PoiUtil.java 用于excel间sheet复制

前言：apache提供的poi功能确实比较强大，可是不明白为何没有相应的方法实现不一样excel文件中sheet的复制功能。这也是本文整理PoiUtil工具类的初衷。网上有相关的解决方案，在参考了网上诸多的解决方案、示例代码以后，就有了该工具类，特别感谢各位前辈，让我可以站在巨人的肩膀上，用拳头抠抠鼻屎。废话很少说了，下面是PoiUtil工具类的源码：

package com.poi.extend;

import java.util.HashMap;
import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFComment;
import org.apache.poi.hssf.usermodel.HSSFPalette;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.CellRangeAddress;
import org.apache.poi.hssf.util.HSSFColor;

/**
 * POI工具类 功能点： 
 * 一、实现excel的sheet复制，复制的内容包括单元的内容、样式、注释
 * 二、setMForeColor修改HSSFColor.YELLOW的色值，setMBorderColor修改PINK的色值
 * 
 * @author Administrator
 */
public final class PoiUtil {

	/**
	 * 功能：拷贝sheet
	 * 实际调用 	copySheet(targetSheet, sourceSheet, targetWork, sourceWork, true)
	 * @param targetSheet
	 * @param sourceSheet
	 * @param targetWork
	 * @param sourceWork                                                                   
	 */
	public static void copySheet(HSSFSheet targetSheet, HSSFSheet sourceSheet,
			HSSFWorkbook targetWork, HSSFWorkbook sourceWork) throws Exception{
		if(targetSheet == null || sourceSheet == null || targetWork == null || sourceWork == null){
			throw new IllegalArgumentException("调用PoiUtil.copySheet()方法时，targetSheet、sourceSheet、targetWork、sourceWork都不能为空，故抛出该异常！");
		}
		copySheet(targetSheet, sourceSheet, targetWork, sourceWork, true);
	}

	/**
	 * 功能：拷贝sheet
	 * @param targetSheet
	 * @param sourceSheet
	 * @param targetWork
	 * @param sourceWork
	 * @param copyStyle					boolean 是否拷贝样式
	 */
	public static void copySheet(HSSFSheet targetSheet, HSSFSheet sourceSheet,
			HSSFWorkbook targetWork, HSSFWorkbook sourceWork, boolean copyStyle)throws Exception {
		
		if(targetSheet == null || sourceSheet == null || targetWork == null || sourceWork == null){
			throw new IllegalArgumentException("调用PoiUtil.copySheet()方法时，targetSheet、sourceSheet、targetWork、sourceWork都不能为空，故抛出该异常！");
		}
		
		//复制源表中的行
		int maxColumnNum = 0;

		Map styleMap = (copyStyle) ? new HashMap() : null;
		
		HSSFPatriarch patriarch = targetSheet.createDrawingPatriarch(); //用于复制注释
		for (int i = sourceSheet.getFirstRowNum(); i <= sourceSheet.getLastRowNum(); i++) {
			HSSFRow sourceRow = sourceSheet.getRow(i);
			HSSFRow targetRow = targetSheet.createRow(i);
			
			if (sourceRow != null) {
				copyRow(targetRow, sourceRow,
						targetWork, sourceWork,patriarch, styleMap);
				if (sourceRow.getLastCellNum() > maxColumnNum) {
					maxColumnNum = sourceRow.getLastCellNum();
				}
			}
		}
		
		//复制源表中的合并单元格
		mergerRegion(targetSheet, sourceSheet);
		
		//设置目标sheet的列宽
		for (int i = 0; i <= maxColumnNum; i++) {
			targetSheet.setColumnWidth(i, sourceSheet.getColumnWidth(i));
		}
	}
	
