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发表时间:2008-07-04
由于近期项目要用到excel来转存页面中的表单数据,对poi操作excel进行了一番了解,写了以下,但总觉的不是很好 特此:发布在此供大家评论,广义集思,还望多多指教 1. workBook处理类 /** * Excel WorkBook工具类 * @author dsy * @version 1.0 */ public class ExcelWorkBook { public HSSFWorkbook workbook = null; public static HSSFWorkbook workbookTemp = null; //设置当前workbookName private String workbookName = null; private HSSFSheet sheet = null; private FileOutputStream fileOut; public ExcelWorkBook() { if(workbook != null) { workbook = null; } workbook = workbookTemp; } public ExcelWorkBook(String workbookName) { workbook = workbookTemp; setWorkbookName(workbookName); } public String getWorkbookName() { return workbookName; } public void setWorkbookName(String workbookName) { workbookName = workbookName; } public HSSFSheet getSheet() { sheet = workbook.createSheet(getWorkbookName()); return sheet; } /** * 用于stylUtils的所需要的workbook必须项所做的处理 * @return */ public static HSSFWorkbook getWorkbook() { return workbookTemp; } public static void setWorkbook(HSSFWorkbook workbook) { workbookTemp = workbook; } /** * 输入当前WorkBook为下载临时文件记录 * @param excelName */ public void writerFileStream(String excelName) { try { fileOut = new FileOutputStream(excelName); workbook.write(fileOut); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { try { fileOut.flush(); fileOut.close(); if(workbook != null) { workbook = null; } } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } }
2. Excel Row工具类
/** * Excel Row工具类 * @author dsy * @version 1.0 */ public class ExcelSheetRow { public ExcelSheetRow() { // TODO Auto-generated constructor stub } public static HSSFSheet sheet = null; /** * 设置当前Sheet名字 */ private static String sheetName = null; private static HSSFRow row = null; /** * 创建当前标题行 * @param sheet * @return */ public static HSSFRow createCurrSheetTitle(ExcelWorkBook work) { HSSFSheet sheet = work.getSheet(); row = sheet.createRow(0); return row; } /** * 创建当前excel记录内容 * @param sheet * @param i * @return */ public static HSSFRow createCurrSheetRecord(ExcelWorkBook work,int i) { HSSFSheet sheet = work.getSheet(); row = sheet.createRow(i+1); return row; } public static String getSheetName() { return sheetName; } public static void setSheetName(String sheetName) { ExcelSheetRow.sheetName = sheetName; } }
3. Excel Cell工具类 /** * Excel Cell工具类 * @author dsy * @version 1.0 */ public class ExcelSheetCell { private static HSSFRow row = null; private static HSSFCell cell = null; /** * 用于产生当前excel标题 * @param sheet [当前工作表单] * @param firstRowValue [标题数组] * @param style [当前单元格风格] */ public static void createCurrRowTitle(ExcelSheetRow sheetRow,ExcelWorkBook work ,String[] firstRowValue,HSSFCellStyle style) { row = sheetRow.createCurrSheetTitle(work); for (int i = 0; i < firstRowValue.length; i++) { cell = row.createCell((short) i); cell.setCellStyle(style); cell.setEncoding(HSSFCell.ENCODING_UTF_16); cell.setCellValue(firstRowValue[i]); } } /** * 用于生成excel当前记录内容,标题除外 * @param sheet [当前工作表单] * @param beanList [当前数据列表,i=Object[]] * @param style [当前单元格风格] */ public static void createCurrRowRecord(ExcelSheetRow sheetRow,ExcelWorkBook work,List beanList,HSSFCellStyle style) { Object[] obj = null; for (int i = 0; i < beanList.size(); i++) { row = sheetRow.createCurrSheetRecord(work,i); obj = (Object[]) beanList.get(i); if (obj != null) { createExcelCell(row, obj,style); } } } /** * 需要以数组的方式提供当前每条记录 * 通过数组自动判断有多少列,生成当前行 */ private static void createExcelCell(HSSFRow row, Object[] obj,HSSFCellStyle style) { try { for (int i = 0; i < obj.length; i++) { try { if (obj[i].toString() != null) { cell = row.createCell((short) i); cell.setCellStyle(style); cell.setEncoding(HSSFCell.ENCODING_UTF_16); cell.setCellValue(obj[i].toString()); } } catch (NullPointerException e) { continue; } } } catch (Exception ex) { System.out.print(ex); } } }
