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POI实现将excel表格转换成html代码

程序员文章站 2022-04-09 09:15:06
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POI转excel为html


        最近笔者在开发一个网站项目时,根据需求将用户上传的excel表格童年过java程序转换为html代码的同样格式呈现前端页面上,考虑到Apache成熟的Office文档处理工具POI的广受欢迎,我也在尝试通过POI实现这样的转换。

        应该来说POI提供了强大的excel表格处理的能力,不论是读还是写,都对开发人员提供了极大的便利。但在实际操作中由于不熟练,缺乏经验,难免会遇到问题,于是再次有必要记录一下,以加深印象,亦希给读者以些许启发。

        将excel表格转换为html的方法通过excel表格读操作,进行字符串的拼接,程序引用的jar包:

POI实现将excel表格转换成html代码

        具体过程请参照代码:

package pers.me.timlong.excel.extraction;

import org.apache.poi.POIXMLDocumentPart;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;

import java.io.*;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @ClassName: PoiExcelToHtmlUtil
 * @Description: TODO(poi转excel为html)
 */
public class POIReadExcel {
	private static  Map<String, Object> map[];

	/**
	 * 程序入口方法(读取指定位置的excel,将其转换成html形式的字符串,并保存成同名的html文件在相同的目录下,默认带样式)
	 * @param realPath 文件路径
	 * @param saveName 文件名称
	 * @param suffix 文件后缀
	 * @return <table>...</table> 字符串
	 */
	public static String excelWriteToHtml(String sourcePath){
		File sourceFile = new File(sourcePath);
		try {
			InputStream fis = new FileInputStream(sourceFile);
			String excelHtml = POIReadExcel.readExcelToHtml(fis, true);
			return excelHtml;
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return null;
		}
	}
	/**
	 * 程序入口方法(将指定路径的excel文件读取成字符串)
	 * @param filePath 文件的路径
	 * @param isWithStyle 是否需要表格样式 包含 字体 颜色 边框 对齐方式
	 * @return <table>...</table> 字符串
	 */
	public static String readExcelToHtml(String filePath , boolean isWithStyle){
		InputStream is = null;
		String htmlExcel = null;
		try {
			File sourcefile = new File(filePath);
			is = new FileInputStream(sourcefile);
			Workbook wb = WorkbookFactory.create(is);
			htmlExcel = readWorkbook(wb, isWithStyle);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				is.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return htmlExcel;
	}
	/**
	 * 程序入口方法(将指定路径的excel文件读取成字符串)
	 * @param is excel转换成的输入流
	 * @param isWithStyle 是否需要表格样式 包含 字体 颜色 边框 对齐方式
	 * @return <table>...</table> 字符串
	 */
	public static String readExcelToHtml(InputStream is,boolean isWithStyle){
		String htmlExcel = null;
		try {
			Workbook wb = WorkbookFactory.create(is);
			htmlExcel = readWorkbook(wb,isWithStyle);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				is.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return htmlExcel;
	}

	/**
	 * 根据excel的版本分配不同的读取方法进行处理
	 * @param wb
	 * @param isWithStyle
	 * @return
	 */
	private static String readWorkbook(Workbook wb,boolean isWithStyle){
		String htmlExcel = "";
		if (wb instanceof XSSFWorkbook) {
			XSSFWorkbook xWb = (XSSFWorkbook) wb;
			htmlExcel = getExcelInfo(xWb, isWithStyle);
		}else if(wb instanceof HSSFWorkbook){
			HSSFWorkbook hWb = (HSSFWorkbook) wb;
			htmlExcel = getExcelInfo(hWb, isWithStyle);
		}
		return htmlExcel;
	}

	/**
	 * 读取excel成string
	 * @param wb
	 * @param isWithStyle
	 * @return
	 */
	public static String getExcelInfo(Workbook wb, boolean isWithStyle){
		
		StringBuffer sb = new StringBuffer();
		Sheet sheet = wb.getSheetAt(0);//获取第一个Sheet的内容
		// map等待存储excel图片
		Map<String, PictureData> sheetIndexPicMap = getSheetPictrues(0, sheet, wb);
		//临时保存位置,正式环境根据部署环境存放其他位置
		try {
			if(sheetIndexPicMap != null)
				printImg(sheetIndexPicMap);
		} catch (IOException e) {
			e.printStackTrace();
		}

