工作需求：
提供EXCEL模板上传后预览；EXCEL解析成终端风格HTML。
处理方案：
POI解析EXCEL，预览时尽量获取原有表格的样式；终端使用EXCEL解析的无样式HTML，然后通过jQuery添加CSS样式
遇到问题：
CSDN上大牛处理03版xls格式的有成功例子；但是07版xlsx格式的样式处理未找到理想中的例子
下文是参考大牛的例子整理后的程序 供参考！
EXCEL表格07xlsx格式
通过POI解析带样式的效果
项目JAR文件注意版本
JAVA
1 package com.hboy.exceltohtml;
2
3 import java.io.File;
4 import java.io.FileInputStream;
5 import java.io.IOException;
6 import java.io.InputStream;
7 import java.text.DecimalFormat;
8 import java.text.SimpleDateFormat;
9 import java.util.Date;
10 import java.util.HashMap;
11 import java.util.Map;
12 import org.apache.poi.hssf.usermodel.HSSFCellStyle;
13 import org.apache.poi.hssf.usermodel.HSSFDataFormat;
14 import org.apache.poi.hssf.usermodel.HSSFDateUtil;
15 import org.apache.poi.hssf.usermodel.HSSFFont;
16 import org.apache.poi.hssf.usermodel.HSSFPalette;
17 import org.apache.poi.hssf.usermodel.HSSFWorkbook;
18 import org.apache.poi.hssf.util.HSSFColor;
19 import org.apache.poi.ss.usermodel.Cell;
20 import org.apache.poi.ss.usermodel.CellStyle;
21 import org.apache.poi.ss.usermodel.Row;
22 import org.apache.poi.ss.usermodel.Sheet;
23 import org.apache.poi.ss.usermodel.Workbook;
24 import org.apache.poi.ss.usermodel.WorkbookFactory;
25 import org.apache.poi.ss.util.CellRangeAddress;
26 import org.apache.poi.xssf.usermodel.XSSFCellStyle;
27 import org.apache.poi.xssf.usermodel.XSSFColor;
28 import org.apache.poi.xssf.usermodel.XSSFFont;
29 import org.apache.poi.xssf.usermodel.XSSFWorkbook;
30
31 /**
32 * @功能描述 POI 读取 Excel 转 HTML 支持 03xls 和 07xlsx 版本 包含样式
33 * @author Devil
34 * @创建时间 2015/4/19 21:34
35 */
36 public class POIReadExcelToHtml {
37
38 /**
39 * 测试
40 * @param args
41 */
42 public static void main(String[] args) {
43
44 String path = "E://Microsoft Excel 工作表.xlsx";//E://Microsoft Excel 工作表.xlsx
45 InputStream is = null;
46 String htmlExcel = null;
47 try {
48 File sourcefile = new File(path);
49 is = new FileInputStream(sourcefile);
50 Workbook wb = WorkbookFactory.create(is);//此WorkbookFactory在POI-3.10版本中使用需要添加dom4j
51 if (wb instanceof XSSFWorkbook) {
52 XSSFWorkbook xWb = (XSSFWorkbook) wb;
53 htmlExcel = POIReadExcelToHtml.getExcelInfo(xWb,true);
54 }else if(wb instanceof HSSFWorkbook){
55 HSSFWorkbook hWb = (HSSFWorkbook) wb;
56 htmlExcel = POIReadExcelToHtml.getExcelInfo(hWb,true);
57 }
58 System.out.println(htmlExcel);
59 } catch (Exception e) {
60 e.printStackTrace();
61 }finally{
62 try {
63 is.close();
64 } catch (IOException e) {
65 e.printStackTrace();
66 }
67 }
68
69 }
70
71
72 /**
73 * 程序入口方法
74 * @param filePath 文件的路径
75 * @param isWithStyle 是否需要表格样式 包含 字体 颜色 边框 对齐方式
76 * @return <table>...</table> 字符串
77 */
78 public String readExcelToHtml(String filePath , boolean isWithStyle){
79
80 InputStream is = null;
81 String htmlExcel = null;
82 try {
83 File sourcefile = new File(filePath);
84 is = new FileInputStream(sourcefile);
85 Workbook wb = WorkbookFactory.create(is);
86 if (wb instanceof XSSFWorkbook) {
87 XSSFWorkbook xWb = (XSSFWorkbook) wb;
88 htmlExcel = POIReadExcelToHtml.getExcelInfo(xWb,isWithStyle);
89 }else if(wb instanceof HSSFWorkbook){
90 HSSFWorkbook hWb = (HSSFWorkbook) wb;
91 htmlExcel = POIReadExcelToHtml.getExcelInfo(hWb,isWithStyle);
92 }
93 } catch (Exception e) {
94 e.printStackTrace();
95 }finally{
96 try {
97 is.close();
98 } catch (IOException e) {
99 e.printStackTrace();
100 }
101 }
102 return htmlExcel;
103 }
104
105
106
107 public static String getExcelInfo(Workbook wb,boolean isWithStyle){
108
109 StringBuffer sb = new StringBuffer();
110 Sheet sheet = wb.getSheetAt(0);//获取第一个Sheet的内容
