发布时间:2019-07-30作者:laosun阅读(1939)
POI Excel 转 HTML(兼容2003和2007),附带测试类
PoiExcelToHtml.java
其中的缺失类都不重要,自己修改下即可
import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.net.URL; import java.net.URLConnection; import java.text.DecimalFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; import java.util.Map.Entry; import javax.xml.transform.OutputKeys; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.apache.log4j.Logger; import org.apache.poi.hssf.usermodel.HSSFCellStyle; import org.apache.poi.hssf.usermodel.HSSFDataFormat; import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFFont; 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.openxml4j.exceptions.NotOfficeXmlFileException; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellStyle; 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.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 com.google.common.collect.Maps; import com.xxxx.common.constants.ResultConstants; import com.xxxx.common.utils.LogKit; import com.xxxx.pojos.Result; import com.jfinal.kit.JsonKit; /** * Excel 转 HTML * * @author sun */ public class PoiExcelToHtml { protected static final Logger LOG = Logger.getLogger(PoiExcelToHtml.class); 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" }; @SuppressWarnings("rawtypes") public static void main(String args[]) throws Exception { //============================================================转换远程excel============================================================ String url = "http://192.168.1.1/doc/raw/master/xxxx/xxxx.xlsx"; Map<String, String> map = Maps.newHashMap(); map.put("cookie", "_gitlab_session=3c0aa7d2ceb3725bf578eb47533e0191"); map.put("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8"); map.put("Accept-Encoding", "gzip, deflate, sdch"); map.put("Accept-Language", "zh-CN,zh;q=0.8"); map.put("Cache-Control", "max-age=0"); map.put("Connection", "keep-alive"); Result remoteResult = remoteExcelToHtml(url, map, true, true); if(ResultConstants.RESULT_CODE_SUCCESS.equals(remoteResult.getCode())) { //写入本地文件 String content = remoteResult.getData().toString(); org.apache.commons.io.FileUtils.writeStringToFile(new File("/Users/sun/Downloads/", "remoteIndex.html"), content, "utf-8"); } LOG.info(LogKit.append("远程excel转html", JsonKit.toJson(remoteResult))); //============================================================转换本地excel============================================================ //转换本地excel Result localResult = localExcelToHtml("/Users/sun/Downloads/import_template.xls", true, true); if(ResultConstants.RESULT_CODE_SUCCESS.equals(localResult.getCode())) { //写入本地文件 String content = localResult.getData().toString(); org.apache.commons.io.FileUtils.writeStringToFile(new File("/Users/sun/Downloads/localIndex.html"), content, "utf-8"); } LOG.info(LogKit.append("本地excel转html", JsonKit.toJson(localResult))); } /** * 读取远程excel * @param remoteUrl * @param headers * @param isWithStyle * @return */ @SuppressWarnings("rawtypes") public static Result remoteExcelToHtml(String remoteUrl, Map<String, String> headers, boolean isShowSheet, boolean isWithStyle) { Result result = new Result(); try { URLConnection conn = new URL(remoteUrl).openConnection(); conn.setConnectTimeout(10000);//默认链接超时10秒 conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded"); conn.setRequestProperty("User-Agent", "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36"); if (headers != null && !headers.isEmpty()) { for (Entry<String, String> entry : headers.entrySet()) { conn.setRequestProperty(entry.getKey(), entry.getValue()); } } InputStream is = conn.getInputStream(); result = excelToHtml(remoteUrl, is, isShowSheet, isWithStyle); return result; }catch (Exception e) { e.printStackTrace(); LOG.error(LogKit.append("远程读取excel", "出现异常", remoteUrl, e.getMessage())); result.setCode(ResultConstants.RESULT_CODE_FAILED); result.setMsg(e.getMessage()); return result; } } /** * 读取本地excel * @param filepath * @param isWithStyle * @return */ @SuppressWarnings("rawtypes") public static Result localExcelToHtml(String filepath, boolean isShowSheet, boolean isWithStyle) { Result result = new Result(); try { InputStream is = new FileInputStream(filepath); result = excelToHtml(filepath, is, isShowSheet, isWithStyle); return result; }catch (Exception e) { e.printStackTrace(); LOG.error(LogKit.append("本地读取excel", "出现异常", filepath, e.getMessage())); result.setCode(ResultConstants.RESULT_CODE_FAILED); result.setMsg(e.getMessage()); return result; } } /** * 将excel流转换成 html table * @param is * @param isWithStyle * @return */ @SuppressWarnings({ "rawtypes", "unchecked" }) private static Result excelToHtml(String file, InputStream is, boolean isShowSheet, boolean isWithStyle) { Result result = new Result(); Workbook workbook = null; try { long s = System.currentTimeMillis(); String suffix = file.substring(file.lastIndexOf(".")