		//读取excel拼装html
		int lastRowNum = sheet.getLastRowNum();
		map = getRowSpanColSpanMap(sheet);
		sb.append("<table style='border-collapse:collapse;width:100%;'>");
		Row row = null;        //兼容
		Cell cell = null;    //兼容

		for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum ++) {
			if(rowNum > 1000) break;
			row = sheet.getRow(rowNum);

			int lastColNum = POIReadExcel.getColsOfTable(sheet)[0];
			int rowHeight = POIReadExcel.getColsOfTable(sheet)[1];
			
			if(null != row) {
				lastColNum = row.getLastCellNum();
				rowHeight = row.getHeight();
			}
			
			if (null == row) {
				sb.append("<tr><td >  </td></tr>");
				continue;
			}else if(row.getZeroHeight()){
				continue;
			}else if(0 == rowHeight){
				continue;     //针对jxl的隐藏行(此类隐藏行只是把高度设置为0,单getZeroHeight无法识别)
			}
			sb.append("<tr>");

			for (int colNum = 0; colNum < lastColNum; colNum ++) {
				if(sheet.isColumnHidden(colNum))	continue;
				String imageRowNum = "0_" + rowNum + "_" + colNum;
				String imageHtml = "";
				cell = row.getCell(colNum);
				if ((sheetIndexPicMap != null && !sheetIndexPicMap.containsKey(imageRowNum) || sheetIndexPicMap == null) && cell == null) {    //特殊情况 空白的单元格会返回null+//判断该单元格是否包含图片,为空时也可能包含图片
					sb.append("<td>  </td>");
					continue;
				}
				if(sheetIndexPicMap!=null && sheetIndexPicMap.containsKey(imageRowNum)){
					//待修改路径
					String imagePath = "D:\\pic" + imageRowNum + ".jpeg";
					
					imageHtml = "<img src='" + imagePath + "' style='height:" + rowHeight / 20 + "px;'>";
				}
				String stringValue = getCellValue(cell);
				if (map[0].containsKey(rowNum + "," + colNum)) {
					String pointString = (String)map[0].get(rowNum + "," + colNum);
					int bottomeRow = Integer.valueOf(pointString.split(",")[0]);
					int bottomeCol = Integer.valueOf(pointString.split(",")[1]);
					int rowSpan = bottomeRow - rowNum + 1;
					int colSpan = bottomeCol - colNum + 1;
					if(map[2].containsKey(rowNum + "," + colNum)){
						rowSpan = rowSpan - (Integer)map[2].get(rowNum + "," + colNum);
					}
					sb.append("<td rowspan= '" + rowSpan + "' colspan= '"+ colSpan + "' ");
					if(map.length > 3 && map[3].containsKey(rowNum + "," + colNum)){
						//此类数据首行被隐藏,value为空,需使用其他方式获取值
						stringValue = getMergedRegionValue(sheet, rowNum, colNum);
					}
				} else if (map[1].containsKey(rowNum + "," + colNum)) {
					map[1].remove(rowNum + "," + colNum);
					continue;
				} else {
					sb.append("<td ");
				}

				//判断是否需要样式
				if(isWithStyle){
					dealExcelStyle(wb, sheet, cell, sb);//处理单元格样式
				}

				sb.append(">");
				if(sheetIndexPicMap!=null && sheetIndexPicMap.containsKey(imageRowNum)) sb.append(imageHtml);
				if (stringValue == null || "".equals(stringValue.trim())) {
					sb.append("   ");
				} else {
					// 将ascii码为160的空格转换为html下的空格( )
					sb.append(stringValue.replace(String.valueOf((char) 160)," "));
				}
				sb.append("</td>");
			}
			sb.append("</tr>");
			continue;
		}
		sb.append("</table>");
		return sb.toString();
	}