111 int lastRowNum = sheet.getLastRowNum();
112 Map<String, String> map[] = getRowSpanColSpanMap(sheet);
113 sb.append("<table style=‘border-collapse:collapse;‘ width=‘100%‘>");
114 Row row = null; //兼容
115 Cell cell = null; //兼容
116
117 for (int rowNum = sheet.getFirstRowNum(); rowNum <= lastRowNum; rowNum++) {
118 row = sheet.getRow(rowNum);
119 if (row == null) {
120 sb.append("<tr><td > </td></tr>");
121 continue;
122 }
123 sb.append("<tr>");
124 int lastColNum = row.getLastCellNum();
125 for (int colNum = 0; colNum < lastColNum; colNum++) {
126 cell = row.getCell(colNum);
127 if (cell == null) { //特殊情况 空白的单元格会返回null
128 sb.append("<td> </td>");
129 continue;
130 }
131
132 String stringValue = getCellValue(cell);
133 if (map[0].containsKey(rowNum + "," + colNum)) {
134 String pointString = map[0].get(rowNum + "," + colNum);
135 map[0].remove(rowNum + "," + colNum);
136 int bottomeRow = Integer.valueOf(pointString.split(",")[0]);
137 int bottomeCol = Integer.valueOf(pointString.split(",")[1]);
138 int rowSpan = bottomeRow - rowNum + 1;
139 int colSpan = bottomeCol - colNum + 1;
140 sb.append("<td rowspan= ‘" + rowSpan + "‘ colspan= ‘"+ colSpan + "‘ ");
141 } else if (map[1].containsKey(rowNum + "," + colNum)) {
142 map[1].remove(rowNum + "," + colNum);
143 continue;
144 } else {
145 sb.append("<td ");
146 }
147
148 //判断是否需要样式
149 if(isWithStyle){
150 dealExcelStyle(wb, sheet, cell, sb);//处理单元格样式
151 }
152
153 sb.append(">");
154 if (stringValue == null || "".equals(stringValue.trim())) {
155 sb.append(" ");
156 } else {
157 // 将ascii码为160的空格转换为html下的空格（ ）
158 sb.append(stringValue.replace(String.valueOf((char) 160)," "));
159 }
160 sb.append("</td>");
161 }
162 sb.append("</tr>");
163 }
164
165 sb.append("</table>");
166 return sb.toString();
167 }
168
169 private static Map<String, String>[] getRowSpanColSpanMap(Sheet sheet) {
170
171 Map<String, String> map0 = new HashMap<String, String>();
172 Map<String, String> map1 = new HashMap<String, String>();
173 int mergedNum = sheet.getNumMergedRegions();
174 CellRangeAddress range = null;
175 for (int i = 0; i < mergedNum; i++) {
176 range = sheet.getMergedRegion(i);
177 int topRow = range.getFirstRow();
178 int topCol = range.getFirstColumn();
179 int bottomRow = range.getLastRow();
180 int bottomCol = range.getLastColumn();
181 map0.put(topRow + "," + topCol, bottomRow + "," + bottomCol);
182 // System.out.println(topRow + "," + topCol + "," + bottomRow + "," + bottomCol);
183 int tempRow = topRow;
184 while (tempRow <= bottomRow) {
185 int tempCol = topCol;
186 while (tempCol <= bottomCol) {
187 map1.put(tempRow + "," + tempCol, "");
188 tempCol++;
189 }
190 tempRow++;
191 }
192 map1.remove(topRow + "," + topCol);
193 }
194 Map[] map = { map0, map1 };
195 return map;
196 }
197
198
199 /**
200 * 获取表格单元格Cell内容
201 * @param cell
202 * @return
203 */
204 private static String getCellValue(Cell cell) {
205
206 String result = new String();
207 switch (cell.getCellType()) {
208 case Cell.CELL_TYPE_NUMERIC:// 数字类型
209 if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
210 SimpleDateFormat sdf = null;
211 if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) {
212 sdf = new SimpleDateFormat("HH:mm");
213 } else {// 日期
214 sdf = new SimpleDateFormat("yyyy-MM-dd");
215 }
216 Date date = cell.getDateCellValue();
217 result = sdf.format(date);
218 } else if (cell.getCellStyle().getDataFormat() == 58) {
219 // 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)
220 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
221 double value = cell.getNumericCellValue();
