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：
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！
望每天进步一点
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