	/**
	 * 功能：拷贝row
	 * @param targetRow
	 * @param sourceRow
	 * @param styleMap
	 * @param targetWork
	 * @param sourceWork
	 * @param targetPatriarch
	 */
	public static void copyRow(HSSFRow targetRow, HSSFRow sourceRow,
			HSSFWorkbook targetWork, HSSFWorkbook sourceWork,HSSFPatriarch targetPatriarch, Map styleMap) throws Exception {
		if(targetRow == null || sourceRow == null || targetWork == null || sourceWork == null || targetPatriarch == null){
			throw new IllegalArgumentException("调用PoiUtil.copyRow()方法时，targetRow、sourceRow、targetWork、sourceWork、targetPatriarch都不能为空，故抛出该异常！");
		}
		
		//设置行高
		targetRow.setHeight(sourceRow.getHeight());
		
		for (int i = sourceRow.getFirstCellNum(); i <= sourceRow.getLastCellNum(); i++) {
			HSSFCell sourceCell = sourceRow.getCell(i);
			HSSFCell targetCell = targetRow.getCell(i);
			
			if (sourceCell != null) {
				if (targetCell == null) {
					targetCell = targetRow.createCell(i);
				}
				
				//拷贝单元格，包括内容和样式
				copyCell(targetCell, sourceCell, targetWork, sourceWork, styleMap);
				
				//拷贝单元格注释
				copyComment(targetCell,sourceCell,targetPatriarch);
			}
		}
	}
	
	/**
	 * 功能：拷贝cell，依据styleMap是否为空判断是否拷贝单元格样式
	 * @param targetCell			不能为空
	 * @param sourceCell			不能为空
	 * @param targetWork			不能为空
	 * @param sourceWork			不能为空
	 * @param styleMap				能够为空				
	 */
	public static void copyCell(HSSFCell targetCell, HSSFCell sourceCell, HSSFWorkbook targetWork, HSSFWorkbook sourceWork,Map styleMap) {
		if(targetCell == null || sourceCell == null || targetWork == null || sourceWork == null ){
			throw new IllegalArgumentException("调用PoiUtil.copyCell()方法时，targetCell、sourceCell、targetWork、sourceWork都不能为空，故抛出该异常！");
		}
		
		//处理单元格样式
		if(styleMap != null){
			if (targetWork == sourceWork) {
				targetCell.setCellStyle(sourceCell.getCellStyle());
			} else {
				String stHashCode = "" + sourceCell.getCellStyle().hashCode();
				HSSFCellStyle targetCellStyle = (HSSFCellStyle) styleMap
						.get(stHashCode);
				if (targetCellStyle == null) {
					targetCellStyle = targetWork.createCellStyle();
					targetCellStyle.cloneStyleFrom(sourceCell.getCellStyle());
					styleMap.put(stHashCode, targetCellStyle);
				}
				
				targetCell.setCellStyle(targetCellStyle);
			}
		}
		
		//处理单元格内容
		switch (sourceCell.getCellType()) {
		case HSSFCell.CELL_TYPE_STRING:
			targetCell.setCellValue(sourceCell.getRichStringCellValue());
			break;
		case HSSFCell.CELL_TYPE_NUMERIC:
			targetCell.setCellValue(sourceCell.getNumericCellValue());
			break;
		case HSSFCell.CELL_TYPE_BLANK:
			targetCell.setCellType(HSSFCell.CELL_TYPE_BLANK);
			break;
		case HSSFCell.CELL_TYPE_BOOLEAN:
			targetCell.setCellValue(sourceCell.getBooleanCellValue());
			break;
		case HSSFCell.CELL_TYPE_ERROR:
			targetCell.setCellErrorValue(sourceCell.getErrorCellValue());
			break;
		case HSSFCell.CELL_TYPE_FORMULA:
			targetCell.setCellFormula(sourceCell.getCellFormula());
			break;
		default:
			break;
		}
	}
	
	/**
	 * 功能：拷贝comment
	 * @param targetCell
	 * @param sourceCell
	 * @param targetPatriarch
	 */
	public static void copyComment(HSSFCell targetCell,HSSFCell sourceCell,HSSFPatriarch targetPatriarch)throws Exception{
		if(targetCell == null || sourceCell == null || targetPatriarch == null){
			throw new IllegalArgumentException("调用PoiUtil.copyCommentr()方法时，targetCell、sourceCell、targetPatriarch都不能为空，故抛出该异常！");
		}
		