222 Date date = org.apache.poi.ss.usermodel.DateUtil
223 .getJavaDate(value);
224 result = sdf.format(date);
225 } else {
226 double value = cell.getNumericCellValue();
227 CellStyle style = cell.getCellStyle();
228 DecimalFormat format = new DecimalFormat();
229 String temp = style.getDataFormatString();
230 // 单元格设置成常规
231 if (temp.equals("General")) {
232 format.applyPattern("#");
233 }
234 result = format.format(value);
235 }
236 break;
237 case Cell.CELL_TYPE_STRING:// String类型
238 result = cell.getRichStringCellValue().toString();
239 break;
240 case Cell.CELL_TYPE_BLANK:
241 result = "";
242 break;
243 default:
244 result = "";
245 break;
246 }
247 return result;
248 }
249
250 /**
251 * 处理表格样式
252 * @param wb
253 * @param sheet
254 * @param cell
255 * @param sb
256 */
257 private static void dealExcelStyle(Workbook wb,Sheet sheet,Cell cell,StringBuffer sb){
258
259 CellStyle cellStyle = cell.getCellStyle();
260 if (cellStyle != null) {
261 short alignment = cellStyle.getAlignment();
262 sb.append("align=‘" + convertAlignToHtml(alignment) + "‘ ");//单元格内容的水平对齐方式
263 short verticalAlignment = cellStyle.getVerticalAlignment();
264 sb.append("valign=‘"+ convertVerticalAlignToHtml(verticalAlignment)+ "‘ ");//单元格中内容的垂直排列方式
265
266 if (wb instanceof XSSFWorkbook) {
267
268 XSSFFont xf = ((XSSFCellStyle) cellStyle).getFont();
269 short boldWeight = xf.getBoldweight();
270 sb.append("style=‘");
271 sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
272 sb.append("font-size: " + xf.getFontHeight() / 2 + "%;"); // 字体大小
273 int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
274 sb.append("width:" + columnWidth + "px;");
275
276 XSSFColor xc = xf.getXSSFColor();
277 if (xc != null && !"".equals(xc)) {
278 sb.append("color:#" + xc.getARGBHex().substring(2) + ";"); // 字体颜色
279 }
280
281 XSSFColor bgColor = (XSSFColor) cellStyle.getFillForegroundColorColor();
282 //System.out.println("************************************");
283 //System.out.println("BackgroundColorColor: "+cellStyle.getFillBackgroundColorColor());
284 //System.out.println("ForegroundColor: "+cellStyle.getFillForegroundColor());//0
285 //System.out.println("BackgroundColorColor: "+cellStyle.getFillBackgroundColorColor());
286 //System.out.println("ForegroundColorColor: "+cellStyle.getFillForegroundColorColor());
287 //String bgColorStr = bgColor.getARGBHex();
288 //System.out.println("bgColorStr: "+bgColorStr);
289 if (bgColor != null && !"".equals(bgColor)) {
290 sb.append("background-color:#" + bgColor.getARGBHex().substring(2) + ";"); // 背景颜色
291 }
292 sb.append(getBorderStyle(0,cellStyle.getBorderTop(), ((XSSFCellStyle) cellStyle).getTopBorderXSSFColor()));
293 sb.append(getBorderStyle(1,cellStyle.getBorderRight(), ((XSSFCellStyle) cellStyle).getRightBorderXSSFColor()));
294 sb.append(getBorderStyle(2,cellStyle.getBorderBottom(), ((XSSFCellStyle) cellStyle).getBottomBorderXSSFColor()));
295 sb.append(getBorderStyle(3,cellStyle.getBorderLeft(), ((XSSFCellStyle) cellStyle).getLeftBorderXSSFColor()));
296
297 }else if(wb instanceof HSSFWorkbook){
298
299 HSSFFont hf = ((HSSFCellStyle) cellStyle).getFont(wb);
300 short boldWeight = hf.getBoldweight();
301 short fontColor = hf.getColor();
302 sb.append("style=‘");
303 HSSFPalette palette = ((HSSFWorkbook) wb).getCustomPalette(); // 类HSSFPalette用于求的颜色的国际标准形式
304 HSSFColor hc = palette.getColor(fontColor);
305 sb.append("font-weight:" + boldWeight + ";"); // 字体加粗
306 sb.append("font-size: " + hf.getFontHeight() / 2 + "%;"); // 字体大小
307 String fontColorStr = convertToStardColor(hc);
