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  • 使用poi将excel转换为html,适用本身有导出excel的而现在需要添加网页打印的功能


    PoiExcelToHtmlUtil.java

    
    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)
     * @author liang
     * @date 2016年5月5日 下午3:50:20
     * 2017年5月19日,张鹏:添加隐藏行的过滤,修改excelToHtml入口参数,保证逻辑的正确性
     * 2017年5月26日,张鹏:添加图片处理,当excel中包含图片时,先将图片保存到指定位置,后面在html代码中引用该图片,不同使用环境可修改保存位置,在web环境下,可指定到webapp下
     * 2017年5月27日,张鹏:针对合并单元格后又隐藏了首行(此时下面的行列虽然可以显示正确的数据,但是poi无法读取到对应的value)的特殊类型excel,进行合并代码的重构
     * 2017年5月27日,张鹏:边框全部使用黑色基本样式,解决合并后部分边框为灰色的问题;如果有特殊要求,可在dealStyle方法中解放原来的颜色获取方法
     * 2017年6月5日,张鹏:样式处理方法dealstyle中,修改width属性的获取方式,解决由于合并单元格只计算单独宽度时造成的宽度计算错误的问题,并将原有的宽度转换为了pt单位,原有的px方式存在错误
     * 2017年6月6日,张鹏:添加多sheet的excel转换方式,提供此类调用的一套接口
     */
    public class PoiExcelToHtmlUtil {
        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 void excelWriteToHtml(String realPath, final String saveName,final String suffix){
            System.out.println("*****excel转html 正在转换...*****");
            String excelFile=realPath + "\" + saveName + suffix;
            String htmlFile=realPath + "\" + saveName + ".html";
            File sourcefile = new File(excelFile);
            try {
                InputStream is = new FileInputStream(sourcefile);
                String content = readExcelToHtml(is,true);
                writeFile(content, htmlFile);
            } catch (Exception e) {
                e.printStackTrace();
            }
            System.out.println("*****excel转html 转换结束...*****");
        }    /**
         * 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;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 = row.getLastCellNum();
                int rowHeight = row.getHeight();
                if (row == null) {
                    sb.append("<tr><td >  </td></tr>");
                    continue;
                }else if(row.getZeroHeight()){
                    continue;
                }else if(rowHeight==0){
                    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)){
                        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);
    //                        System.out.println(rowNum + "," + colNum+"减少rows:"+map[2].get(rowNum + "," + colNum)+",剩余"+rowSpan+";当前值:"+stringValue);
                        }
                        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>");
            }
            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
         */
        @SuppressWarnings({ "unchecked", "rawtypes" })
        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("" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
                        }else{
                            int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
                            sb.append("" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
                        }
                    }else{
                        int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
                        sb.append("" + columnWidth/256*xf.getFontHeight()/20 + "pt;");
                    }
    
                    XSSFColor xc = xf.getXSSFColor();
                    if (xc != null && !"".equals(xc)) {
                        sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色
                    }
    
                    XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
                    if (bgColor != null && !"".equals(bgColor)) {
                        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("" + columnWidth/256*hf.getFontHeight()/20 + "pt;");
                        }else{
                            int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
                            sb.append("" + columnWidth/256*hf.getFontHeight()/20 + "pt;");
                        }
                    }else{
                        int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
                        sb.append("" + 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( getBorderStyle(palette,0,cellStyle.getBorderTop(),cellStyle.getTopBorderColor()));
    //                sb.append( getBorderStyle(palette,1,cellStyle.getBorderRight(),cellStyle.getRightBorderColor()));
    //                sb.append( getBorderStyle(palette,3,cellStyle.getBorderLeft(),cellStyle.getLeftBorderColor()));
    //                sb.append( getBorderStyle(palette,2,cellStyle.getBorderBottom(),cellStyle.getBottomBorderColor()));
                }
                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"};
    
        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;";
        }
    
        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 "";
        }
    
        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 (bw != null)
                        bw.close();
                    if (os != null)
                        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.close();
            }
        }
    
    } 
    
    
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  • 原文地址:https://www.cnblogs.com/lalalagq/p/10219368.html
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