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+package com.steerinfo.ftp.uploadfile.utils;
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+
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+import org.apache.poi.hssf.usermodel.*;
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+import org.apache.poi.hssf.util.HSSFColor;
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+import org.apache.poi.ss.usermodel.*;
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+import org.apache.poi.ss.util.CellRangeAddress;
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+import org.apache.poi.xssf.usermodel.XSSFCellStyle;
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+import org.apache.poi.xssf.usermodel.XSSFColor;
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+import org.apache.poi.xssf.usermodel.XSSFFont;
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+import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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+
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+import java.io.IOException;
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+import java.io.InputStream;
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+import java.text.DecimalFormat;
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+import java.text.SimpleDateFormat;
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+import java.util.Date;
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+import java.util.HashMap;
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+import java.util.Map;
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+
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+/**
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+ * POIExcelToHtml 文件转换:
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+ * @author generator
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+ * @version 1.0-SNAPSHORT 2021-08-09 18:06
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+ * 类描述
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+ * 修订历史:
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+ * 日期:2021-08-09
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+ * 作者:shadow
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+ * 参考:
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+ * 描述:Execl转HTML
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+ * @see null
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+ * @Copyright 湖南视拓信息技术股份有限公司. All rights reserved.
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+ */
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+public class POIExcelToHtml {
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+
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+ public static String excelToHtml(InputStream is) {
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+
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+ String htmlExcel = "预览文件失败";
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+ try {
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+ Workbook wb = WorkbookFactory.create(is);
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+ if (wb instanceof XSSFWorkbook) {
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+ XSSFWorkbook xWb = (XSSFWorkbook) wb;
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+ htmlExcel = POIExcelToHtml.getExcelInfo(xWb);
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+ } else if (wb instanceof HSSFWorkbook) {
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+ HSSFWorkbook hWb = (HSSFWorkbook) wb;
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+ htmlExcel = POIExcelToHtml.getExcelInfo(hWb);
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+ }
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ } finally {
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+ try {
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+ is.close();
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ return htmlExcel;
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+ }
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+
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+ private static String getExcelInfo(Workbook wb) {
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+ StringBuffer sb = new StringBuffer();
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+ int sheetCounts = wb.getNumberOfSheets();
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+ // sb.append("<!DOCTYPE html> <html> <head> <meta charset='utf-8'
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+ // /><title>HTML实例</title></head> ");
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+
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+ for (int i = 0; i < sheetCounts; i++) {
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+ Sheet sheet = wb.getSheetAt(i);// 获取第一个Sheet的内容
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+ int lastRowNum = sheet.getLastRowNum();
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+ Map<String, String> map[] = getRowSpanColSpanMap(sheet);
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+ // sb.append("<br><br>");
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+ sb.append(sheet.getSheetName());
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+ sb.append("<table style='border-collapse:collapse;' width='100%'>");
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+ Row row = null; // 兼容
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+ Cell cell = null; // 兼容
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+ for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {
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+ row = sheet.getRow(rowNum);
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+ if (row == null) {
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+ sb.append("<tr><td > </td></tr>");
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+ continue;
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+ }
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+ sb.append("<tr>");
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+ int lastColNum = row.getLastCellNum();
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+ for (int colNum = 0; colNum < lastColNum; colNum++) {
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+ cell = row.getCell(colNum);
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+ if (cell == null) { // 特殊情况 空白的单元格会返回null
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+ sb.append("<td> </td>");
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+ continue;
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+ }
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+
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+ String stringValue = getCellValue(cell);//````````````
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+ if (map[0].containsKey(rowNum + "," + colNum)) {
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+ String pointString = map[0].get(rowNum + "," + colNum);
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+ map[0].remove(rowNum + "," + colNum);
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+ int bottomeRow = Integer.valueOf(pointString.split(",")[0]);
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+ int bottomeCol = Integer.valueOf(pointString.split(",")[1]);
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+ int rowSpan = bottomeRow - rowNum + 1;
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+ int colSpan = bottomeCol - colNum + 1;
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+ sb.append("<td rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' ");
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+ } else if (map[1].containsKey(rowNum + "," + colNum)) {
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+ map[1].remove(rowNum + "," + colNum);
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+ continue;
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+ } else {
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+ sb.append("<td ");
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+ }
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+
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+ dealExcelStyle(wb, sheet, cell, sb);// 处理单元格样式
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+ sb.append(">");
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+ if (stringValue == null || "".equals(stringValue.trim())) {
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+ sb.append(" ");
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+ } else {
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+ // 将ascii码为160的空格转换为html下的空格( )