	/**
	 * 分析excel表格,记录合并单元格相关的参数,用于之后html页面元素的合并操作
	 * @param sheet
	 * @return
	 */
	private static Map<String, Object>[] getRowSpanColSpanMap(Sheet sheet) {
		Map<String, String> map0 = new HashMap<String, String>();	//保存合并单元格的对应起始和截止单元格
		Map<String, String> map1 = new HashMap<String, String>();	//保存被合并的那些单元格
		Map<String, Integer> map2 = new HashMap<String, Integer>();	//记录被隐藏的单元格个数
		Map<String, String> map3 = new HashMap<String, String>();	//记录合并了单元格,但是合并的首行被隐藏的情况
		int mergedNum = sheet.getNumMergedRegions();
		CellRangeAddress range = null;
		Row row = null;
		for (int i = 0; i < mergedNum; i++) {
			range = sheet.getMergedRegion(i);
			int topRow = range.getFirstRow();
			int topCol = range.getFirstColumn();
			int bottomRow = range.getLastRow();
			int bottomCol = range.getLastColumn();
			/**
			 * 此类数据为合并了单元格的数据
			 * 1.处理隐藏(只处理行隐藏,列隐藏poi已经处理)
			 */
			if(topRow != bottomRow){
				int zeroRoleNum = 0;
				int tempRow = topRow;
				for(int j = topRow; j <= bottomRow; j ++){
					row = sheet.getRow(j);
					if(row.getZeroHeight() || row.getHeight() == 0){
						if(j == tempRow){
							//首行就进行隐藏,将rowTop向后移
							tempRow ++;
							continue;//由于top下移,后面计算rowSpan时会扣除移走的列,所以不必增加zeroRoleNum;
						}
						zeroRoleNum ++;
					}
				}
				if(tempRow != topRow){
					map3.put(tempRow + "," + topCol,topRow + "," + topCol);
					topRow = tempRow;
				}
				if(zeroRoleNum!=0) map2.put(topRow + "," + topCol, zeroRoleNum);
			}
			map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);
			int tempRow = topRow;
			while (tempRow <= bottomRow) {
				int tempCol = topCol;
				while (tempCol <= bottomCol) {
					map1.put(tempRow + "," + tempCol, topRow + "," + topCol);
					tempCol++;
				}
				tempRow++;
			}
			map1.remove(topRow + "," + topCol);
		}
		Map[] map = { map0, map1 ,map2,map3};
		System.err.println(map0);
		return map;
	}


	/**
	 * 获取合并单元格的值
	 * @param sheet
	 * @param row
	 * @param column
	 * @return
	 */
	public static 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 ;
	}
	/**
	 * 获取表格单元格Cell内容
	 * @param cell
	 * @return
	 */
	private static String getCellValue(Cell cell) {
		String result = new String();
		switch (cell.getCellType()) {
		case Cell.CELL_TYPE_NUMERIC:// 数字类型
			if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
				SimpleDateFormat sdf = null;
				if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) {
					sdf = new SimpleDateFormat("HH:mm");
				} else {// 日期
					sdf = new SimpleDateFormat("yyyy-MM-dd");
				}
				Date date = cell.getDateCellValue();
				result = sdf.format(date);
			} else if (cell.getCellStyle().getDataFormat() == 58) {
				// 处理自定义日期格式:m月d日(通过判断单元格的格式id解决,id的值是58)
				SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
				double value = cell.getNumericCellValue();
				Date date = org.apache.poi.ss.usermodel.DateUtil
						.getJavaDate(value);
				result = sdf.format(date);
			} else {
				double value = cell.getNumericCellValue();
				CellStyle style = cell.getCellStyle();
				DecimalFormat format = new DecimalFormat();
				String temp = style.getDataFormatString();
				// 单元格设置成常规
				if (temp.equals("General")) {
					format.applyPattern("#");
				}
				result = format.format(value);
			}
			break;
		case Cell.CELL_TYPE_STRING:// String类型
			result = cell.getRichStringCellValue().toString();
			break;
		case Cell.CELL_TYPE_BLANK:
			result = "";
			break;
		default:
			result = "";
			break;
		}
		return result;
	}

