poi excel文件转换为html文件，实现在线预览
excel文件包含图片转换为html还没实现
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import org.apache.commons.lang3.StringUtils;
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.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.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.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.maiyue.base.utils.FileUtils;
/**
* excel文件转换为html
*
* @author chen
*
*/
public class POIExcelToHtmlUtils {
private static Logger logger = LoggerFactory.getLogger(POIExcelToHtmlUtils.class);
/**
*
* @param sourceFilePath
* @param targetFilePath
* @return
*/
public static String excelToHtml(String sourceFilePath, String targetFilePath) {
FileUtils.createFileFolder(targetFilePath);
InputStream is = null;
String htmlExcel = null;
try {
File sourcefile = new File(sourceFilePath);
is = new FileInputStream(sourcefile);
Workbook wb = WorkbookFactory.create(is);
if (wb instanceof XSSFWorkbook) {
XSSFWorkbook xWb = (XSSFWorkbook) wb;
htmlExcel = POIExcelToHtmlUtils.getExcelInfo(xWb, true);
} else if (wb instanceof HSSFWorkbook) {
HSSFWorkbook hWb = (HSSFWorkbook) wb;
htmlExcel = POIExcelToHtmlUtils.getExcelInfo(hWb, true);
}
if (StringUtils.isNotBlank(htmlExcel)) {
FileUtils.writeToFile(htmlExcel, targetFilePath, "gbk");
return targetFilePath;
} else {
return null;
}
} catch (Exception e) {
logger.error("excel文档转换为html,发生异常,源文件={},目标文件={}", sourceFilePath, targetFilePath, e);
return null;
} finally {
try {
is.close();
} catch (IOException e) {
logger.error("excel文档转换为html,关闭流发生异常,源文件={},目标文件={}", sourceFilePath, targetFilePath, e);
return null;
}
}
}
/**
*
* @param wb
* @param isWithStyle
* @return
*/
private static String getExcelInfo(Workbook wb, boolean isWithStyle) {
StringBuffer sb = new StringBuffer();
int sheetCounts = wb.getNumberOfSheets();
for (int i = 0; i < sheetCounts; i++) { String stringValue = getCellValue(cell); if (isWithStyle) { sb.append(">");
Sheet sheet = wb.getSheetAt(i);
int lastRowNum = sheet.getLastRowNum();
Map
sb.append("
");
sb.append(sheet.getSheetName());
sb.append("");
");
Row row = null;
Cell cell = null;
for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {
row = sheet.getRow(rowNum);
if (row == null) {
sb.append("
continue;
}
sb.append(""); ");
int lastColNum = row.getLastCellNum();
for (int colNum = 0; colNum < lastColNum; colNum++) {
cell = row.getCell(colNum);
if (cell == null) {
sb.append(" ");
continue;
}
//System.out.println("-===="+stringValue);
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(" } else if (map[1].containsKey(rowNum + "," + colNum)) {
map[1].remove(rowNum + "," + colNum);
continue;
} else {
sb.append(" }
");
dealExcelStyle(wb, sheet, cell, sb);
}
if (StringUtils.isBlank(stringValue)) {
sb.append(" ");
} else {
sb.append(stringValue.replace(String.valueOf((char) 160), " "));
}
sb.append("
}
sb.append("
}
sb.append("
}
return sb.toString();
}
private static Map
Map
Map
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;
}
/**
*
* @param cell
* @return
*/
private static String getCellValue(Cell cell) {
String result = new String();
switch (cell.getCellType()) {
case Cell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) {
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) {
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();
if (temp.equals("General")) {
format.applyPattern("#");
}
result = format.format(value);
}
break;
case Cell.CELL_TYPE_STRING:
// cell.getRichStringCellValue().toString()
result = String.valueOf(cell.getStringCellValue());;
break;
case Cell.CELL_TYPE_BLANK:
result = "";
break;
default:
result = "";
break;
}
return result;
}
/**
*
* @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) + "' ");
short verticalAlignment = cellStyle.getVerticalAlignment();
sb.append("valign='" + convertVerticalAlignToHtml(verticalAlignment) + "' ");
if (wb instanceof XSSFWorkbook) {
XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();
short boldWeight = xf.getBoldweight();
sb.append("style='");
sb.append("font-weight:" + boldWeight + ";");
sb.append("font-size: " + xf.getFontHeight() / 2 + "%;");
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) + ";");
}
XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
if (bgColor != null && !"".equals(bgColor)) {
sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";");
}
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();
HSSFColor hc = palette.getColor(fontColor);
sb.append("font-weight:" + boldWeight + ";");
sb.append("font-size: " + hf.getFontHeight() / 2 + "%;");
String fontColorStr = convertToStardColor(hc);
if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
sb.append("color:" + fontColorStr + ";");
}
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 + ";");
}
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("' ");
}
}
/**
*
* @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;
}
/**
*
* @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" };
/**
*
* @param palette
* @param b
* @param s
* @param t
* @return
*/
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;";
}
/**
*
* @param b
* @param s
* @param xc
* @return
*/
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 "";
}
/*public static void main(String[] args) {
POIExcelToHtmlUtils.excelToHtml("D:/diagnosis/file/temp/excel2007.xlsx", "D:/diagnosis/file/temp/test13.html");
POIExcelToHtmlUtils.excelToHtml("D:/diagnosis/file/temp/excel2003.xls", "D:/diagnosis/file/temp/test14.html");
}*/
}