+1, file.length()); if("xlsx".equalsIgnoreCase(suffix)) {// 07 excel workbook = new XSSFWorkbook(is); }else if("xls".equalsIgnoreCase(suffix)) {// 03 excel workbook = new HSSFWorkbook(is); }else { //不支持此类型 result.setCode(ResultConstants.RESULT_CODE_FAILED); result.setMsg("不支持的文件类型"); return result; } StringBuffer sb = new StringBuffer(); Sheet sheet = workbook.getSheetAt(0);// 获取第一个Sheet的内容 Map<String, String> map[] = getRowSpanColSpanMap(sheet); int lastRowNum = sheet.getLastRowNum(); //转换处理方式 for (int numSheet = 0; numSheet < workbook.getNumberOfSheets(); numSheet++) { org.apache.poi.ss.usermodel.Sheet sheet1 = workbook.getSheetAt(numSheet); if (sheet1 == null) { continue; } if (numSheet != 0) { sb.append("<br><br>"); } if(isShowSheet) { sb.append("<div style='font-size: 25px;text-align: center;margin-bottom: 20px;font-weight: bold;text-decoration: underline;'>" + sheet1.getSheetName() + "</div>"); } sb.append("<table style='border-collapse:collapse;' width='100%'>"); Row row = null; Cell cell = null; for (int rowNum = sheet1.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) { row = sheet1.getRow(rowNum); if (row == null) { // sheet空间 continue; } boolean flag = false; StringBuffer rowHtml = new StringBuffer(); rowHtml.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 // rowHtml.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; rowHtml.append("<td rowspan= '" + rowSpan + "' colspan= '" + colSpan + "' "); } else if (map[1].containsKey(rowNum + "," + colNum)) { map[1].remove(rowNum + "," + colNum); continue; } else { rowHtml.append("<td "); } // 判断是否需要样式 if (isWithStyle) { dealExcelStyle(workbook, sheet1, cell, rowHtml);// 处理单元格样式 } rowHtml.append(">"); if (stringValue == null || "".equals(stringValue.trim())) { rowHtml.append(" "); } else { // 将ascii码为160的空格转换为html下的空格( ) rowHtml.append(stringValue.replace(String.valueOf((char) 160), " ")); flag = true; } rowHtml.append("</td>"); } rowHtml.append("</tr>"); if (flag) {//如果excel 行无数据,则不拼接tr sb.append(rowHtml); } } sb.append("</table>"); ByteArrayOutputStream outStream = new ByteArrayOutputStream(); DOMSource domSource = new DOMSource(); StreamResult streamResult = new StreamResult(outStream); TransformerFactory tf = TransformerFactory.newInstance(); Transformer serializer = tf.newTransformer(); serializer.setOutputProperty(OutputKeys.ENCODING, "utf-8"); serializer.setOutputProperty(OutputKeys.INDENT, "yes"); serializer.setOutputProperty(OutputKeys.METHOD, "html"); serializer.transform(domSource, streamResult); outStream.close(); } result.setData(sb.toString()); long e = System.currentTimeMillis(); LOG.info(LogKit.append("excel转HTML已完成", "共耗时 " + (e - s) + " 毫秒")); } catch (NotOfficeXmlFileException e) { e.printStackTrace(); LOG.error(LogKit.append("excel转html", "出现异常", e.getMessage())); result.setCode(ResultConstants.RESULT_CODE_FAILED); result.setMsg(e.getMessage()); return result; } catch (Exception e) { e.printStackTrace(); LOG.error(LogKit.append("excel转html", "出现异常", e.getMessage())); result.setCode(ResultConstants.RESULT_CODE_FAILED); result.setMsg(e.getMessage()); return result; } return result; } /** * 获取表格单元格Cell内容 * * @param cell * @return */ @SuppressWarnings("deprecation") 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 {// 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; default: result = ""; break; } return result; } /** * 处理表格样式 * @param wb * @param sheet * @param cell * @param sb */ @SuppressWarnings("deprecation") 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 = 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) { sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色 } XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor(); if (bgColor != null) { 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 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 */ @SuppressWarnings("deprecation") 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 */ @SuppressWarnings("deprecation") 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; } @SuppressWarnings("deprecation") 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; } 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) { String borderColorStr = xc.getARGBHex();// t.getARGBHex(); borderColorStr = borderColorStr == null || borderColorStr.length() < 1 ? "#000000" : borderColorStr.substring(2); return bordesr[b] + borderStyles[s] + borderColorStr + " 1px;"; } return ""; } @SuppressWarnings({ "rawtypes", "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>(); 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; } }
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