	/**
	 * 处理表格样式
	 * @param wb
	 * @param sheet
	 * @param cell
	 * @param sb
	 */
	private static void dealExcelStyle(Workbook wb, Sheet sheet, Cell cell, StringBuffer sb){
		CellStyle cellStyle = cell.getCellStyle();
		if (cellStyle != null) {
			short alignment = cellStyle.getAlignment();
			sb.append("align='" + convertAlignToHtml(alignment) + "' ");//单元格内容的水平对齐方式
			short verticalAlignment = cellStyle.getVerticalAlignment();
			sb.append("valign='"+ convertVerticalAlignToHtml(verticalAlignment)+ "' ");//单元格中内容的垂直排列方式

			if (wb instanceof XSSFWorkbook) {

				XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();
				short boldWeight = xf.getBoldweight();
				sb.append("style='");
				sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
				sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体大小

				int topRow = cell.getRowIndex(),topColumn = cell.getColumnIndex();
				if(map[0].containsKey(topRow+","+topColumn)){//该单元格为合并单元格,宽度需要获取所有单元格宽度后合并
					String value = (String)map[0].get(topRow+","+topColumn);
					String[] ary = value.split(",");
					int bottomColumn = Integer.parseInt(ary[1]);
					if(topColumn!=bottomColumn){//合并列,需要计算相应宽度
						int columnWidth = 0;
						for(int i=topColumn;i<=bottomColumn;i++){
							columnWidth += sheet.getColumnWidth(i);
						}
						sb.append("width:" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
					}else{
						int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
						sb.append("width:" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
					}
				}else{
					int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
					sb.append("width:" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
				}

				XSSFColor xc = xf.getXSSFColor();
				if (xc != null && !"".equals(xc.toString())) {
					sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色
				}

				XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
				if (bgColor != null && !"".equals(bgColor.toString())) {
					sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";"); // 背景颜色
				}
				sb.append("border:solid #000000 1px;");
				//                sb.append(getBorderStyle(0,cellStyle.getBorderTop(), ((XSSFCellStyle) cellStyle).getTopBorderXSSFColor()));
				//                sb.append(getBorderStyle(1,cellStyle.getBorderRight(), ((XSSFCellStyle) cellStyle).getRightBorderXSSFColor()));
				//                sb.append(getBorderStyle(2,cellStyle.getBorderBottom(), ((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor()));
				//                sb.append(getBorderStyle(3,cellStyle.getBorderLeft(), ((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor()));
			}else if(wb instanceof HSSFWorkbook){
				HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);
				short boldWeight = hf.getBoldweight();
				short fontColor = hf.getColor();
				sb.append("style='");

				HSSFPalette palette = ((HSSFWorkbook) wb).getCustomPalette(); // 类HSSFPalette用于求的颜色的国际标准形式
				HSSFColor hc = palette.getColor(fontColor);
				sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
				sb.append("font-size: " + hf.getFontHeight() / 2 + "%;"); // 字体大小
				String fontColorStr = convertToStardColor(hc);
				if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
					sb.append("color:" + fontColorStr + ";"); // 字体颜色
				}

				int topRow = cell.getRowIndex(),topColumn = cell.getColumnIndex();
				if(map[0].containsKey(topRow + "," + topColumn)){//该单元格为合并单元格,宽度需要获取所有单元格宽度后合并
					String value = (String)map[0].get(topRow + "," + topColumn);
					String[] ary = value.split(",");
					int bottomColumn = Integer.parseInt(ary[1]);
					if(topColumn != bottomColumn){//合并列,需要计算相应宽度
						int columnWidth = 0;
						for(int i = topColumn; i <= bottomColumn; i++){
							columnWidth += sheet.getColumnWidth(i);
						}
						sb.append("width:" + columnWidth / 256 * hf.getFontHeight() / 20 + "pt;");
					}else{
						int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
						sb.append("width:" + columnWidth / 256 * hf.getFontHeight() / 20 + "pt;");
					}
				}else{
					int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
					sb.append("width:" + columnWidth / 256 * hf.getFontHeight() / 20 + "pt;");
				}

				short bgColor = cellStyle.getFillForegroundColor();
				hc = palette.getColor(bgColor);
				String bgColorStr = convertToStardColor(hc);
				if (bgColorStr != null && !"".equals(bgColorStr.trim())) {
					sb.append("background-color:" + bgColorStr + ";"); 		// 背景颜色
				}
				sb.append("border:solid #000000 1px;");
			}
			sb.append("' ");
		}
	}

