java excel文件转html

实现方式一

1、所需的依赖

maven文件如下：

<dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>4.1.2</version>
</dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>4.1.2</version>
</dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.11.0</version>
</dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-compress</artifactId><version>1.18</version>
</dependency><dependency><groupId>org.apache.xmlbeans</groupId><artifactId>xmlbeans</artifactId><version>3.1.0</version>
</dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-collections4</artifactId><version>4.4</version>
</dependency><dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml-schemas</artifactId><version>4.1.2</version>
</dependency><dependency><groupId>org.apache.commons</groupId><artifactId>commons-compress</artifactId><version>1.21</version>
</dependency>

2、工具类

import org.apache.commons.io.FileUtils;
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.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFColor;
import org.apache.poi.xssf.usermodel.XSSFFont;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;import java.io.*;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.*;public class Excel2HtmlUtil {/**** @param filePath    excel源文件文件的路径* @param htmlPositon 生成的html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* @throws Exception**/public static String readExcelToHtml(String filePath, String htmlPositon, boolean isWithStyle,String type,String attname) throws Exception {InputStream is = null;String htmlExcel = null;Map<String,String> stylemap = new HashMap<String,String>();try {if("csv".equalsIgnoreCase(type)) {htmlExcel = getCSVInfo(filePath,htmlPositon);writeFile1(htmlExcel, htmlPositon,stylemap,attname);}else {File sourcefile = new File(filePath);is = new FileInputStream(sourcefile);Workbook wb = WorkbookFactory.create(is);if (wb instanceof XSSFWorkbook) { // 03版excel处理方法XSSFWorkbook xWb = (XSSFWorkbook) wb;htmlExcel = getExcelInfo(xWb, isWithStyle,stylemap);} else if (wb instanceof HSSFWorkbook) { // 07及10版以后的excel处理方法HSSFWorkbook hWb = (HSSFWorkbook) wb;htmlExcel = getExcelInfo(hWb, isWithStyle,stylemap);}writeFile(htmlExcel, htmlPositon,stylemap,attname);}} catch (Exception e) {System.out.println("文件被损坏或不能打开，无法预览");//throw new Exception("文件被损坏或不能打开，无法预览");} finally {try {if(is!=null)is.close();} catch (IOException e) {e.printStackTrace();}}return htmlPositon;}private static void getcscvvalue(BufferedReader reader,List col,String oldvalue,List list) {String line = null;try {while((line=reader.readLine())!=null){String[] item = line.split(",",-1);boolean isbreak = false;for(int i=0;i<item.length;i++) {String value = item[i];if(value.endsWith("\"")) {value = oldvalue+value;col.add(value);}else if(item.length==1) {value = oldvalue+value;getcscvvalue(reader,col,value,list);isbreak = true;}else if(value.startsWith("\"")){getcscvvalue(reader,col,value,list);isbreak = true;}else {col.add(value);}}if(!isbreak) {list.add(col);col = new ArrayList();}}} catch (IOException e) {}}private static String getCSVInfo(String filePath,String htmlPositon) {StringBuffer sb = new StringBuffer();DataInputStream in = null;try {in=new DataInputStream(new FileInputStream(filePath));BufferedReader reader=new BufferedReader(new InputStreamReader(in));//reader.readLine();String line = null;List list = new ArrayList();while((line=reader.readLine())!