<fieldset>     <legend>Download annotator list</legend>     <img src="pages/tools/listannotator/img/text.png" id="downloadAnnotatorListCsvImg"/>&nbsp;     <img src="pages/tools/listannotator/img/xls.png"/> </fieldset>

$("#downloadAnnotatorListCsvImg").click(        function(){            var wnd=openCenterWindow(APP_NAME+"downloadAnnotatorListCsv.html","Download Annotator List in CSV format",400,300);        }    );var APP_NAME="/rttsbiz2/";function openCenterWindow(url,windowName,width,height){    var left = (window.screen.availWidth-10-width)/2;         var top = (window.screen.availHeight-30-height)/2;                 var wnd=window.open(url,windowName,"height="+height+",width="+width+",top="+top+",left="+left+",resizable=yes,scrollbars=yes,status=no,location=no,");    return wnd;}

@RequestMapping("/downloadAnnotatorListCsv")    public ModelAndView download(HttpServletRequest request,HttpServletResponse response){                String fileName="download-single.txt";                response.reset();// 不加这一句的话会出现下载错误         response.setHeader("Content-disposition", "attachment; filename="+fileName);// 设定输出文件头           response.setContentType("text/x-plain");// 定义输出类型                 try {            ServletOutputStream out = response.getOutputStream();                        String path = System.getProperty("java.io.tmpdir") + "\\poem.txt";            File file = new File(path);            FileOutputStream fos = new FileOutputStream(file);               Writer writer = new OutputStreamWriter(fos, "utf-8");                           String text="Hello！download!";            writer.write(text);               writer.close();               fos.close();                          FileInputStream fis = new java.io.FileInputStream(file);            ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream(4096);                        byte[] cache = new byte[4096];            for (int offset = fis.read(cache); offset != -1; offset = fis.read(cache)) {                    byteOutputStream.write(cache, 0, offset);            }                        byte[] bt = null;            bt = byteOutputStream.toByteArray();                                       out.write(bt);            out.flush();            out.close();            fis.close();            if(file.exists()){                file.delete();            }                    } catch (Exception e) {            // TODO Auto-generated catch block            e.printStackTrace();        }                        return null;    }}