excel转换html

利用POI解析excel，转换成html,支持各种版本的excel、支持自定义样式、支持行列合并

需要用到的jar

public class Excel2Html {

/**
* 读取Excel并转换成html
* @param filePath 需要转换的excel文件路径
* @param htmlPostion 转换后html存放路径
* @param isWithStyle 是否需要样式
* @param theme 主题（1--深色背景；2--浅色背景）
* @return
*/
public static String readExcelToHtml(String filePath, String htmlPostion, boolean isWithStyle, int theme) {
InputStream is = null;
String htmlExcel = null;
try {
File sourceFile = new File(filePath);
is = new FileInputStream(sourceFile);
Workbook wb = WorkbookFactory.create(is);

if(wb instanceof HSSFWorkbook) {//03版excel处理方法
HSSFWorkbook hwb = (HSSFWorkbook)wb;
htmlExcel = Excel2Html.getExcelInfo(hwb,isWithStyle, theme);
} else {//07以及10版本以后的excel处理方法
XSSFWorkbook xwb = (XSSFWorkbook)wb;
htmlExcel = Excel2Html.getExcelInfo(xwb, isWithStyle, theme);
}
writeFile(htmlExcel, htmlPostion, theme);
} catch(Exception e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch(IOException e) {
e.printStackTrace();
}
}

return htmlExcel;
}

/**
*
* @param wb
* @param isWithStyle 是否需要样式
* @param theme 主题（1--深色背景；2--浅色背景）
* @return
*/
private static String getExcelInfo(Workbook wb, boolean isWithStyle, int theme) {
StringBuffer sb = new StringBuffer();
Sheet sheet = wb.getSheetAt(0);//获取第一个Sheet的内容
int lastRowNum = sheet.getLastRowNum();
Map<String, String> map[] = getRowSpanColSpanMap(sheet);
if(theme == 1) {
//深色背景样式
sb.append("<table style='border-collapse:collapse;background: #263B5C;' width='100%'>");
} else if(theme == 2) {
//浅色背景样式
sb.append("<table style='border-collapse:collapse;background: #fffff;' width='100%'>");
}
Row row = null;
Cell cell = null;
for(int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {
row = sheet.getRow(rowNum);
if(row == null) {
sb.append("<tr><td ><nobr> </nobr></td></tr>");
continue;
}
sb.append("<tr>");
int lastColNum = row.getLastCellNum();
for(int colNum = 0; colNum < lastColNum; colNum++) {
cell = row.getCell(colNum);
if(cell == 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);//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>");
return 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);
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;
}

/**
* 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 Cell.CELL_TYPE_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 {
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 Cell.CELL_TYPE_STRING://String类型
result = cell.getRichStringCellValue().toString();
break;
case Cell.CELL_TYPE_BLANK:
result = "";
break;
default:
result = "";
break;
}