=null){String[] item = line.split(",");List col = new ArrayList();for(int i=0;i<item.length;i++) {String value = item[i];if(value.startsWith("\"")) {getcscvvalue(reader,col,value,list);}else {col.add(value);}}list.add(col);}sb.append("<table>");for(int i=0;i<list.size();i++) {List col = (List) list.get(i);if(col==null||col.size()==0) {sb.append("<tr><td ></td></tr>");}sb.append("<tr>");for(int j=0;j<col.size();j++) {String value = (String) col.get(j);if (value == null||"".equals(value)) {sb.append("<td> </td>");continue;}else {sb.append("<td>"+value+"</td>");}}sb.append("</tr>");}sb.append("</table>");} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {in.close();} catch (IOException e) {e.printStackTrace();}}return sb.toString();}//读取excel文件，返回转换后的html字符串private static String getExcelInfo(Workbook wb, boolean isWithStyle, Map<String,String> stylemap) {StringBuffer sb = new StringBuffer();StringBuffer ulsb = new StringBuffer();ulsb.append("<ul>");int num = wb.getNumberOfSheets();//遍历excel文件里的每一个sheetfor(int i=0;i<num;i++) {Sheet sheet = wb.getSheetAt(i);// 获取第i个Sheet的内容String sheetName = sheet.getSheetName();if(i==0) {ulsb.append("<li id='li_"+i+"' class='cur' οnclick='changetab("+i+")'>"+sheetName+"</li>");}else {ulsb.append("<li id='li_"+i+"' οnclick='changetab("+i+")'>"+sheetName+"</li>");}int lastRowNum = sheet.getLastRowNum();Map<String, String> map[] = getRowSpanColSpanMap(sheet);Map<String, String> map1[] = getRowSpanColSpanMap(sheet);sb.append("<table id='table_"+i+"' ");if(i==0) {sb.append("class='block'");}sb.append(">");Row row = null; // 兼容Cell cell = null; // 兼容int maxRowNum = 0;int maxColNum = 0;//遍历每一行for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {row = sheet.getRow(rowNum);if (row == null) {continue;}int lastColNum = row.getLastCellNum();for (int colNum = 0; colNum < lastColNum; colNum++) {cell = row.getCell(colNum);if (cell == null) { // 特殊情况 空白的单元格会返回nullcontinue;}String stringValue = getCellValue1(cell);if (map1[0].containsKey(rowNum + "," + colNum)) {map1[0].remove(rowNum + "," + colNum);if(maxRowNum<rowNum) {maxRowNum = rowNum;}if(maxColNum<colNum) {maxColNum = colNum;}} else if (map1[1].containsKey(rowNum + "," + colNum)) {map1[1].remove(rowNum + "," + colNum);if(maxRowNum<rowNum) {maxRowNum = rowNum;}if(maxColNum<colNum) {maxColNum = colNum;}continue;}if (stringValue == null || "".equals(stringValue.trim())) {continue;}else {if(maxRowNum<rowNum) {maxRowNum = rowNum;}if(maxColNum<colNum) {maxColNum = colNum;}}}}for (int rowNum = sheet.getFirstRowNum(); rowNum <= maxRowNum; rowNum++) {row = sheet.getRow(rowNum);if (row == null) {sb.append("<tr><td ></td></tr>");continue;}sb.append("<tr>");int lastColNum = row.getLastCellNum();for (int colNum = 0; colNum <= maxColNum; colNum++) {cell = row.getCell(colNum);if (cell == null) { // 特殊情况 空白的单元格会返回nullsb.append("<td> </td>");continue;}String stringValue = getCellValue(cell);if (map[0].containsKey(rowNum + "," + colNum)) {String pointString = map[0].get(rowNum + "," + colNum);map[0].remove(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;sb.append("<td rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' ");} 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,stylemap);// 处理单元格样式}sb.append("><nobr>");//如果单元格为空要判断该单元格是不是通过其他单元格计算得到的if (stringValue == null || "".equals(stringValue.trim())) {FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();if (evaluator.evaluate(cell) != null) {//如果单元格的值是通过其他单元格计算来的，则通过单元格计算获取String cellnumber = evaluator.evaluate(cell).getNumberValue() + "";//如果单元格的值是小数，保留两位if (null != cellnumber && cellnumber.contains(".")) {String[] decimal = cellnumber.split("\\.");if (decimal[1].length() > 2) {int num1 = decimal[1].charAt(0) - '0';int num2 = decimal[1].charAt(1) - '0';int num3 = decimal[1].charAt(2) - '0';if (num3 == 9) {num2 = 0;} else if (num3 >= 5) {num2 = num2 + 1;}cellnumber = decimal[0] + "." + num1 + num2;}}stringValue = cellnumber;}sb.append(stringValue.replace(String.valueOf((char) 160), " "));} 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("</nobr></td>");}sb.append("</tr>");}sb.append("</table>");}ulsb.append("</ul>");return ulsb.toString()+sb.toString();}private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {Map<String, String> map0 = new HashMap<String, String>();Map<String, String> map1 = new HashMap<String, String>();int mergedNum = sheet.getNumMergedRegions();CellRangeAddress range = 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();map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);// System.out.println(topRow + "," + topCol + "," + bottomRow + "," +// bottomCol);int tempRow = topRow;while (tempRow <= bottomRow) {int tempCol = topCol;while (tempCol <= bottomCol) {map1.put(tempRow + "," + tempCol, "");tempCol++;}tempRow++;}map1.remove(topRow + "," + topCol);}Map[] map = { map0, map1 };return map;}private static String getCellValue1(Cell cell) {String result = new String();switch (cell.getCellType()) {case NUMERIC:// 数字类型result = "1";break;case STRING:// String类型result = "1";break;case BLANK:result = "";break;default:result = "";break;}return result;}/*** 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 NUMERIC:// 数字类型if (DateUtil.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 STRING:// String类型result = cell.getRichStringCellValue().toString();break;case BLANK:result = "";break;default:result = "";break;}return result;}/*** 处理表格样式** @param wb* @param sheet* @param sb*/private static void dealExcelStyle(Workbook wb, Sheet sheet, Cell cell, StringBuffer sb,Map<String,String> stylemap) {CellStyle cellStyle = cell.getCellStyle();if (cellStyle != null) {HorizontalAlignment alignment = cellStyle.getAlignment();// sb.append("align='" + convertAlignToHtml(alignment) + "' ");//单元格内容的水平对齐方式VerticalAlignment verticalAlignment = cellStyle.getVerticalAlignment();String _style = "vertical-align:"+convertVerticalAlignToHtml(verticalAlignment)+";";if (wb instanceof XSSFWorkbook) {XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();//short boldWeight = xf.getBoldweight();short boldWeight = 400;String align = convertAlignToHtml(alignment);int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());_style +="font-weight:" + boldWeight + ";font-size: " + xf.getFontHeight() / 2 + "%;width:" + columnWidth + "px;text-align:" + align + ";";XSSFColor xc = xf.getXSSFColor();if (xc != null && !"".equals(xc)) {_style +="color:#" + xc.getARGBHex().substring(2) + ";";}XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();if (bgColor != null && !"".equals(bgColor)) {_style +="background-color:#" + bgColor.getARGBHex().substring(2) + ";"; // 背景颜色}_style +=getBorderStyle(0, cellStyle.getBorderTop().getCode(),((XSSFCellStyle) cellStyle).getTopBorderXSSFColor());_style +=getBorderStyle(1, cellStyle.getBorderRight().getCode(),((XSSFCellStyle) cellStyle).getRightBorderXSSFColor());_style +=getBorderStyle(2, cellStyle.getBorderBottom().getCode(),((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor());_style +=getBorderStyle(3, cellStyle.getBorderLeft().getCode(),((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor());} else if (wb instanceof HSSFWorkbook) {HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);short boldWeight = hf.getFontHeight();short fontColor = hf.getColor();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);String align = convertAlignToHtml(alignment);int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());_style +="font-weight:" + boldWeight + ";font-size: " + hf.getFontHeight() / 2 + "%;text-align:" + align + ";width:" + columnWidth + "px;";String fontColorStr = convertToStardColor(hc);if (fontColorStr != null && !"".equals(fontColorStr.trim())) {_style +="color:" + fontColorStr + ";"; // 字体颜色}short bgColor = cellStyle.getFillForegroundColor();hc = palette.getColor(bgColor);String bgColorStr = convertToStardColor(hc);if (bgColorStr != null && !"".equals(bgColorStr.trim())) {_style +="background-color:" + bgColorStr + ";"; // 背景颜色}_style +=getBorderStyle(palette, 