最近写了一个公式较复杂的报表，因梳理公式与后期的数据核对会比较耗费时间，因此采用了读取EXCEL模板，然后填写数据；最后读取最终文件生成页面的方法。现整理了将EXCEL转为HTML的方法。（本人在用的xlsx文件，颜色不支持灰色，建议使用其他背景色）
POI版本：3.17
3.8版本不支持countIfs函数
package com.tarena.kcrm.performance.util;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.Writer;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFFormulaEvaluator;
import org.apache.poi.hssf.usermodel.HSSFPalette;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.FormulaEvaluator;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
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.XSSFFormulaEvaluator;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
/**
* @功能描述 POI 读取 Excel 转 HTML 支持 03xls 和 07xlsx 版本 包含样式
*/
public class POIReadExcelToHtml {
/**
* 测试
*
* @param args
*/
public static void pdf2html(InputStream is, String dispath) {
String htmlExcel = null;
Writer wr = null;
try {
Workbook wb = WorkbookFactory.create(is);// 此WorkbookFactory在POI-3.10版本中使用需要添加dom4j
if (wb instanceof XSSFWorkbook) {
XSSFWorkbook xWb = (XSSFWorkbook) wb;
FormulaEvaluator eval = new XSSFFormulaEvaluator(xWb);
htmlExcel = POIReadExcelToHtml.getExcelInfo(eval,xWb, true);
} else if (wb instanceof HSSFWorkbook) {
HSSFWorkbook hWb = (HSSFWorkbook) wb;
FormulaEvaluator eval = new HSSFFormulaEvaluator(hWb);
htmlExcel = POIReadExcelToHtml.getExcelInfo(eval,hWb, true);
}
// HSSFWorkbook hWb = new HSSFWorkbook(is);
// htmlExcel = POIReadExcelToHtml.getExcelInfo(hWb, true);
File file = new File(dispath);
if (!file.exists()) {
file.createNewFile();
}
wr = new FileWriter(file);
wr.write(htmlExcel);
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (is != null) {
is.close();
}
if (wr != null) {
wr.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* 程序入口方法
*
* @param is
* 需要转成html的文件的输入流
* @param isWithStyle
* 是否需要表格样式 包含 字体 颜色 边框 对齐方式
* @return <table>
* ...
* </table>
* 字符串
*/
public static String readExcelToHtml(InputStream is, boolean isWithStyle) {
String htmlExcel = null;
try {
Workbook wb = WorkbookFactory.create(is);
if (wb instanceof XSSFWorkbook) {
XSSFWorkbook xWb = (XSSFWorkbook) wb;
FormulaEvaluator eval = new XSSFFormulaEvaluator(xWb);
htmlExcel = POIReadExcelToHtml.getExcelInfo(eval,xWb, isWithStyle);
} else if (wb instanceof HSSFWorkbook) {
HSSFWorkbook hWb = (HSSFWorkbook) wb;
FormulaEvaluator eval = new HSSFFormulaEvaluator(hWb);
htmlExcel = POIReadExcelToHtml.getExcelInfo(eval,hWb, isWithStyle);
}
} catch (Exception e) {
e.printStackTrace();
} finally {
/*try {
//is.close();
} catch (IOException e) {
e.printStackTrace();
}*/
}
return htmlExcel;
}
public static String getExcelInfo(FormulaEvaluator eval , Workbook wb, boolean isWithStyle) {
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);
sb.append("<table style='border-collapse:collapse;' width='1500px'>");
Row row = null; // 兼容
Cell cell = null; // 兼容
for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; 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 < lastColNum; 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(eval , 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(">");
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("</td>");
}
sb.append("</tr>");
}
sb.append("</table>");
return sb.toString();
}
@SuppressWarnings({ "unchecked", "rawtypes" })
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;
}
/**
* 获取表格单元格Cell内容
*
* @param cell
* @return
*/
public static String getCellValue(FormulaEvaluator eval,Cell cell) {
String result = new String();
switch (cell.getCellType()) {
case Cell.CELL_TYPE_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 Cell.CELL_TYPE_STRING:// String类型
result = cell.getRichStringCellValue().toString();
break;
case Cell.CELL_TYPE_BLANK:
result = "";
break;
case Cell.CELL_TYPE_FORMULA: //公式类型
// cell.getCellFormula();
DecimalFormat df = new DecimalFormat("#,###");
try {
//四舍五入取整
//System.out.println("行："+cell.getRowIndex() +"第"+cell.getColumnIndex() + "列："+cell.getCellFormula());
eval.evaluateFormulaCell(cell);
double value = new BigDecimal(cell.getNumericCellValue()).setScale(0, BigDecimal.ROUND_HALF_UP).doubleValue();
//千分位显示
result = String.valueOf(df.format(value));
} catch (IllegalStateException e) {
result = String.valueOf(cell.getRichStringCellValue());
}
//DecimalFormat df=new DecimalFormat("0");
//df.format(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
if (wb instanceof XSSFWorkbook) {
XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();
short boldWeight = 1;// xf.getBoldweight();
sb.append("style='");
sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体大小
int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());
sb.append("width:" + columnWidth + "px;");
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();
// System.out.println("************************************");
// System.out.println("BackgroundColorColor: "+cellStyle.getFillBackgroundColorColor());
// System.out.println("ForegroundColor: "+cellStyle.getFillForegroundColor());//0
// System.out.println("BackgroundColorColor: "+cellStyle.getFillBackgroundColorColor());
// System.out.println("ForegroundColorColor: "+cellStyle.getFillForegroundColorColor());
// String bgColorStr = bgColor.getARGBHex();
// System.out.println("bgColorStr: "+bgColorStr);
if (bgColor != null && !"".equals(bgColor)) {
sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";"); // 鑳屾櫙棰滆壊
}
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 = 1;// hf.getBoldweight();
short fontColor = hf.getColor();
sb.append("style='");
HSSFPalette palette = ((HSSFWorkbook) wb).getCustomPalette(); // 绫籋SSFPalette鐢ㄤ簬姹傜殑棰滆壊鐨勫浗闄呮爣鍑嗗舰寮�
HSSFColor hc = palette.getColor(fontColor);
sb.append("font-weight:" + boldWeight + ";"); // 瀛椾綋鍔犵矖
sb.append("font-size: " + hf.getFontHeight() / 2 + "%;"); // 瀛椾綋澶у皬
String fontColorStr = convertToStardColor(hc);
if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
sb.append("color:" + fontColorStr + ";"); // 瀛椾綋棰滆壊
}
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 + ";"); // 鑳屾櫙棰滆壊
}
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 = "left";
// 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] + "#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 "";
}
}