4. Excel Style风格工具类 /** * Excel Style风格工具类 * @author dsy * @version 1.0 */ public class ExcelCellStyleUtils{ //标题样式 public static HSSFCellStyle titleStyle; //时间样式 public static HSSFCellStyle dataStyle; //单元格样式 public static HSSFCellStyle nameStyle; //超链接样式 public static HSSFCellStyle linkStyle; public static HSSFFont font; public ExcelCellStyleUtils(ExcelWorkBook work) { titleStyle = linkStyle(work.getWorkbook()); dataStyle = dataStyle(work.getWorkbook()); nameStyle = nameStyle(work.getWorkbook()); linkStyle = linkStyle(work.getWorkbook()); } /** * 超链接样式 * @return HSSFCellStyle */ private static HSSFCellStyle linkStyle(HSSFWorkbook work) { HSSFCellStyle linkStyle = work.createCellStyle(); linkStyle.setBorderBottom((short)1); linkStyle.setBorderLeft((short)1); linkStyle.setBorderRight((short)1); linkStyle.setBorderTop((short)1); linkStyle.setFillForegroundColor(HSSFColor.SKY_BLUE.index); linkStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); HSSFFont font = work.createFont(); font.setFontName(HSSFFont.FONT_ARIAL); font.setUnderline((byte)1); font.setColor(HSSFColor.BLUE.index); linkStyle.setFont(font); return linkStyle; } /**s * 单元格样式 * @return HSSFCellStyle */ private static HSSFCellStyle nameStyle(HSSFWorkbook work) { HSSFCellStyle nameStyle = work.createCellStyle(); nameStyle.setBorderBottom((short)1); nameStyle.setBorderLeft((short)1); nameStyle.setBorderRight((short)1); nameStyle.setBorderTop((short)1); nameStyle.setFillForegroundColor(HSSFColor.LIGHT_CORNFLOWER_BLUE.index); nameStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); return nameStyle; } /** * 时间样式 * @return HSSFCellStyle */ private static HSSFCellStyle dataStyle(HSSFWorkbook work) { HSSFCellStyle dataStyle = work.createCellStyle(); dataStyle.setBorderBottom((short)1); dataStyle.setBorderLeft((short)1); dataStyle.setBorderRight((short)1); dataStyle.setBorderTop((short)1); dataStyle.setFillForegroundColor(HSSFColor.LIGHT_GREEN.index); dataStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); dataStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER); return dataStyle; } /** * 标题样式 * @return HSSFCellStyle */ private static HSSFCellStyle titleStyle(HSSFWorkbook work) { HSSFCellStyle titleStyle = work.createCellStyle(); font = work.createFont(); font.setItalic(true); font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); font.setColor(HSSFColor.BLUE.index); titleStyle.setBorderBottom(HSSFCellStyle.BORDER_DOUBLE); titleStyle.setBorderLeft((short)1); titleStyle.setBorderRight((short)1); titleStyle.setBorderTop(HSSFCellStyle.BORDER_DOUBLE); titleStyle.setFillForegroundColor(HSSFColor.LIGHT_ORANGE.index); titleStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); return titleStyle; } }
5. 创建Excel工厂类 /** * 创建Excel工具类 * @author Administrator * */ public class ExcelUtilFactory { private static ExcelUtilFactory instance = null; private static HttpServletRequest excelRequest = null; private static HttpServletResponse excelResponse = null; public static ExcelUtilFactory getInstance(HttpServletRequest request, HttpServletResponse response) { if(instance == null) { instance = new ExcelUtilFactory(); } excelRequest = request; excelResponse = response; return instance; } public static void outputExcel(String excelName, List list, String[] firstRowValue) { ExcelWorkBook work = new ExcelWorkBook(); work.setWorkbookName(excelName); ExcelSheetRow sheetRow = new ExcelSheetRow(); ExcelSheetCell sheetCell = new ExcelSheetCell(); ExcelCellStyleUtils util = new ExcelCellStyleUtils(work); sheetCell.createCurrRowTitle(sheetRow, work, firstRowValue, util.titleStyle); sheetCell.createCurrRowRecord(sheetRow, work, list, util.nameStyle); String realPath = getExcelRealPath(excelName); // String realPath = "e:/temp/testRealPath_2.xls"; work.writerFileStream(realPath); downloadFile(realPath); } private static String getExcelRealPath(String