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+ sb.append(stringValue.replace(String.valueOf((char) 160), " "));
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+ }
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+ sb.append("</td>");
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+ }
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+ sb.append("</tr>");
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+ }
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+ sb.append("</table>");
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+ }
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+
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+ // sb.append("</body></html> ");
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+ return sb.toString();
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+ }
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+
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+ private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {
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+ Map<String, String> map0 = new HashMap<String, String>();
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+ Map<String, String> map1 = new HashMap<String, String>();
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+ int mergedNum = sheet.getNumMergedRegions();
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+ CellRangeAddress range = null;
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+ for (int i = 0; i < mergedNum; i++) {
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+ range = sheet.getMergedRegion(i);
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+ int topRow = range.getFirstRow();
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+ int topCol = range.getFirstColumn();
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+ int bottomRow = range.getLastRow();
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+ int bottomCol = range.getLastColumn();
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+ map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);
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+ // System.out.println(topRow + "," + topCol + "," + bottomRow + ","
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+ // + bottomCol);
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+ int tempRow = topRow;
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+ while (tempRow <= bottomRow) {
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+ int tempCol = topCol;
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+ while (tempCol <= bottomCol) {
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+ map1.put(tempRow + "," + tempCol, "");
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+ tempCol++;
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+ }
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+ tempRow++;
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+ }
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+ map1.remove(topRow + "," + topCol);
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+ }
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+ Map[] map = { map0, map1 };
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+ return map;
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+ }
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+
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+ /**
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+ * 200 * 获取表格单元格Cell内容 201 * @param cell 202 * @return 203
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+ */
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+ private static String getCellValue(Cell cell) {
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+ String result = new String();
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+ switch (cell.getCellType()) {
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+ case Cell.CELL_TYPE_NUMERIC:// 数字类型
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+ if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
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+ SimpleDateFormat sdf = null;
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+ if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("hh:mm")) {
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+ sdf = new SimpleDateFormat("HH:mm");
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+ } else if (cell.getCellStyle().getDataFormat() == HSSFDataFormat
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+ .getBuiltinFormat("yyyy-MM-dd HH:mm:ss")) {// 日期
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+ sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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+ } else {
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+ sdf = new SimpleDateFormat("yyyy-MM-dd");
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+ }
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+ Date date = cell.getDateCellValue();
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+ result = sdf.format(date);
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+ } else if (cell.getCellStyle().getDataFormat() == 58) {
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+ // 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)
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+ SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
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+ double value = cell.getNumericCellValue();
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+ Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);
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+ result = sdf.format(date);
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+ } else {
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+ double value = cell.getNumericCellValue();
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+ CellStyle style = cell.getCellStyle();
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+ DecimalFormat format = new DecimalFormat();
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+ String temp = style.getDataFormatString();
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+ // 单元格设置成常规
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+ if (temp.equals("General")) {
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+ format.applyPattern("#");
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+ }
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+ result = format.format(value);
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+ }
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+ break;
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+ case Cell.CELL_TYPE_STRING:// String类型
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+ result = cell.getRichStringCellValue().toString();
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+ break;
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+ case Cell.CELL_TYPE_BLANK:
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+ result = "";
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+ break;
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+ default:
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+ result = "";
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+ break;
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+ }
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+ return result;
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+ }
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+
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+ /**
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+ * 251 * 处理表格样式 252 * @param wb 253 * @param sheet 254 * @param cell 255
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+ * * @param sb 256
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+ */
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+ private static void dealExcelStyle(Workbook wb, Sheet sheet, Cell cell, StringBuffer sb) {
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+
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+ CellStyle cellStyle = cell.getCellStyle();
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+ if (cellStyle != null) {
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+ //short alignment = cellStyle.getAlignment();旧写法获取枚举数字;新写法获取枚举
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+
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+ sb.append("align='" + convertAlignToHtml(cellStyle.getAlignmentEnum()) + "' ");// 单元格内容的水平对齐方式
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+ //short verticalAlignment = cellStyle.getVerticalAlignment();
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+ //short verticalAlignment = cellStyle.getVerticalAlignmentEnum().getCode();
