SpringMVC的Excel导出（弹框提示下载）
重要的事情说三遍！！！！
jQuery的Ajax函数、及ajaxSubmit等函数的返回类型（dataType）只有xml、text、json、html等类型，没有“流”类型.
jQuery的ajax函数、及ajaxSubmit等函数的返回类型（dataType）只有xml、text、json、html等类型，没有“流”类型.
jQuery的ajax函数、及ajaxSubmit等函数的返回类型（dataType）只有xml、text、json、html等类型，没有“流”类型.
所以想要弹框下载，就不能用Ajax来做！！！！
jsp：
<span class="btn" onclick="Excel_export()">EXCEL导出</span> <div style="display: none;"> <form action= "login/excel_download.action" method="get"> <input type="text" id="startime" name="startime"> <input type="text" id="stoptime" name="stoptime"> <input type="text" id="mintemp" name="mintemp"> <input type="text" id="maxtemp" name="maxtemp"> <input type="text" id="winds" name="winds"> <input type="text" id="id" name="id"> <input type="submit" id="sub" value="Submit" /> </form> </div>JS
function excel_export(){ $("#startime").val(begaintime); $("#stoptime").val(endtime); $("#mintemp").val(wind_sp); $("#maxtemp").val(min_temp); $("#winds").val(max_temp); $("#id").val(a1); $("#sub").click(); }后台：
@RequestMapping(value = "excel_download") @ResponseBody public void excel_download(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { resp.setCharacterEncoding("utf-8"); resp.setHeader("Cache-Control", "no-cache"); String fileName = "excel文件"; String startime = req.getParameter("startime"); String stoptime = req.getParameter("stoptime"); String mintemp = req.getParameter("mintemp"); String maxtemp = req.getParameter("maxtemp"); String winds = req.getParameter("winds"); String id = req.getParameter("id"); System.out.PRintln(startime+","+stoptime+","+mintemp+","+maxtemp+"<"+winds+","+id); Map<String, Object> param=new HashMap<String, Object>(); param.put("id", id.substring(1, id.length())); param.put("startime", startime); param.put("stoptime", stoptime); param.put("mintemp", mintemp); param.put("maxtemp", maxtemp); param.put("winds", winds); List<RecordInfo> r = recordService.GetRecordByCondition_excel(param); System.out.println(r); // PoiExpExcel.main(r); String[] title = {"序号","风速","记录时间","温度"}; HSSFWorkbook workbook = new HSSFWorkbook(); //创建一个工作表sheet HSSFSheet sheet = workbook.createSheet(); //创建第一行 HSSFRow row = sheet.createRow(0); HSSFCell cell = null; //插入第一行数据title for(int i= 0; i < title.length; i++){ cell = row.createCell(i); cell.setCellValue(title[i]); } //追加数据 for(int i= 1; i <= r.size(); i++){ HSSFRow nextrow = sheet.createRow(i); HSSFCell cell2 = nextrow.createCell(0); cell2.setCellValue(i); cell2 = nextrow.createCell(1); cell2.setCellValue(r.get(i-1).getRecord_wind_speed()); cell2 = nextrow.createCell(2); cell2.setCellValue(r.get(i-1).getRecord_time()); cell2 = nextrow.createCell(3); cell2.setCellValue(r.get(i-1).getRecord_temp()); } //创建一个文件 /*File file = new File("C:/Users/Administrator/Desktop/poi_test.xls"); try { file.createNewFile(); //将EXCEL内容存盘 FileOutputStream stream = FileUtils.openOutputStream(file); workbook.write(stream); stream.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }*/ ByteArrayOutputStream os = new ByteArrayOutputStream(); try { workbook.write(os); } catch (IOException e) { e.printStackTrace(); } byte[] content = os.toByteArray(); InputStream is = new ByteArrayInputStream(content); // 设置response参数，可以打开下载页面 resp.reset(); resp.setContentType("application/vnd.ms-excel;charset=utf-8"); resp.setHeader("Content-Disposition", "attachment; filename=" + new String((fileName + ".xls").getBytes(), "iso-8859-1")); ServletOutputStream out = resp.getOutputStream(); BufferedInputStream bis = null; BufferedOutputStream bos = null; try { bis = new BufferedInputStream(is); bos = new BufferedOutputStream(out); byte[] buff = new byte[2048]; int bytesRead; // Simple read/write loop. while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) { bos.write(buff, 0, bytesRead); } } catch (final IOException e) { throw e; } finally { if (bis != null) bis.close(); if (bos != null) bos.close(); } }