		//处理单元格注释
		HSSFComment comment = sourceCell.getCellComment();
		if(comment != null){
			HSSFComment newComment = targetPatriarch.createComment(new HSSFClientAnchor());
			newComment.setAuthor(comment.getAuthor());
			newComment.setColumn(comment.getColumn());
			newComment.setFillColor(comment.getFillColor());
			newComment.setHorizontalAlignment(comment.getHorizontalAlignment());
			newComment.setLineStyle(comment.getLineStyle());
			newComment.setLineStyleColor(comment.getLineStyleColor());
			newComment.setLineWidth(comment.getLineWidth());
			newComment.setMarginBottom(comment.getMarginBottom());
			newComment.setMarginLeft(comment.getMarginLeft());
			newComment.setMarginTop(comment.getMarginTop());
			newComment.setMarginRight(comment.getMarginRight());
			newComment.setNoFill(comment.isNoFill());
			newComment.setRow(comment.getRow());
			newComment.setShapeType(comment.getShapeType());
			newComment.setString(comment.getString());
			newComment.setVerticalAlignment(comment.getVerticalAlignment());
			newComment.setVisible(comment.isVisible());
			targetCell.setCellComment(newComment);
		}
	}
	
	/**
	 * 功能：复制原有sheet的合并单元格到新建立的sheet
	 * 
	 * @param sheetCreat
	 * @param sourceSheet
	 */
	public static void mergerRegion(HSSFSheet targetSheet, HSSFSheet sourceSheet)throws Exception {
		if(targetSheet == null || sourceSheet == null){
			throw new IllegalArgumentException("调用PoiUtil.mergerRegion()方法时，targetSheet或者sourceSheet不能为空，故抛出该异常！");
		}
		
		for (int i = 0; i < sourceSheet.getNumMergedRegions(); i++) {
			CellRangeAddress oldRange = sourceSheet.getMergedRegion(i);
			CellRangeAddress newRange = new CellRangeAddress(
					oldRange.getFirstRow(), oldRange.getLastRow(),
					oldRange.getFirstColumn(), oldRange.getLastColumn());
			targetSheet.addMergedRegion(newRange);
		}
	}

	/**
	 * 功能：从新定义HSSFColor.YELLOW的色值
	 * 
	 * @param workbook
	 * @return
	 */
	public static HSSFColor setMForeColor(HSSFWorkbook workbook) {
		HSSFPalette palette = workbook.getCustomPalette();
		HSSFColor hssfColor = null;
		// byte[] rgb = { (byte) 221, (byte) 241, (byte) 255 };
		// try {
			// hssfColor = palette.findColor(rgb[0], rgb[1], rgb[2]);
			// if (hssfColor == null) {
				// palette.setColorAtIndex(HSSFColor.YELLOW.index, rgb[0], rgb[1],
						// rgb[2]);
				// hssfColor = palette.getColor(HSSFColor.YELLOW.index);
			// }
		// } catch (Exception e) {
			// e.printStackTrace();
		// }
		// return hssfColor;
	// }
	/**
	 * 功能：从新定义HSSFColor.PINK的色值
	 * 
	 * @param workbook
	 * @return
	 */
	public static HSSFColor setMBorderColor(HSSFWorkbook workbook) {
		HSSFPalette palette = workbook.getCustomPalette();
		HSSFColor hssfColor = null;
		byte[] rgb = { (byte) 0, (byte) 128, (byte) 192 };
		try {
			hssfColor = palette.findColor(rgb[0], rgb[1], rgb[2]);
			if (hssfColor == null) {
				palette.setColorAtIndex(HSSFColor.PINK.index, rgb[0], rgb[1],
						rgb[2]);
				hssfColor = palette.getColor(HSSFColor.PINK.index);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return hssfColor;
	}
}

关于工具类的使用，能够简单的调用copySheet方法完成sheet的复制。

注意：整理该工具类用到的poi版本是 3.2-FINAL-20081019，jdk的版本是1.4