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+ sb.append("valign='" + convertVerticalAlignToHtml(cellStyle.getVerticalAlignmentEnum()) + "' ");// 单元格中内容的垂直排列方式
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+
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+ if (wb instanceof XSSFWorkbook) {
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+ XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();
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+ Boolean boldWeight = xf.getBold();
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+ //short boldWeight = xf.getBoldweight();
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+ String fontfamily = xf.getFontName();
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+ int underline = xf.getUnderline();
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+ boolean Italic = xf.getItalic();
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+
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+ sb.append("style='");
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+ if (underline >= 1) {
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+ sb.append("text-decoration:underline;"); // 字体型号
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+ }
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+ if (Italic) {
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+ sb.append("font-style: italic;"); // 字体型号
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+ }
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+ sb.append("font-family:" + fontfamily + ";"); // 字体型号
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+ sb.append("font-weight:" + (boldWeight ? "bold" : "100") + ";"); // 字体加粗
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+ sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体大小
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+ int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());
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+ sb.append("width:" + columnWidth + "px;");
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+
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+ XSSFColor xc = xf.getXSSFColor();
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+ if (xc != null && !"".equals(xc)) {
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+ sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色
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+ }
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+
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+ XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
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+ if (bgColor != null && !"".equals(bgColor)) {
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+ sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";"); // 背景颜色
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+ }
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+ sb.append(getBorderStyle(0, cellStyle.getBorderTop(),
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+ ((XSSFCellStyle) cellStyle).getTopBorderXSSFColor()));
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+ sb.append(getBorderStyle(1, cellStyle.getBorderRight(),
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+ ((XSSFCellStyle) cellStyle).getRightBorderXSSFColor()));
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+ sb.append(getBorderStyle(2, cellStyle.getBorderBottom(),
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+ ((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor()));
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+ sb.append(getBorderStyle(3, cellStyle.getBorderLeft(),
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+ ((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor()));
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+
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+ } else if (wb instanceof HSSFWorkbook) {
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+
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+ HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);
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+ short fontColor = hf.getColor();
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+ Boolean boldWeight = hf.getBold();
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+ //short boldWeight = hf.getBoldweight();
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+ String fontfamily = hf.getFontName();
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+ int underline = hf.getUnderline();
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+ boolean Italic = hf.getItalic();
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+
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+ sb.append("style='");
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+ if (underline >= 1) {
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+ // 字体型号
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+ sb.append("text-decoration:underline;");
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+ }
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+ if (Italic) {
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+ // 字体型号
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+ sb.append("font-style: italic;");
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+ }
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+ // 类HSSFPalette用于求的颜色的国际标准形式
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+ HSSFPalette palette = ((HSSFWorkbook) wb).getCustomPalette();
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+ HSSFColor hc = palette.getColor(fontColor);
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+ // 字体加粗
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+ sb.append("font-weight:" + (boldWeight ? "bold" : "100") + ";");
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+ // 字体型号
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+ sb.append("font-family:" + fontfamily + ";");
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+ // 字体大小
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+ sb.append("font-size: " + hf.getFontHeight() / 2 + "%;");
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+ String fontColorStr = convertToStardColor(hc);
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+ // 字体颜色
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+ if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
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+ sb.append("color:" + fontColorStr + ";");
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+ }
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+ int columnWidth = sheet.getColumnWidth(cell.getColumnIndex());
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+ sb.append("width:" + columnWidth + "px;");
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+ short bgColor = cellStyle.getFillForegroundColor();
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+ //short bgColor = cellStyle.getFillBackgroundColor();
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+ hc = palette.getColor(bgColor);
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+ String bgColorStr = convertToStardColor(hc);
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+ if (bgColorStr != null && !"".equals(bgColorStr.trim())) {
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+ // 背景颜色
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+ sb.append("background-color:" + bgColorStr + ";");
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+ }
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+ /**
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+ * 旧版本 cellStyle.getBorderTop()
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+ * 新版本 cellStyle.getBorderTopEnum()
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+ */
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+ sb.append(getBorderStyle(palette, 0, cellStyle.getBorderTop(), cellStyle.getTopBorderColor()));
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+ sb.append(getBorderStyle(palette, 1, cellStyle.getBorderRight(), cellStyle.getRightBorderColor()));
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+ sb.append(getBorderStyle(palette, 3, cellStyle.getBorderLeft(), cellStyle.getLeftBorderColor()));
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+ sb.append(getBorderStyle(palette, 2, cellStyle.getBorderBottom(), cellStyle.getBottomBorderColor()));
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+ }
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+
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+ sb.append("' ");
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+ }
