参考 : https://www.cnblogs.com/mfrbuaa/p/5204461.html
maven 坐标
<!-- https://mvnrepository.com/artifact/net.sourceforge.jexcelapi/jxl -->
<dependency>
<groupId>net.sourceforge.jexcelapi</groupId>
<artifactId>jxl</artifactId>
<version>2.6.12</version>
</dependency>
import java.io.*;
import java.util.HashMap;
import java.util.Map;
import jxl.Cell;
import jxl.Range;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.CellFormat;
import jxl.format.Colour;
import jxl.format.VerticalAlignment;
/**
* 获取Excel文件转换为HTML后的字符串,仅仅支持后缀为xls的Excel(主调方法)
*/
public class ExcelTransformHtml {
public static void main(String[] args) throws Exception {
System.err.println(xlsToHtml("/Users/leyili/Desktop/poi/test.html", "/Users/leyili/Desktop/poi/test.xls", 1));
}
/**
* xls 转 html
* @param htmlPath 生成的 html 路径
* @param xlsPath xls 路径
* @param sheetNum 第 n 个工作表(从0开始)
* @return
* @throws Exception
*/
public static String xlsToHtml(String htmlPath, String xlsPath, int sheetNum) throws Exception {
BufferedWriter bw = new BufferedWriter(new FileWriter(htmlPath));
String str = getExcelInfo(new File(xlsPath), sheetNum);
str = "<html><head><meta charset=\"utf-8\"><title></title></head><body>" + str;
str += "</body></html>";
bw.write(str);
bw.close();
return htmlPath;
}
/**
* 获取Excel文件转换为HTML后的字符串,仅仅支持后缀为xls的Excel(主调方法)
*
* @param sourcefile <span style="font-family: Arial, Helvetica, sans-serif;"> </span>Excel文件
* @return 返回Excel转换后的HTML字符串
* @throws Exception
*/
public static String getExcelInfo(File sourcefile, int sheetNum) throws Exception {
StringBuffer sb = new StringBuffer();
InputStream is = new FileInputStream(sourcefile);
Workbook rwb = Workbook.getWorkbook(is);
Sheet sheet = rwb.getSheet(sheetNum);
int colnum = sheet.getColumns();
int rownum = sheet.getRows();
Map<String, String> map[] = getRowSpanColSpanMap(sheet);
sb.append("<table border='1' cellspacing='0'>");
for (int row = 0; row < rownum; row++) {
sb.append("<tr>");
for (int col = 0; col < colnum; col++) {
Cell cell = sheet.getCell(col, row);
String content = cell.getContents();
CellFormat cellFormat = cell.getCellFormat();
if (map[0].containsKey(row + "," + col)) {
String pointString = map[0].get(row + "," + col);
map[0].remove(row + "," + col);
int bottomeRow = Integer.valueOf(pointString.split(",")[0]);
int bottomeCol = Integer.valueOf(pointString.split(",")[1]);
int rowSpan = bottomeRow - row + 1;
int colSpan = bottomeCol - col + 1;
sb.append("<td rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' ");
} else if (map[1].containsKey(row + "," + col)) {
map[1].remove(row + "," + col);
continue;
} else {
sb.append("<td ");
}
if (cellFormat != null) {
Alignment alignment = cellFormat.getAlignment();
sb.append("align='" + convertToHtmlGrammer(alignment) + "' ");
VerticalAlignment verticalAlignment = cellFormat.getVerticalAlignment();
sb.append("valign='" + convertToHtmlGrammer(verticalAlignment) + "' ");
// sb.append("style='color:" + convertToHtmlGrammer(cellFormat.getFont().getColour()) + ";"); //
Colour bgcolour = cellFormat.getBackgroundColour();
// sb.append("background-color:" + convertToHtmlGrammer(bgcolour) + ";"); //
// Colour bottomColour = cellFormat.getBorderColour(Border.BOTTOM); //
// Colour leftColour = cellFormat.getBorderColour(Border.LEFT);
// Colour rightColour = cellFormat.getBorderColour(Border.RIGHT);
// Colour topColour = cellFormat.getBorderColour(Border.TOP);
// System.out.print("bottomColour:" +
// bottomColour.getDescription());
// System.out.print(" leftColour:" +
// leftColour.getDescription());
// System.out.print(" rightColour:" +
// rightColour.getDescription());
// System.out.println(" topColour:" +
// topColour.getDescription());
// sb.append("border-color:" + convertToHtmlGrammer(bottomColour) + ";"); //
sb.append("' ");
}
sb.append(">");
if (content == null || "".equals(content.trim())) {
sb.append(" ");
} else {
sb.append(content);
}
sb.append("</td>");
}
sb.append("</tr>");
}
sb.append("</table>");
rwb.close();
is.close();
return sb.toString();
}
@SuppressWarnings("unchecked")
private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {
Map<String, String> map0 = new HashMap<String, String>();
Map<String, String> map1 = new HashMap<String, String>();
Range[] range = sheet.getMergedCells();
for (int i = 0; i < range.length; i++) {
Cell topCell = range[i].getTopLeft();
Cell bottomCell = range[i].getBottomRight();
int topRow = topCell.getRow();
int topCol = topCell.getColumn();
int bottomRow = bottomCell.getRow();
int bottomCol = bottomCell.getColumn();
map0.put(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 convertToHtmlGrammer(Alignment alignment) {
String align = "left";
switch (alignment.getValue()) {
case 1:
align = "left";
break;
case 2:
align = "center";
break;
case 3:
align = "right";
break;
case 5:
align = "justify";
break;
default:
break;
}
return align;
}
private static String convertToHtmlGrammer(VerticalAlignment verticalAlignment) {
String valign = "middle";
switch (verticalAlignment.getValue()) {
case 1:
valign = "middle";
break;
case 2:
valign = "bottom";
break;
case 3:
valign = "top";
break;
default:
break;
}
return valign;
}
/*private static String convertToHtmlGrammer(Colour colour) {
StringBuffer sb = new StringBuffer("");
if (colour != null && !"default background".equalsIgnoreCase(colour.getDescription())) {
sb.append("#");
sb.append(fillWithZero(Integer.toHexString(colour.getDefaultRGB().getRed())));
sb.append(fillWithZero(Integer.toHexString(colour.getDefaultRGB().getGreen())));
sb.append(fillWithZero(Integer.toHexString(colour.getDefaultRGB().getBlue())));
}
return sb.toString();
}*/
private static String fillWithZero(String str) {
if (str != null && str.length() < 2) {
return "0" + str;
}
return str;
}
}