excel转html实现在线预览

⾸先说⼀下，本⼈发布的代码都是经过本⼈亲测，并且⽤在实际项⽬中。如果觉得可以，希望⼤家点个赞，谢谢⼤家。

有什么问题，⼤家评论出来，⼀起交流。好了，不废话了，下⾯来说⼀说这个东西怎么做。

⽹上也有许多版本，不过都不是我想要的，转出的html⽂件，要带表格，⽽且还能根据excel⽂件样式来⽣成html⽂件，不过太复杂的样式就⽀持不太强⼤了。

我采⽤poi去做这个功能，虽然还有jxl等其它⽅式，其它⽅式都有⼤的缺陷，有的不⽀持excel07版本，有的不能跨平台使⽤，这些都是很致命的缺点。

所以我采⽤poi去研究，我测试office和wps的excel版本都⽀持，并且兼容excel03及07以后版本，效果达到我的要求了，下⾯贴出源码，供⼤家⼀起学习。

jar包主要是这些

DecimalFormat;

SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

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;

pdf转html

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;

/**

3 * @param filePath excel源⽂件⽂件的路径

4 * @param htmlPositon ⽣成的html⽂件的路径

5 * @param isWithStyle 是否需要表格样式包含字体颜⾊边框对齐⽅式

7*/

8public static String readExcelToHtml(String filePath ,String htmlPositon, boolean isWithStyle){

10 InputStream is = null;

11 String htmlExcel = null;

12try {

13 File sourcefile = new File(filePath);

14 is = new FileInputStream(sourcefile);

15 Workbook wb = ate(is);

16if (wb instanceof XSSFWorkbook) { //03版excel处理⽅法

17 XSSFWorkbook xWb = (XSSFWorkbook) wb;

18 htmlExcel = ExcelInfo(xWb,isWithStyle);

19 }else if(wb instanceof HSSFWorkbook){ //07及10版以后的excel处理⽅法

20 HSSFWorkbook hWb = (HSSFWorkbook) wb;

21 htmlExcel = ExcelInfo(hWb,isWithStyle);

22 }

23 writeFile(htmlExcel,htmlPositon);

24 } catch (Exception e) {

25 e.printStackTrace();

26 }finally{

27try {

28 is.close();

29 } catch (IOException e) {

30 e.printStackTrace();

31 }

32 }

33return htmlPositon;

34 }

38private static String getExcelInfo(Workbook wb,boolean isWithStyle){

40 StringBuffer sb = new StringBuffer();

41 Sheet sheet = wb.getSheetAt(0);//获取第⼀个Sheet的内容

42int lastRowNum = LastRowNum();

43 Map<String, String> map[] = getRowSpanColSpanMap(sheet);

44 sb.append("<table style='border-collapse:collapse;' width='100%'>");

45 Row row = null; //兼容

46 Cell cell = null; //兼容

48for (int rowNum = FirstRowNum(); rowNum <= lastRowNum; rowNum++) { 49 row = Row(rowNum);

50if (row == null) {

51 sb.append("<tr><td ><nobr> </nobr></td></tr>");

52continue;

53 }

54 sb.append("<tr>");

55int lastColNum = LastCellNum();

56for (int colNum = 0; colNum < lastColNum; colNum++) {

57 cell = Cell(colNum);

58if (cell == null) { //特殊情况空⽩的单元格会返回null

59 sb.append("<td> </td>");

60continue;

61 }

63 String stringValue = getCellValue(cell);

64if (map[0].containsKey(rowNum + "," + colNum)) {

65 String pointString = map[0].get(rowNum + "," + colNum);

66 map[0].remove(rowNum + "," + colNum);

67int bottomeRow = Integer.valueOf(pointString.split(",")[0]);

68int bottomeCol = Integer.valueOf(pointString.split(",")[1]);

69int rowSpan = bottomeRow - rowNum + 1;

70int colSpan = bottomeCol - colNum + 1;

71 sb.append("<td rowspan= '" + rowSpan + "' colspan= '"+ colSpan + "' ");

72 } else if (map[1].containsKey(rowNum + "," + colNum)) {

73 map[1].remove(rowNum + "," + colNum);

74continue;

75 } else {

76 sb.append("<td ");

77 }

79//判断是否需要样式

80if(isWithStyle){

81 dealExcelStyle(wb, sheet, cell, sb);//处理单元格样式

82 }

84 sb.append("><nobr>");

85if (stringValue == null || "".im())) {

86 sb.append(" ");

87 } else {

88// 将ascii码为160的空格转换为html下的空格（）

89 sb.place(String.valueOf((char) 160)," "));

90 }

91 sb.append("</nobr></td>");

92 }

93 sb.append("</tr>");

94 }

96 sb.append("</table>");

String();

98 }

100private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {

101

102 Map<String, String> map0 = new HashMap<String, String>();

103 Map<String, String> map1 = new HashMap<String, String>();

104int mergedNum = NumMergedRegions();

