JAVA-读取excel转成html 将excel表格转换为HTML文件格式转成前端表格样式

文章目录

1、调用函数
2、excel转html工具类
3、html样式解析
- 3.1 加载图片-URL链接
- 3.2 设置图片大小
- 3.3 设置标题-底色&加粗
- 3.4 圆点样式
- 3.5 url链接显示为设置内容
- 3.6 表格 -- 一行三列
- 3.6 表格 -- 两行三列
- 3.7 段落
4、时间工具类

博客背景：JAVA项目，将Excel转换为HTML的便捷工具类。可快速上手使用~

1、调用函数

excelPositon为存放excel的位置；htmlPositon为将要存放html的位置。
可以直接设置位置为磁盘中指定位置；如下默认为项目运行的上一级目录

 public void excel2Html() {String excelPositon = "../test.xlsx";String htmlPositon =  "../test.html";//excel转html；src为excel位置，htmlPositon为存放html文件位置Excel2HtmlUtil.readExcelToHtml(excelPositon, htmlPositon, true, "xlsx", "test");}

2、excel转html工具类

创建相应工具类Excel2HtmlUtil
改编了一些表头、第一列的样式；还有链接时的样式。如无需可以在对应位置去掉即可~
调用函数readExcelToHtml()可直接使用转换~

//excel转html工具类
package com.xx.util;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.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;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>");ulsb.append("<h3 style=\"background-color:LightSkyBlue ;\">" + sheetName + "</h3>");}else {//sheet名字 加上了蓝色底色//ulsb.append("<li id='li_"+i+"' οnclick='changetab("+i+")'>"+sheetName+"</li>");ulsb.append("<h3 style=\"background-color:LightSkyBlue ;\">" + sheetName + "</h3>");}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 (stringValue.equals("")) { // 空字符串返空sb.append(stringValue.replace(String.valueOf((char) 160), " "));}String pattrenStr = "[a-zA-z]+://[^\\s]*";Pattern pattern = Pattern.compile(pattrenStr);Matcher matcher = pattern.matcher(stringValue);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;if(rowNum == 0){sb.append("<td style=\"background-color:WhiteSmoke;font-weight:bold;\",rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' ");}else{sb.append("<td rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' ");}} else if (map[1].containsKey(rowNum + "," + colNum)) {map[1].remove(rowNum + "," + colNum);continue;} else {if(rowNum == 0 || colNum == 0){//列表头加粗&底色sb.append("<td style=\"background-color:WhiteSmoke;font-weight:bold;\"");}else{sb.append("<td ");}}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) {//                    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 {//如果是链接则使用该语句if(matcher.matches()){sb.append("<a href=\""+ stringValue + "\">点击查看内容</a>");}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、html样式解析

3.1 加载图片-URL链接

src设置需要加载的图片地址，alt是未加载到链接内容时展示的提示语

<img src="http://www.baidu.com/images/xx.jpg" alt="暂未加载图像">

3.2 设置图片大小

可以直接按比例设置100%；也可以直接按100px等比例设置

width="图片宽度" height="图片高度"
width=100%

3.3 设置标题-底色&加粗

hX是标题设置；background-color设置底色；font-weight:bold是加粗

<h4 style="background-color:LightSkyBlue;font-weight:bold;">标题</h4>

3.4 圆点样式

设置为带圆点样式的语句

<li id='li_1' οnclick='changetab(1)'>第一张</li>

3.5 url链接显示为设置内容

不直接展示该链接，显示为“点击查看内容”可点击跳转
点击查看内容

3.6 表格 – 一行三列

<table border="1">
<tr><td>100</td><td>200</td><td>300</td>
</tr>
</table>

3.6 表格 – 两行三列

<table border="1">
<tr><td> 1 </td><td> 2 </td><td> 3 </td>
</tr>
<tr><td>400</td><td>500</td><td>600</td>
</tr>

3.7 段落

段落正文中的具体内容

<p>段落段落段落段落段落段落段落</p>

4、时间工具类

专供表格使用相关的时间工具类，解决格式转换的问题。

//DateUtil
public class DateUtil {public static boolean isCellDateFormatted(Cell cell){if (cell == null) {return false;}boolean bDate = false;double d = cell.getNumericCellValue();if (isValidExcelDate(d)) {CellStyle style = cell.getCellStyle();if (style == null) {return false;}int i = style.getDataFormat();String f = style.getDataFormatString();bDate = isADateFormat(i, f);}return bDate;}public static boolean isADateFormat(int formatIndex, String formatString){if (isInternalDateFormat(formatIndex)) {return true;}if ((formatString == null) || (formatString.length() == 0)) {return false;}String fs = formatString;//添加以支持汉字格式wingzingfs = fs.replaceAll("[\"|\']","").replaceAll("[年|月|日|时|分|秒|毫秒|微秒]", "");fs = fs.replaceAll("\\\\-", "-");fs = fs.replaceAll("\\\\,", ",");fs = fs.replaceAll("\\\\.", ".");fs = fs.replaceAll("\\\\ ", " ");fs = fs.replaceAll(";@", "");fs = fs.replaceAll("^\\[\\$\\-.*?\\]", "");fs = fs.replaceAll("^\\[[a-zA-Z]+\\]", "");return (fs.matches("^[yYmMdDhHsS\\-/,. :]+[ampAMP/]*$"));}public static boolean isInternalDateFormat(int format){switch (format) { case 14:case 15:case 16:case 17:case 18:case 19:case 20:case 21:case 22:case 45:case 46:case 47:return true;case 23:case 24:case 25:case 26:case 27:case 28:case 29:case 30:case 31:case 32:case 33:case 34:case 35:case 36:case 37:case 38:case 39:case 40:case 41:case 42:case 43:case 44: } return false;}public static boolean isValidExcelDate(double value){return (value > -4.940656458412465E-324D);}
}

参考：
https://www.runoob.com/html/html-colornames.html
https://www.cnblogs.com/mythz/p/14177739.html
https://blog.csdn.net/qq_33697094/article/details/122736603