excelName) { String realPath = excelRequest.getRealPath("/UploadFile"); File excelFile = new File(realPath); if(!excelFile.exists()) { excelFile.mkdirs(); } excelName = realPath+ "\\" + excelName+".xls"; return excelName; } private static void downloadFile(String strfileName) { try { // 获得ServletContext对象 if(excelFileNotFund(strfileName)) { throw new IllegalArgumentException("File=["+strfileName+"] not fund file path"); } // 取得文件的绝对路径 File excelFile = getExcelDownloadPath(strfileName); putResponseStream(strfileName, excelFile); } catch (IOException e) { e.printStackTrace(); } } private static File getExcelDownloadPath(String excelName) { // String realPath = excelRequest.getRealPath("/UploadFile"); // excelName = realPath+ "\\" + excelName; // excelName = replaceRNAll(excelName); File excelFile = new File(excelName); return excelFile; } //用传入参数的判断 private static boolean excelFileNotFund(String strfileName) { return strfileName == null|| strfileName.equals(""); } /** * * @param strfileName : 文件名称 * @param excelName : 文件的相对路径或绝对路径 * @throws UnsupportedEncodingException * @throws FileNotFoundException * @throws IOException */ private static void putResponseStream(String strfileName, File excelName) throws UnsupportedEncodingException, FileNotFoundException, IOException { strfileName = URLEncoder.encode(strfileName, "UTF-8"); excelResponse.setHeader("Content-disposition","attachment; filename=" + strfileName); excelResponse.setContentLength((int) excelName.length()); excelResponse.setContentType("application/x-download"); byte[] buffer = new byte[1024]; int i = 0; FileInputStream fis = new FileInputStream(excelName); while ((i = fis.read(buffer)) > 0) { JspWriter out = null; excelResponse.getOutputStream().write(buffer, 0, i); } } public static void main(String[] args) { long beginTime = System.currentTimeMillis(); System.out.println("开始时间:"+beginTime/1000); List beanList = new ArrayList(); String[] excelTitle = new String[10]; excelTitle[0] = "编号"; excelTitle[1] = "基金名称"; excelTitle[2] = "单位净值(NAV)"; excelTitle[3] = "日增长率(%)"; excelTitle[4] = "累积净值"; excelTitle[5] = "编号"; excelTitle[6] = "基金名称"; excelTitle[7] = "单位净值(NAV)"; excelTitle[8] = "日增长率(%)"; excelTitle[9] = "累积净值"; String[] beanArr = new String[10]; for (int i = 0; i < 55000; i++) { beanArr[0] = String.valueOf(i+1); beanArr[1] = "基金A"+i; beanArr[2] = "1.0427"; beanArr[3] = "-2.7514%"; beanArr[4] = "1.1558"; beanArr[5] = String.valueOf(i+1); beanArr[6] = "基金A"+i; beanArr[7] = "1.0427"; beanArr[8] = "-2.7514%"; beanArr[9] = "1.1558"; beanList.add(beanArr); } outputExcel("今天测试_factory", beanList, excelTitle); long endTime = System.currentTimeMillis(); System.out.println("测试55000,总计"+(endTime-beginTime)/1000+"秒,用时"); } }
以上是创建Excel所有工具类,还望大家指教!!!!!! 本人msn:wdmcln@hotmail.com 声明:ITeye文章版权属于作者,受法律保护。没有作者书面许可不得转载。
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发表时间:2008-07-04
过人,留点声音啊!
难道是写的太烂了?????? 好就留下宝贵的意见,我好改尽 |
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发表时间:2008-07-06
ExcelWorkBook应该能够放多张sheet,增加个addSheet(SheetModel s)方法更好,有多张sheet情况,另外每张sheet能够提起一个公共数据接口(SheetModel),象TableModel那样,这样每次生成一个excel会更方便。
另外sheet里面单元格格式设置更通用点就好了。 |
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发表时间:2008-07-07
@sylinx_yqg
呵,首先谢谢你的发言!对你的答复,很有建议性,确实应该这样! 但这里有几个问题: 1.ExcelWorkBook与每个sheet的对应情况,之前我也试过几种,但总会有异常? 也就改成了现在的情况 2. 你提出的这个SheetModel类,是用于生产数据,还是组装row和cell?这个还需要和你 多交流一下? |
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发表时间:2008-09-12
有这么多东西?学习学习。。
我写的才几行代码。。感觉很丑陋 |
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发表时间:2008-09-21
最近项目中用到这个,拿你的代码学习下!
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发表时间:2009-02-02
Exception in thread "main" java.lang.IllegalArgumentException: Sheet name cannot be blank, greater than 31 chars, or contain any of /\*?[]
楼主,我拷贝下来这么报这个错误呢? |
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