0, cellStyle.getBorderTop().getCode(), cellStyle.getTopBorderColor());_style +=getBorderStyle(palette, 1, cellStyle.getBorderRight().getCode(), cellStyle.getRightBorderColor());_style +=getBorderStyle(palette, 3, cellStyle.getBorderLeft().getCode(), cellStyle.getLeftBorderColor());_style +=getBorderStyle(palette, 2, cellStyle.getBorderBottom().getCode(), cellStyle.getBottomBorderColor());}String calssname="";if(!stylemap.containsKey(_style)) {int count = stylemap.size();calssname = "td"+count;stylemap.put(_style, calssname);}else {calssname = stylemap.get(_style);}if(!"".equals(calssname)) {sb.append("class='"+calssname+"'");}}}/*** 单元格内容的水平对齐方式** @param alignment* @return*/private static String convertAlignToHtml(HorizontalAlignment alignment) {String align = "center";switch (alignment) {case LEFT:align = "left";break;case CENTER:align = "center";break;case 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(VerticalAlignment verticalAlignment) {String valign = "middle";switch (verticalAlignment) {case BOTTOM:valign = "bottom";break;case CENTER:valign = "middle";break;case TOP:valign = "top";break;default:break;}return valign;}private static String convertToStardColor(HSSFColor hc) {StringBuffer sb = new StringBuffer("");if (hc != null) {if (HSSFColor.HSSFColorPredefined.AUTOMATIC.getIndex() == 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 "";}/** @param content 生成的excel表格标签** @param htmlPath 生成的html文件地址*/private static void writeFile(String content, String htmlPath, Map<String,String> stylemap,String name) {File file2 = new File(htmlPath);StringBuilder sb = new StringBuilder();try {file2.createNewFile();// 创建文件sb.append("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"><title>"+name+"</title><style type=\"text/css\">");sb.append("ul{list-style: none;max-width: calc(100%);padding: 0px;margin: 0px;overflow-x: scroll;white-space: nowrap;} ul li{padding: 3px 5px;display: inline-block;border-right: 1px solid #768893;} ul li.cur{color: #F59C25;} table{border-collapse:collapse;display:none;width:100%;} table.block{display: block;}");for(Map.Entry<String, String> entry : stylemap.entrySet()){String mapKey = entry.getKey();String mapValue = entry.getValue();sb.append(" ."+mapValue+"{"+mapKey+"}");}sb.append("</style><script>");sb.append("function changetab(i){var block = document.getElementsByClassName(\"block\");block[0].className = block[0].className.replace(\"block\",\"\");var cur = document.getElementsByClassName(\"cur\");cur[0].className = cur[0].className.replace(\"cur\",\"\");var curli = document.getElementById(\"li_\"+i);curli.className += ' cur';var curtable = document.getElementById(\"table_\"+i);curtable.className=' block';}");sb.append("</script></head><body>");sb.append("<div>");sb.append(content);sb.append("</div>");sb.append("</body></html>");FileUtils.write(file2, sb.toString(),"UTF-8");} catch (IOException e) {e.printStackTrace();}}private static void writeFile1(String content, String htmlPath, Map<String,String> stylemap,String name) {File file2 = new File(htmlPath);StringBuilder sb = new StringBuilder();try {file2.createNewFile();// 创建文件sb.append("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\"><title>"+name+"</title><style type=\"text/css\">");sb.append("ul{list-style: none;max-width: calc(100%);padding: 0px;margin: 0px;overflow-x: scroll;white-space: nowrap;} ul li{padding: 3px 5px;display: inline-block;border-right: 1px solid #768893;} ul li.cur{color: #F59C25;} table{border-collapse:collapse;width:100%;} td{border: solid #000000 1px; min-width: 200px;}");sb.append("</style></head><body>");sb.append("<div>");sb.append(content);sb.append("</div>");sb.append("</body></html>");FileUtils.write(file2, sb.toString(),"UTF-8");} catch (IOException e) {e.printStackTrace();}}}

