前台代码：
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<button class="btn btn-sm btn-success" type="submit" id="detailEp" onclick="return exportCheck(true);" forbid="yes"> <i class="icon-arrow-right bigger-110"></i> 导出</button><br><script>$(function() { var timer = "";});//点击导出按钮时禁用导出按钮$("#myForm").submit(function() { $("button[type=submit]",this).attr("disabled","disabled"); //提交导出后定时去查看有没有导出成功 timer = setInterval(refrashPg,1000);})//导出成功后会放开导出按钮的禁用function refrashPg() { if (getCk() =="1") { clearInterval(timer); $("#detailEp").removeAttr("disabled"); } delCk();}//js获取到cookiefunction getCk() { debugger var ck = document.cookie.split(";"); var ckname = ""; for (var i = 0;i<ck.length;i++) { var arr = ck[i].split("="); if (arr[0] =="updtstatus") { ckname = arr[1]; break; } } return ckname;}//js删除掉cookiefunction delCk() { var exp = new Date(); var name = "updtstatus"; exp.setTime(exp.getTime()-1000); var cval = getCk(); document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();}} |
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后台导出代码就是普通的Java POI代码：
1 public void buildExcelDocument(Map<String, Object> obj,String fileName,String type,
2 HttpServletRequest request, HttpServletResponse response)
3 throws Exception {
4 HSSFWorkbook workbook = new HSSFWorkbook();
5 if ("1".equals(type)) {
6 List<Map<String, Object>> contentList = (List<Map<String, Object>>) obj.get("content");
7 HSSFSheet sheet = workbook.createSheet("sheet1");//创建Excel的版本是2003-2007（xls） 如果需要2010的话，用 XSSFSheet
8 Map<String,String> titleList = (Map<String, String>) obj.get("title");
9 //表头的key 对应内容listMap中的map的key
10 List<String> mkey = new ArrayList<String>();
11 //表头的value 表头
12 List<String> mvalue = new ArrayList<String>();
13 Iterator<Entry<String, String>> it = titleList.entrySet().iterator();
14 while(it.hasNext()){
15 @SuppressWarnings("rawtypes")
16 java.util.Map.Entry entry = (java.util.Map.Entry)it.next();
17 mkey.add((String) entry.getKey());
18 mvalue.add((String) entry.getValue());
19 }
20 sheet.setDefaultColumnWidth((short) 12);
21 HSSFCell cell = null;
22 for (int i = 0;i<mvalue.size();i++) {
23 cell = getCell(sheet, 0, i);
24 setText(cell, mvalue.get(i));
25 }
26
27 for (short i = 0; i < contentList.size(); i++) {
28 HSSFRow sheetRow = sheet.createRow(i+1);
29 Map<String, Object> entity = contentList.get(i);
30 for (int j = 0;j< mkey.size();j++) {
31 if (entity.get(mkey.get(j)) instanceof String) {
32 sheetRow.createCell(j).setCellValue((String)entity.get(mkey.get(j)));
33 } else if (entity.get(mkey.get(j)) instanceof Double) {
34 sheetRow.createCell(j).setCellValue((Double)entity.get(mkey.get(j)));
35 } else if (entity.get(mkey.get(j)) instanceof Date){
36 String date = (entity.get(mkey.get(j))).toString();
37 sheetRow.createCell(j).setCellValue(date.substring(0, 10));
38 } else if (entity.get(mkey.get(j)) instanceof BigDecimal){
39 sheetRow.createCell(j).setCellValue((entity.get(mkey.get(j))).toString());
40 }
41 }
42 }
43 }
44 } else if ("2".equals(type)) {
45 List<String[]> contentList = (List<String[]>) obj.get("content");
46 HSSFSheet sheet = workbook.createSheet("sheet1");
47 String[] titleList = (String[]) obj.get("title");
48 HSSFCell cell = null;
49 for (int i = 0;i<titleList.length;i++) {
50 cell = getCell(sheet, 0, i);
51 setText(cell, titleList[i]);
52 }
53 for (short i = 0; i < contentList.size(); i++) {
54 HSSFRow sheetRow = sheet.createRow(i+1);
55 String[] detail = contentList.get(i);
56 for (int j = 0;j< detail.length;j++) {
57 sheetRow.createCell(j).setCellValue((String)contentList.get(i)[j]);
58 }
59 }
60 }
61
62 //设置下载时客户端Excel的名称
63 String filename = fileName + ".xls";
64 //处理中文文件名
65 filename = Chineseutil.encodeFilename(filename, request);
66 response.setContentType("application/Vnd.ms-excel;charset=UTF-8");
67 response.setHeader("Content-Disposition", "attachment;filename=" + new String(filename.getBytes("gb2312"), "iso8859-1"));
68 OutputStream ouputStream = response.getOutputStream();
69 workbook.write(ouputStream);
70
71 //导出数据后将信息存入cookie
72 Cookie status = new Cookie("updtstatus", "1");
73 status.setMaxAge(3600);//设置cookie存活时间1个小时
74 response.addCookie(status);
75
76 ouputStream.flush();
77 ouputStream.close();
78 }