105 CellRangeAddress range = null;

106for (int i = 0; i < mergedNum; i++) {

107 range = MergedRegion(i);

108int topRow = FirstRow();

109int topCol = FirstColumn();

110int bottomRow = LastRow();

111int bottomCol = LastColumn();

112 map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);

113// System.out.println(topRow + "," + topCol + "," + bottomRow + "," + bottomCol); 114int tempRow = topRow;

115while (tempRow <= bottomRow) {

116int tempCol = topCol;

117while (tempCol <= bottomCol) {

118 map1.put(tempRow + "," + tempCol, "");

119 tempCol++;

120 }

121 tempRow++;

122 }

123 ve(topRow + "," + topCol);

124 }

125 Map[] map = { map0, map1 };

126return map;

127 }

128

129

130/**

131 * 获取表格单元格Cell内容

132 * @param cell

133 * @return

134*/

135private static String getCellValue(Cell cell) {

136

137 String result = new String();

138switch (CellType()) {

139case Cell.CELL_TYPE_NUMERIC:// 数字类型

140if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理⽇期格式、时间格式

141 SimpleDateFormat sdf = null;

142if (CellStyle().getDataFormat() == BuiltinFormat("h:mm")) {

143 sdf = new SimpleDateFormat("HH:mm");

144 } else {// ⽇期

145 sdf = new SimpleDateFormat("yyyy-MM-dd");

146 }

147 Date date = DateCellValue();

148 result = sdf.format(date);

149 } else if (CellStyle().getDataFormat() == 58) {

150// 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)

151 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

152double value = NumericCellValue();

153 Date date = org.apache.poi.ss.usermodel.DateUtil

154 .getJavaDate(value);

155 result = sdf.format(date);

156 } else {

157double value = NumericCellValue();

158 CellStyle style = CellStyle();

159 DecimalFormat format = new DecimalFormat();

160 String temp = DataFormatString();

161// 单元格设置成常规

162if (temp.equals("General")) {

163 format.applyPattern("#");

164 }

165 result = format.format(value);

166 }

167break;

168case Cell.CELL_TYPE_STRING:// String类型

169 result = RichStringCellValue().toString();

170break;

171case Cell.CELL_TYPE_BLANK:

172 result = "";

173break;

174default:

175 result = "";

176break;

177 }

178return result;

179 }

180

181/**

182 * 处理表格样式

183 * @param wb

184 * @param sheet

185 * @param sb

186*/

187private static void dealExcelStyle(Workbook wb,Sheet sheet,Cell cell,StringBuffer sb){

188

189 CellStyle cellStyle = CellStyle();

190if (cellStyle != null) {

191short alignment = Alignment();

192// sb.append("align='" + convertAlignToHtml(alignment) + "' ");//单元格内容的⽔平对齐⽅式

193short verticalAlignment = VerticalAlignment();

194 sb.append("valign='"+ convertVerticalAlignToHtml(verticalAlignment)+ "' ");//单元格中内容的垂直排列⽅式195

196if (wb instanceof XSSFWorkbook) {

197

198 XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();

199short boldWeight = xf.getBoldweight();

200 String align = convertAlignToHtml(alignment);

201 sb.append("style='");

202 sb.append("font-weight:" + boldWeight + ";"); // 字体加粗

203 sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体⼤⼩

204int columnWidth = ColumnIndex()) ;

205 sb.append("width:" + columnWidth + "px;");

206 sb.append("text-align:" + align + ";");//表头排版样式

207 XSSFColor xc = xf.getXSSFColor();

208if (xc != null && !"".equals(xc)) {

209 sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜⾊

210 }

211

212 XSSFColor bgColor = (XSSFColor) FillForegroundColorColor();

213if (bgColor != null && !"".equals(bgColor)) {

214 sb.append("background-color:#" + ARGBHex().substring(2) + ";"); // 背景颜⾊

215 }

216 sb.append(getBorderStyle(BorderTop(), ((XSSFCellStyle) cellStyle).getTopBorderXSSFColor()));

217 sb.append(getBorderStyle(BorderRight(), ((XSSFCellStyle) cellStyle).getRightBorderXSSFColor())); 218 sb.append(getBorderStyle(BorderBottom(), ((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor())); 219 sb.append(getBorderStyle(BorderLeft(), ((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor()));

220

221 }else if(wb instanceof HSSFWorkbook){

222

223 HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);

224short boldWeight = hf.getBoldweight();

225short fontColor = hf.getColor();

226 sb.append("style='");

227 HSSFPalette palette = ((HSSFWorkbook) wb).getCustomPalette(); // 类HSSFPalette⽤于求的颜⾊的国际标准形式228 HSSFColor hc = Color(fontColor);