	/**
	 * 单元格内容的水平对齐方式
	 * @param alignment
	 * @return
	 */
	private static String convertAlignToHtml(short alignment) {
		String align = "left";
		switch (alignment) {
		case CellStyle.ALIGN_LEFT:
			align = "left";
			break;
		case CellStyle.ALIGN_CENTER:
			align = "center";
			break;
		case CellStyle.ALIGN_RIGHT:
			align = "right";
			break;
		default:
			break;
		}
		return align;
	}

	/**
	 * 单元格中内容的垂直排列方式
	 * @param verticalAlignment
	 * @return
	 */
	private static String convertVerticalAlignToHtml(short verticalAlignment) {
		String valign = "middle";
		switch (verticalAlignment) {
		case CellStyle.VERTICAL_BOTTOM:
			valign = "bottom";
			break;
		case CellStyle.VERTICAL_CENTER:
			valign = "center";
			break;
		case CellStyle.VERTICAL_TOP:
			valign = "top";
			break;
		default:
			break;
		}
		return valign;
	}

	private static String convertToStardColor(HSSFColor hc) {
		StringBuffer sb = new StringBuffer("");
		if (hc != null) {
			if (HSSFColor.AUTOMATIC.index == hc.getIndex()) {
				return null;
			}
			sb.append("#");
			for (int i = 0; i < hc.getTriplet().length; i ++) {
				sb.append(fillWithZero(Integer.toHexString(hc.getTriplet()[i])));
			}
		}
		return sb.toString();
	}

	private static String fillWithZero(String str) {
		if (str != null && str.length() < 2) {
			return "0" + str;
		}
		return str;
	}

	static String[] bordesr = {"border-top:", "border-right:", "border-bottom:", "border-left:"};
	static String[] borderStyles = {"solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid", "solid", "solid", "solid", "solid"};

	@SuppressWarnings("unused")
	private static  String getBorderStyle(HSSFPalette palette , int b, short s, short t){
		if(s == 0) return  bordesr[b] + borderStyles[s] + "#d0d7e5 1px;";
		String borderColorStr = convertToStardColor( palette.getColor(t));
		borderColorStr = borderColorStr == null || borderColorStr.length() < 1 ? "#000000" : borderColorStr;
		return bordesr[b] + borderStyles[s] + borderColorStr + " 1px;";
	}

	@SuppressWarnings("unused")
	private static  String getBorderStyle(int b, short s, XSSFColor xc){
		if(s == 0)return  bordesr[b] + borderStyles[s] + "#d0d7e5 1px;";
		if (xc != null && ! "".equals(xc)) {
			String borderColorStr = xc.getARGBHex();//t.getARGBHex();
			borderColorStr=borderColorStr == null || borderColorStr.length() < 1 ? "#000000" : borderColorStr.substring(2);
			return bordesr[b] + borderStyles[s]+borderColorStr+" 1px;";
		}
		return "";
	}

	@SuppressWarnings("unused")
	private static void writeFile(String content, String path) {
		OutputStream os = null;
		BufferedWriter bw = null;
		try {
			File file = new File(path);
			os = new FileOutputStream(file);
			bw = new BufferedWriter(new OutputStreamWriter(os,"GBK"));
			bw.write(content);
		} catch (FileNotFoundException fnfe) {
			fnfe.printStackTrace();
		} catch (IOException ioe) {
			ioe.printStackTrace();
		} finally {
			try {
				if (null != bw)
					bw.close();
				if (null != os)
					os.close();
			} catch (IOException ie) {
				ie.printStackTrace();
			}
		}
	}


