java的excel表格的導出與下載
阿新 • • 發佈:2018-09-24
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今天做一個java對excel表格的導出和下載的時候,從網絡上搜尋了下載的模板,代碼如下:
控制層:
@RequestMapping(value = "excelOut_identifier") public void excelOutIdentifier(HttpServletRequest request, HttpServletResponse response, Long id, ActivationCodeSearchForm searchForm, ExhibitorInfoVenueBranchRelEditForm editForm, HttpSession session) {try { //獲取數據 List<ActivationCodeDto> list = organizerService.ActivationCodeById(id,searchForm).getRows(); //excel標題 String[] title = {"激活碼","主辦方","創建時間","失效時間"}; //excel文件名 String fileName = "激活碼信息表"+System.currentTimeMillis()+".xls"; //sheet名 String sheetName = "激活碼信息表"; SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); String [][] content = new String[title.length][]; for (int i = 0; i < list.size(); i++) { content[i] = new String[title.length]; ActivationCodeDto obj= list.get(i); content[i][0] = obj.getActivationCode(); content[i][1] = obj.getExhibitorInfoName(); content[i][2] = sdf.format(obj.getCreateTime()); content[i][3] = sdf.format(obj.getDisabledTime()); } //創建HSSFWorkbook HSSFWorkbook wb = organizerService.excelOutIdentifier(sheetName, title, content, null); this.organizerService.setResponseHeader(response, fileName); OutputStream os = response.getOutputStream(); wb.write(os); os.flush(); os.close(); }catch(IOException e1) { e1.printStackTrace(); } }
service層:
public HSSFWorkbook excelOutIdentifier(String sheetName,String []title,String [][]values, HSSFWorkbook wb){ // 第一步,創建一個HSSFWorkbook,對應一個Excel文件 if(wb == null){ wb = new HSSFWorkbook(); } // 第二步,在workbook中添加一個sheet,對應Excel文件中的sheet HSSFSheet sheet = wb.createSheet(sheetName); // 第三步,在sheet中添加表頭第0行,註意老版本poi對Excel的行數列數有限制 HSSFRow row = sheet.createRow(0); // 第四步,創建單元格,並設置值表頭 設置表頭居中 HSSFCellStyle style = wb.createCellStyle(); style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 創建一個居中格式 //聲明列對象 HSSFCell cell = null; //創建標題 for(int i=0;i<title.length;i++){ cell = row.createCell(i); cell.setCellValue(title[i]); cell.setCellStyle(style); } //創建內容 for(int i=0;i<values.length;i++){ row = sheet.createRow(i + 1); for(int j=0;j<values[i].length;j++){ //將內容按順序賦給對應的列對象 row.createCell(j).setCellValue(values[i][j]); } } return wb; } public void setResponseHeader(HttpServletResponse response, String fileName) { try { try { fileName = new String(fileName.getBytes(),"ISO8859-1"); } catch (UnsupportedEncodingException e) { // TODO Auto-generated catch block e.printStackTrace(); } response.setContentType("application/octet-stream;charset=ISO8859-1"); response.setHeader("Content-Disposition", "attachment;filename="+ fileName); response.addHeader("Pargam", "no-cache"); response.addHeader("Cache-Control", "no-cache"); } catch (Exception ex) { ex.printStackTrace(); } }
前端:
<button id="js-export" type="button" class="btn btn-primary">導出Excel</button>
jsp:
$(‘#js-export‘).click(function(){ window.location.href="${ctxRoot}/admin/organizer/excelOut_identifier.do?id=${id}" });
註意事項:
一開始我的前端頁面時這樣寫的,是寫的一個ajax請求:
<a class="btn btn-success es-ajax"
href="${ctxRoot}/admin/organizer/excelOut_identifier.do?id=${id}">導出excel</a>
在後端程序都實現可以跑的通的情況下,也沒有什麽日誌錯誤的打印,前端頁面並沒有彈出下載的頁面,然後再網絡上搜索了方法,測試了一遍,都是不行,最後再一篇文章中看到了一個答案,說下載的情況下,使用ajax請求時,是不會彈出下載的頁面出來的,隨即將其修改成window.location.href的請求方式了。果然就解決了這個問題
java的excel表格的導出與下載