jquery.fileDownload.js插件導出excel

因為使用ajax導出excel會出現問題，是以現在使用jQuery.fileDownload.js插件來解決導出excel的問題

http://johnculviner.com/jquery-file-download-plugin-for-ajax-like-feature-rich-file-downloads/

在頁面引入jquery.fileDownload.js插件

1、如下所示

jquery-file-Download.js源碼解析：

2、在背景代碼中設定Cookie，并傳回Cookie的值

public

void export(final HttpServletRequest request, HttpServletResponse

response,final String semesterId) throws IOException,

IllegalArgumentException, IllegalAccessException {

  String fileName = "excel檔案";

  response.reset();

  response.setContentType("application/vnd.ms-excel;charset=utf-8");

  response.setHeader("Content-Disposition", "p_w_upload;filename=" + new String((fileName + ".xls").getBytes(), "iso-8859-1"));

  //在這裡加入設定Cookie   -------------

  Cookie fileDownload=new Cookie("fileDownload", "true");

  fileDownload.setPath("/");

  response.addCookie(fileDownload);

  //------------------------------------

  ServletOutputStream out = response.getOutputStream();

  final HSSFWorkbook workbook = new HSSFWorkbook();

  List<Future<Boolean>> resultList = new ArrayList<Future<Boolean>>();

3、如果要使回調函數successCallback和failCallback起作用，還得在背景代碼中傳回Cookie

 jquery-file-Download.js源碼解析：

  背景設定與特定的cookie值

  前台js定時去調用checkFileDownloadComplete方法,檢查前台與背景傳回的cookie值是否比對