229 sb.append("font-weight:" + boldWeight + ";"); // 字体加粗

230 sb.append("font-size: " + hf.getFontHeight() / 2 + "%;"); // 字体⼤⼩

231 String align = convertAlignToHtml(alignment);

232 sb.append("text-align:" + align + ";");//表头排版样式

233 String fontColorStr = convertToStardColor(hc);

234if (fontColorStr != null && !"".im())) {

235 sb.append("color:" + fontColorStr + ";"); // 字体颜⾊

236 }

237int columnWidth = ColumnIndex()) ;

238 sb.append("width:" + columnWidth + "px;");

239short bgColor = FillForegroundColor();

240 hc = Color(bgColor);

241 String bgColorStr = convertToStardColor(hc);

242if (bgColorStr != null && !"".im())) {

243 sb.append("background-color:" + bgColorStr + ";"); // 背景颜⾊

244 }

245 sb.append( getBorderStyle(palette,BorderTop(),TopBorderColor()));

246 sb.append( getBorderStyle(palette,BorderRight(),RightBorderColor()));

247 sb.append( getBorderStyle(palette,BorderLeft(),LeftBorderColor()));

248 sb.append( getBorderStyle(palette,BorderBottom(),BottomBorderColor()));

249 }

250

251 sb.append("' ");

252 }

253 }

254

255/**

256 * 单元格内容的⽔平对齐⽅式

257 * @param alignment

258 * @return

259*/

260private static String convertAlignToHtml(short alignment) {

261

262 String align = "center";

263switch (alignment) {

264case CellStyle.ALIGN_LEFT:

265 align = "left";

266break;

267case CellStyle.ALIGN_CENTER:

268 align = "center";

269break;

270case CellStyle.ALIGN_RIGHT:

271 align = "right";

272break;

273default:

274break;

275 }

276return align;

277 }

278

279/**

280 * 单元格中内容的垂直排列⽅式

281 * @param verticalAlignment

282 * @return

283*/

284private static String convertVerticalAlignToHtml(short verticalAlignment) {

285

286 String valign = "middle";

287switch (verticalAlignment) {

288case CellStyle.VERTICAL_BOTTOM:

289 valign = "bottom";

290break;

291case CellStyle.VERTICAL_CENTER:

292 valign = "center";

293break;

294case CellStyle.VERTICAL_TOP:

295 valign = "top";

296break;

297default:

298break;

299 }

300return valign;

301 }

302

303private static String convertToStardColor(HSSFColor hc) {

304

305 StringBuffer sb = new StringBuffer("");

306if (hc != null) {

307if (HSSFColor.AUTOMATIC.index == hc.getIndex()) {

308return null;

309 }

310 sb.append("#");

311for (int i = 0; i < hc.getTriplet().length; i++) {

312 sb.append(Triplet()[i])));

313 }

314 }

315

String();

317 }

318

319private static String fillWithZero(String str) {

320if (str != null && str.length() < 2) {

321return "0" + str;

322 }

323return str;

324 }

325

326static String[] bordesr={"border-top:","border-right:","border-bottom:","border-left:"};

327static String[] borderStyles={"solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid","solid","solid","solid","solid"};

328

329private static String getBorderStyle( HSSFPalette palette ,int b,short s, short t){

330

331if(s==0)return bordesr[b]+borderStyles[s]+"#d0d7e5 1px;";;

332 String borderColorStr = convertToStardColor( Color(t));

333 borderColorStr=borderColorStr==null|| borderColorStr.length()<1?"#000000":borderColorStr;

334return bordesr[b]+borderStyles[s]+borderColorStr+" 1px;";

335

336 }

337

338private static String getBorderStyle(int b,short s, XSSFColor xc){

339

340if(s==0)return bordesr[b]+borderStyles[s]+"#d0d7e5 1px;";;

341if (xc != null && !"".equals(xc)) {

342 String borderColorStr = xc.getARGBHex();//t.getARGBHex();

343 borderColorStr=borderColorStr==null|| borderColorStr.length()<1?"#000000":borderColorStr.substring(2);

344return bordesr[b]+borderStyles[s]+borderColorStr+" 1px;";

345 }

346

347return "";

348 }

349/*

350 * @param content ⽣成的excel表格标签

351 * @param htmlPath ⽣成的html⽂件地址

352*/

353private static void writeFile(String content,String htmlPath){

354 File file2 = new File(htmlPath);

355 StringBuilder sb = new StringBuilder();

356try {

357 ateNewFile();//创建⽂件

358

359 sb.append("<html><head><meta http-equiv=\"Content-Type\" content=\"text/html; charset=GBK\"><title>Html Test</title></head><body>"); 360 sb.append("<div>");

361 sb.append(content);

362 sb.append("</div>");

363 sb.append("</body></html>");

364

365 PrintStream printStream = new PrintStream(new FileOutputStream(file2));

366

367 printStream.String());//将字符串写⼊⽂件

368

excel转html实现在线预览

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