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+ }
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+
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+ /**
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+ * 330 * 单元格内容的水平对齐方式 331 * @param alignment 332 * @return 333
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+ * @param alignment
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+ */
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+ private static String convertAlignToHtml( HorizontalAlignment alignment) {
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+
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+ String align = "left";
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+ /**
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+ * CellStyle.ALIGN_CENTER:旧写法
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+ * HorizontalAlignment.LEFT:新写法
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+ */
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+ switch (alignment) {
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+ case LEFT:
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+ align = "left";
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+ break;
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+ case CENTER:
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+ align = "center";
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+ break;
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+ case RIGHT:
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+ align = "right";
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+ break;
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+ default:
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+ break;
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+ }
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+ return align;
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+ }
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+
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+ /**
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+ * 354 * 单元格中内容的垂直排列方式 355 * @param verticalAlignment 356 * @return 357
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+ * @param verticalAlignment
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+ */
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+ private static String convertVerticalAlignToHtml(VerticalAlignment verticalAlignment) {
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+
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+ /**
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+ * 旧写法CellStyle.VERTICAL_BOTTOM:
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+ * 新写法VerticalAlignment.BOTTOM:
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+ */
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+ String valign = "middle";
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+ switch (verticalAlignment) {
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+ case BOTTOM:
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+ valign = "bottom";
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+ break;
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+ case CENTER:
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+ valign = "center";
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+ break;
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+ case TOP:
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+ valign = "top";
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+ break;
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+ default:
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+ break;
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+ }
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+ return valign;
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+ }
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+
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+ private static String convertToStardColor(HSSFColor hc) {
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+
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+ /**
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+ * 颜色定义变化
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+ * 旧版本 : HSSFColor.BLACK.index
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+ * 新版本 : IndexedColors.BLACK.index
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+ */
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+ StringBuffer sb = new StringBuffer("");
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+ if (hc != null) {
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+ if (IndexedColors.AUTOMATIC.index == hc.getIndex()) {
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+ return null;
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+ }
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+ sb.append("#");
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+ for (int i = 0; i < hc.getTriplet().length; i++) {
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+ sb.append(fillWithZero(Integer.toHexString(hc.getTriplet()[i])));
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+ }
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+ }
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+
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+ return sb.toString();
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+ }
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+
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+ private static String fillWithZero(String str) {
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+ if (str != null && str.length() < 2) {
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+ return "0" + str;
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+ }
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+ return str;
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+ }
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+
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+ static String[] bordesr = { "border-top:", "border-right:", "border-bottom:", "border-left:" };
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+ static String[] borderStyles = { "solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid ", "solid ",
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+ "solid ", "solid", "solid", "solid", "solid", "solid" };
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+
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+ private static String getBorderStyle(HSSFPalette palette, int b, short s, short t) {
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+ if (s == 0) {
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+ return bordesr[b] + borderStyles[s] + "#d0d7e5 1px;";
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+ }
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+ String borderColorStr = convertToStardColor(palette.getColor(t));
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+ borderColorStr = borderColorStr == null || borderColorStr.length() < 1 ? "#000000" : borderColorStr;
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+ return bordesr[b] + borderStyles[s] + borderColorStr + " 1px;";
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+
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+ }
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+
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+ private static String getBorderStyle(int b, short s, XSSFColor xc) {
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+ if (s == 0) {
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+ return bordesr[b] + borderStyles[s] + "#d0d7e5 1px;";
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+ }
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+ if (xc != null && !"".equals(xc)) {
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+ // t.getARGBHex();
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+ String borderColorStr = xc.getARGBHex();
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+ borderColorStr = borderColorStr == null || borderColorStr.length() < 1 ? "#000000"
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+ : borderColorStr.substring(2);
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+ return bordesr[b] + borderStyles[s] + borderColorStr + " 1px;";
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+ }
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+ return "";
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+ }
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+
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+}
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