3、测试与效果

    public static void main(String[] args) {String sourcepath = "D:\\myExcel.xlsx";String htmlPositon =  "D:\\测试.html";Excel2HtmlUtil.readExcelToHtml(sourcepath, htmlPositon, true, "xlsx", "测试");}

效果如下：

实现方式二

通过Aspose.Cells 来实现 excel 转化为 html
Aspose.Cells官网

1.所需依赖

maven如下：

    <repositories><repository><id>AsposeJavaAPI</id><name>Aspose Java API</name><url>https://repository.aspose.com/repo/</url></repository></repositories><dependency><groupId>com.aspose</groupId><artifactId>aspose-cells</artifactId><version>22.4</version></dependency>

或者百度云下载jar
链接：https://pan.baidu.com/s/1lElXrUZ4seowJ1xSfAvPLA
提取码：wssh

2.去除水印工具类

因为评估版生成的html会有水印（官网水印说明），所以我写了个工具类来去除水印，工具类如下：


import java.io.*;
import java.util.ArrayList;
import java.util.List;public class ClearUtils {//获取文件夹下所有的html或htm文件路径public static List<String> getAllFilesPath(String path, List<String> list) {File file = new File(path);File[] tempList = file.listFiles();for (int i = 0; i < tempList.length; i++) {String filePath = tempList[i].toString();if (tempList[i].isFile()) {if (filePath.endsWith(".html") || filePath.endsWith(".htm")) {list.add(filePath);}} else {//如果是文件夹则递归getAllFilesPath(filePath, list);}}return list;}//清除所有sheet中的水印,返回第一个sheet的名称public static String clearWatermark(String htmlPath) throws IOException {String allhtmlDirPath = htmlPath.replace(".html", "_files");//获取所有的htm或html文件路径List<String> allFilePath = new ArrayList<>();allFilePath = ClearUtils.getAllFilesPath(allhtmlDirPath, allFilePath);//对每一个文件进行清除Evaluation Only.String firstSheet = "";for (String filePath : allFilePath) {//按行读取文件内容到linesFileInputStream file = new FileInputStream(filePath);InputStreamReader in = new InputStreamReader(file, "UTF-8");BufferedReader buf = new BufferedReader(in); //加入到缓存区String str = "";List<String> lines = new ArrayList<>();while ((str = buf.readLine()) != null) {//该行若含有Evaluation Only.则清除该行if (str.contains("Evaluation Only.")) {lines.add("");} else {lines.add(str);}}buf.close();file.close();//去除底部Evaluation Warning按钮if (filePath.endsWith("tabstrip.htm")) {firstSheet = clearEvaluation(lines);//替换为第一个sheet的名称，使得打开html时默认打开第一个sheetmodefy(htmlPath, firstSheet);}//将修改的文件内容lines再写回文件FileWriter f = new FileWriter(filePath, false); //文件读取为字符流，追加模式写数据BufferedWriter bufw = new BufferedWriter(f); //文件加入缓冲区for (String li : lines) {bufw.write(li); //向缓冲区写入数据bufw.write("\n"); //向缓冲区写入换行，或者采用buf.newLine();}bufw.close(); //关闭缓冲区并将信息写入文件f.close();}return firstSheet;}//清除多出的Evaluation Warning按钮public static String clearEvaluation(List<String> lines) {//查找Evaluation Warning出现在lines中的位置int eWPosition = -1;int lastTdPosition = -1;int i = 0;int firstSheetPosition = -1;for (String s : lines) {if (s.contains("Evaluation Warning")) {eWPosition = i;}if (s.contains("<td")) {lastTdPosition = i;}if (s.contains("<a href=\"") && firstSheetPosition == -1) {firstSheetPosition = i;}i++;}//修改Evaluation Warning样式将其隐藏if (eWPosition == lastTdPosition && eWPosition != -1) {String table = lines.get(eWPosition);int postion = table.lastIndexOf("<td");StringBuilder strBuild = new StringBuilder(table);strBuild.insert(postion + 4, " style=\"display: none;\"");table = String.valueOf(strBuild);lines.set(eWPosition, table);}//获取第一个sheet的名称String firstSheet = "";if (firstSheetPosition != -1) {String table = lines.get(firstSheetPosition);int start = table.indexOf("<a href=\"") + 9;int end = table.indexOf("\"", start);firstSheet = table.substring(start, end);}return firstSheet;}public static void modefy(String htmlPath, String firstSheetName) throws IOException {//按行读取文件内容到linesFileInputStream file = new FileInputStream(htmlPath);InputStreamReader in = new InputStreamReader(file, "UTF-8");BufferedReader buf = new BufferedReader(in); //加入到缓存区String str = "";List<String> lines = new ArrayList<>();boolean first = false;while ((str = buf.readLine()) != null) {//该行若含有Evaluation Only.则清除该行if (str.contains("<frame src=\"") && !first) {String[] sp = str.split("/");StringBuffer buffer = new StringBuffer(sp[1]);buffer.replace(0, sp[1].indexOf("\""), firstSheetName);String reStr = buffer.toString();lines.add(sp[0] + "/" + reStr);first = true;} else {lines.add(str);}}buf.close();file.close();//将修改的文件内容lines再写回文件FileWriter f = new FileWriter(htmlPath, false); //文件读取为字符流，追加模式写数据BufferedWriter bufw = new BufferedWriter(f); //文件加入缓冲区for (String li : lines) {bufw.write(li); //向缓冲区写入数据bufw.write("\n"); //向缓冲区写入换行，或者采用buf.newLine();}bufw.close(); //关闭缓冲区并将信息写入文件f.close();}
}