	/**
	 * 获取Excel图片公共方法
	 * @param sheetNum 当前sheet编号
	 * @param sheet 当前sheet对象
	 * @param workbook 工作簿对象
	 * @return Map key:图片单元格索引(0_1_1)String,value:图片流PictureData
	 */
	public static Map<String, PictureData> getSheetPictrues(int sheetNum, Sheet sheet, Workbook workbook) {
		if(workbook instanceof  HSSFWorkbook){
			return getSheetPictrues03(sheetNum, (HSSFSheet) sheet, (HSSFWorkbook) workbook);
		}else if(workbook instanceof  XSSFWorkbook){
			return getSheetPictrues07(sheetNum, (XSSFSheet) sheet, (XSSFWorkbook) workbook);
		}else{
			return null;
		}
	}

	/**
	 * 获取Excel2003图片
	 * @param sheetNum 当前sheet编号
	 * @param sheet 当前sheet对象
	 * @param workbook 工作簿对象
	 * @return Map key:图片单元格索引(0_1_1)String,value:图片流PictureData
	 * @throws IOException
	 */
	private static Map<String, PictureData> getSheetPictrues03(int sheetNum,
			HSSFSheet sheet, HSSFWorkbook workbook) {

		Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();
		List<HSSFPictureData> pictures = workbook.getAllPictures();
		if (pictures.size() != 0) {
			for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) {
				HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor();
				shape.getLineWidth();
				if (shape instanceof HSSFPicture) {
					HSSFPicture pic = (HSSFPicture) shape;
					int pictureIndex = pic.getPictureIndex() - 1;
					HSSFPictureData picData = pictures.get(pictureIndex);
					String picIndex = String.valueOf(sheetNum) + "_"
							+ String.valueOf(anchor.getRow1()) + "_"
							+ String.valueOf(anchor.getCol1());
					sheetIndexPicMap.put(picIndex, picData);
				}
			}
			return sheetIndexPicMap;
		} else {
			return null;
		}
	}

	/**
	 * 获取Excel2007图片
	 * @param sheetNum 当前sheet编号
	 * @param sheet 当前sheet对象
	 * @param workbook 工作簿对象
	 * @return Map key:图片单元格索引(0_1_1)String,value:图片流PictureData
	 */
	private static Map<String, PictureData> getSheetPictrues07(int sheetNum,
			XSSFSheet sheet, XSSFWorkbook workbook) {
		Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>();

		for (POIXMLDocumentPart dr : sheet.getRelations()) {
			if (dr instanceof XSSFDrawing) {
				XSSFDrawing drawing = (XSSFDrawing) dr;
				List<XSSFShape> shapes = drawing.getShapes();
				for (XSSFShape shape : shapes) {
					XSSFPicture pic = (XSSFPicture) shape;
					XSSFClientAnchor anchor = pic.getPreferredSize();
					CTMarker ctMarker = anchor.getFrom();
					String picIndex = String.valueOf(sheetNum) + "_"
							+ ctMarker.getRow() + "_" + ctMarker.getCol();
					sheetIndexPicMap.put(picIndex, pic.getPictureData());
				}
			}
		}

		return sheetIndexPicMap;
	}

	public static void printImg(List<Map<String, PictureData>> sheetList) throws IOException {
		for (Map<String, PictureData> map : sheetList) {
			printImg(map);
		}
	}

	public static void printImg(Map<String, PictureData> map) throws IOException {
		Object key[] = map.keySet().toArray();
		for (int i = 0; i < map.size(); i++) {
			// 获取图片流
			PictureData pic = map.get(key[i]);
			// 获取图片索引
			String picName = key[i].toString();
			// 获取图片格式
			String ext = pic.suggestFileExtension();

			byte[] data = pic.getData();

			FileOutputStream out = new FileOutputStream("D:\\pic" + picName + "." + ext);
			out.write(data);
			out.flush();
			out.close();
		}
	}
	
	private static int[] getColsOfTable(Sheet sheet) {
		
		int[] data = {0, 0};
		for(int i = sheet.getFirstRowNum(); i < sheet.getLastRowNum(); i ++) {
			if(null != sheet.getRow(i)) {
				data[0] = sheet.getRow(i).getLastCellNum();
				data[1] = sheet.getRow(i).getHeight();
			}else 
				continue;
		}
		return data;
	}
} 

    程序仅供参考,如有疑问欢迎在评论去评论!

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