POI Excel 转 HTML(兼容2003和2007)
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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原文地址: https://www.sunjs.com/article/detail/13ad474f133c40f8812800935399fcda.html
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