一、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>
二、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
* @param type 文件的后缀，比如: xlsx
* @param htmlTitle 生成的html文件中meta里的title
*/
public static String readExcelToHtml(String filePath, String htmlPositon, boolean isWithStyle, String type, String htmlTitle) {
InputStream is = null;
String htmlExcel = null;
Map<String, String> stylemap = new HashMap<String, String>();
try {
if ("csv".equalsIgnoreCase(type)) {
htmlExcel = getCSVInfo(filePath);
writeFile1(htmlExcel, htmlPositon, stylemap, htmlTitle);
} 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, htmlTitle);
}
} 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) {
StringBuffer sb = new StringBuffer();
DataInputStream in = null;
try {
in = new DataInputStream(new FileInputStream(filePath));
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
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();
}
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();
for (int i = 0; i < num; i++) {
Sheet sheet = wb.getSheetAt(i);// 获取第一个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;
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 (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>");
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("</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 = "";
switch (cell.getCellType()) {
case 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 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();
}
}
}
三、测试
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：
注意：
如果单元格的值是靠公式计算出来的，那么生成的 html 里该单元格会为空白，所以上面生成的html里序号和其他几个单元格里的值是空白的
