部具有公式的单元格并将单元格类型设置为“公式”：
Your copyCell method will be
您的 copyCell 方法将是
public static void copyCell(HSSFCell oldCell, HSSFCell newCell, Map<Integer, HSSFCellStyle> styleMap) {
if(styleMap != null) {
if(oldCell.getSheet().getWorkbook() == newCell.getSheet().getWorkbook()){
newCell.setCellStyle(oldCell.getCellStyle());
} else{
int stHashCode = oldCell.getCellStyle().hashCode();
HSSFCellStyle 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 HSSFCell.CELL_TYPE_STRING:
newCell.setCellValue(oldCell.getStringCellValue());
break;
case HSSFCell.CELL_TYPE_NUMERIC:
newCell.setCellValue(oldCell.getNumericCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
newCell.setCellType(HSSFCell.CELL_TYPE_BLANK);
break;
case HSSFCell.CELL_TYPE_BOOLEAN:
newCell.setCellValue(oldCell.getBooleanCellValue());
break;
case HSSFCell.CELL_TYPE_ERROR:
newCell.setCellErrorValue(oldCell.getErrorCellValue());
break;
case HSSFCell.CELL_TYPE_FORMULA:
newCell.setCellType(HSSFCell.CELL_TYPE_FORMULA); //Add this line
newCell.setCellFormula(oldCell.getCellFormula());
break;
default:
break;
}
}