308 if (fontColorStr != null && !"".equals(fontColorStr.trim())) {
309 sb.append("color:" + fontColorStr + ";"); // 字体颜色
310 }
311 int columnWidth = sheet.getColumnWidth(cell.getColumnIndex()) ;
312 sb.append("width:" + columnWidth + "px;");
313 short bgColor = cellStyle.getFillForegroundColor();
314 hc = palette.getColor(bgColor);
315 String bgColorStr = convertToStardColor(hc);
316 if (bgColorStr != null && !"".equals(bgColorStr.trim())) {
317 sb.append("background-color:" + bgColorStr + ";"); // 背景颜色
318 }
319 sb.append( getBorderStyle(palette,0,cellStyle.getBorderTop(),cellStyle.getTopBorderColor()));
320 sb.append( getBorderStyle(palette,1,cellStyle.getBorderRight(),cellStyle.getRightBorderColor()));
321 sb.append( getBorderStyle(palette,3,cellStyle.getBorderLeft(),cellStyle.getLeftBorderColor()));
322 sb.append( getBorderStyle(palette,2,cellStyle.getBorderBottom(),cellStyle.getBottomBorderColor()));
323 }
324
325 sb.append("‘ ");
326 }
327 }
328
329 /**
330 * 单元格内容的水平对齐方式
331 * @param alignment
332 * @return
333 */
334 private static String convertAlignToHtml(short alignment) {
335
336 String align = "left";
337 switch (alignment) {
338 case CellStyle.ALIGN_LEFT:
339 align = "left";
340 break;
341 case CellStyle.ALIGN_CENTER:
342 align = "center";
343 break;
344 case CellStyle.ALIGN_RIGHT:
345 align = "right";
346 break;
347 default:
348 break;
349 }
350 return align;
351 }
352
353 /**
354 * 单元格中内容的垂直排列方式
355 * @param verticalAlignment
356 * @return
357 */
358 private static String convertVerticalAlignToHtml(short verticalAlignment) {
359
360 String valign = "middle";
361 switch (verticalAlignment) {
362 case CellStyle.VERTICAL_BOTTOM:
363 valign = "bottom";
364 break;
365 case CellStyle.VERTICAL_CENTER:
366 valign = "center";
367 break;
368 case CellStyle.VERTICAL_TOP:
369 valign = "top";
370 break;
371 default:
372 break;
373 }
374 return valign;
375 }
376
377 private static String convertToStardColor(HSSFColor hc) {
378
379 StringBuffer sb = new StringBuffer("");
380 if (hc != null) {
381 if (HSSFColor.AUTOMATIC.index == hc.getIndex()) {
382 return null;
383 }
384 sb.append("#");
385 for (int i = 0; i < hc.getTriplet().length; i++) {
386 sb.append(fillWithZero(Integer.toHexString(hc.getTriplet()[i])));
387 }
388 }
389
390 return sb.toString();
391 }
392
393 private static String fillWithZero(String str) {
394 if (str != null && str.length() < 2) {
395 return "0" + str;
396 }
397 return str;
398 }
399
400 static String[] bordesr={"border-top:","border-right:","border-bottom:","border-left:"};
401 static String[] borderStyles={"solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid ","solid","solid","solid","solid","solid"};
402
403 private static String getBorderStyle( HSSFPalette palette ,int b,short s, short t){
404
405 if(s==0)return bordesr[b]+borderStyles[s]+"#d0d7e5 1px;";;
406 String borderColorStr = convertToStardColor( palette.getColor(t));
407 borderColorStr=borderColorStr==null|| borderColorStr.length()<1?"#000000":borderColorStr;
408 return bordesr[b]+borderStyles[s]+borderColorStr+" 1px;";
409
410 }
411
412 private static String getBorderStyle(int b,short s, XSSFColor xc){
413
414 if(s==0)return bordesr[b]+borderStyles[s]+"#d0d7e5 1px;";;
415 if (xc != null && !"".equals(xc)) {
416 String borderColorStr = xc.getARGBHex();//t.getARGBHex();
417 borderColorStr=borderColorStr==null|| borderColorStr.length()<1?"#000000":borderColorStr.substring(2);
418 return bordesr[b]+borderStyles[s]+borderColorStr+" 1px;";
419 }
420
421 return "";
422 }
423
424 }
时间： 2024-10-11 20:36:16