3.转化为html

public class MainServer {public static void main(String[] args) throws Exception {HtmlSaveOptions save = new HtmlSaveOptions(SaveFormat.HTML);//加载excel文件Workbook book = new Workbook("F:\\excels\\myExcel.xlsx");//转化为htmlbook.save("F:\\asposeHtml\\myExcelbb.html", save);//去除水印ClearUtils.clearWatermark("F:\\asposeHtml\\myExcelbb.html");}
}

4.转换效果

实现方式三

通过Spire.XLS 来实现 excel 转化为 html ,Spire.XLS是一个专业的 Java Excel API，使开发人员无需使用 Microsoft Office 即可创建、管理、操作、转换和打印 Excel 工作表。

（经过测试，当一个excel文件中含有多个sheet时，转化速度会变慢，所以比较推荐实现方式一来转换）

1、所需的依赖

通过下面任意一种方式下载spire.xls.jar

官网下载jar
百度云下载链接：https://pan.baidu.com/s/1wfna9JysI68ll_kbfUgRkA 提取码：bzhs
通过Maven下载，Maven的 pom.xml 中配置的存储库和依赖下载如下：
(关于免费版的说明)

<repositories><repository><id>com.e-iceblue</id><name>e-iceblue</name><url>https://repo.e-iceblue.com/nexus/content/groups/public/</url></repository>
</repositories><dependencies><dependency><groupId> e-iceblue </groupId><artifactId>spire.xls.free</artifactId><version>5.1.0</version></dependency>
</dependencies>

2、转换为html代码如下

import com.spire.xls.FileFormat;
import com.spire.xls.Workbook;
import com.spire.xls.Worksheet;
import com.spire.xls.core.spreadsheet.HTMLOptions;public class MainServer {public static void main(String[] args) {//加载excel文件Workbook wb = new Workbook();wb.loadFromFile("F:\\myExcel.xlsx");//将excel 转化为 html (如果excel里有多个sheet,会将多个sheet都转化)wb.saveToFile("F:\\ToHtml.html", FileFormat.HTML);//将excel 中的某一个 sheet 转化为 html ,这里get(0)即取第一个sheet转化为htmlWorksheet sheet = wb.getWorksheets().get(0);HTMLOptions options = new HTMLOptions();options.setImageEmbedded(true);sheet.saveToHtml("F:\\ToHtmlWithImageEmbeded.html", options);}}

3、效果

excel如下：

转化为html如下：

只转化第一个 sheet 为 html 效果如下：

其他相关文章：
Convert Excel Spreadsheets to HTML using the Apache POI library
java 解析word、excel转换为html、pdf