文章目录
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 block
e.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sheet
for(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null
continue;
}
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null
sb.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wingzing
fs = 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