return result;
}

/**
* 处理表格样式
* @param wb
* @param sheet
* @param cell
* @param sb
*/
private static void dealExcelStyle(Workbook wb, Sheet sheet, Cell cell, StringBuffer sb) {
CellStyle cellStyle = cell.getCellStyle();
if(cellStyle != null) {
short alignment = cellStyle.getAlignment();
sb.append("align='" + convertAlignToHtml(alignment) + "' ");//单元格内容的水平对齐方式
short verticalAlignment = cellStyle.getVerticalAlignment();
//sb.append("valign='"+ convertVerticalAlignToHtml(verticalAlignment)+ "' ");//单元格中内容的垂直排列方式
sb.append("valign='center' ");//单元格中内容的垂直排列方式
if(wb instanceof XSSFWorkbook) {
XSSFFont xf = ((XSSFCellStyle)cellStyle).getFont();
short boldWeight = xf.getBoldweight();
String align = convertAlignToHtml(alignment);
sb.append("style='");
sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
//sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体大小
sb.append("font-size: 14px;"); // 字体大小
int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
sb.append("width:" + columnWidth + "px;");
sb.append("text-align:" + align + ";");//表头排版样式
XSSFColor xc = xf.getXSSFColor();
if (xc != null && !"".equals(xc)) {
sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色
}
XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
if (bgColor != null && !"".equals(bgColor)) {
sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";"); // 背景颜色
}
sb.append(getBorderStyle(0,cellStyle.getBorderTop(), ((XSSFCellStyle) cellStyle).getTopBorderXSSFColor()));
sb.append(getBorderStyle(1,cellStyle.getBorderRight(), ((XSSFCellStyle) cellStyle).getRightBorderXSSFColor()));
sb.append(getBorderStyle(2,cellStyle.getBorderBottom(), ((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor()));
sb.append(getBorderStyle(3,cellStyle.getBorderLeft(), ((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor()));
} else if(wb instanceof HSSFWorkbook) {
HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);
short boldWeight = hf.getBoldweight();
short fontColor = hf.getColor();
sb.append("style='");
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);
sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
//sb.append("font-size: " + hf.getFontHeight() / 2 + "%;"); // 字体大小
sb.append("font-size: 14px;"); // 字体大小
String align = convertAlignToHtml(alignment);
sb.append("text-align:" + align + ";");//表头排版样式
String fontColorStr = convertToStardColor(hc);
if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
sb.append("color:" + fontColorStr + ";"); // 字体颜色
}
int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());
sb.append("width:" + columnWidth + "px;");
short bgColor = cellStyle.getFillForegroundColor();
hc = palette.getColor(bgColor);
String bgColorStr = convertToStardColor(hc);
if (bgColorStr != null && !"".equals(bgColorStr.trim())) {
sb.append("background-color:" + bgColorStr + ";"); // 背景颜色
}
sb.append( getBorderStyle(palette,0,cellStyle.getBorderTop(),cellStyle.getTopBorderColor()));
sb.append( getBorderStyle(palette,1,cellStyle.getBorderRight(),cellStyle.getRightBorderColor()));
sb.append( getBorderStyle(palette,3,cellStyle.getBorderLeft(),cellStyle.getLeftBorderColor()));
sb.append( getBorderStyle(palette,2,cellStyle.getBorderBottom(),cellStyle.getBottomBorderColor()));
}
sb.append("' ");
}
}

/**
* 单元格内容的水平对齐方式
* @param alignment
* @return
*/
private static String convertAlignToHtml(short alignment) {
String align = "center";
switch(alignment) {
case CellStyle.ALIGN_LEFT:
align = "left";
break;
case CellStyle.ALIGN_CENTER:
align = "center";
break;
case CellStyle.ALIGN_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(short verticalAlignment) {
String valign = "middle";
switch(verticalAlignment) {
case CellStyle.VERTICAL_BOTTOM:
valign = "bottom";
break;
case CellStyle.VERTICAL_CENTER:
valign = "center";
break;
case CellStyle.VERTICAL_TOP:
valign = "top";
break;
default:
break;
}

return valign;
}

private static String convertToStardColor(HSSFColor hc) {
StringBuffer sb = new StringBuffer("");
if(hc != null) {
if(HSSFColor.AUTOMATIC.index == 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] + "#5a6882 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] + "#5a6882 1px;";
}
if(xc != null && !"".equals(xc)) {
String borderColorStr = xc.getARGBHex();
borderColorStr=borderColorStr == null|| borderColorStr.length() < 1 ? "#000000" : borderColorStr.substring(2);
return bordesr[b] + borderStyles[s] + borderColorStr + " 1px;";
}

return "";
}

/**
* 将内容写进html
* @param content html内容
* @param htmlPath html路径
* @param theme 主题（1--深色背景；2--浅色背景）
*/
private static void writeFile(String content, String htmlPath, int theme) {
File file = new File(htmlPath);
StringBuilder sb = new StringBuilder();
try {
file.createNewFile();//创建文件
sb.append("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\"><title>Html Test</title></head>");
if(theme == 1) {
//深色背景样式
sb.append("<style>tr {height: 50px;} nobr {color: #fff;}</style>");
} else {
//浅色背景样式
sb.append("<style>tr {height: 50px;} nobr {color: #515f6d;}</style>");
}
sb.append("<body>");
sb.append("<div>");
sb.append(content);
sb.append("</div>");
sb.append("</body></html>");

PrintStream printStream = new PrintStream(new FileOutputStream(file));
printStream.println(sb.toString());//将字符串写入文件
} catch(IOException e) {
e.printStackTrace();
}
}

public static void main(String[] args) {
// TODO Auto-generated method stub
String str = "整车进口数量年度统计.xlsx";
System.out.println(str.split("\\.")[0]);
//Excel2Html.readExcelToHtml("E:/testFile/整车进口数量年度统计.xlsx", "E:/testFile/整车进口数量年度统计.html", true, 1);
//Excel2Html.readExcelToHtml("E:/testFile/商务办单量统计.xlsx", "E:/testFile/商务办单量统计.html", true, 1);
}
}