Download file after ajax request did not respond

Download file after ajax request did not respond

 

// $.ajax({
//     url:,
//     type:'POST',
//     dataType:'json',//json 返回值类型
//     data:{
//         fileId:fileId
//     },
//     success:function(data){
//         console.log("downFile-------");
//         MaskUtil.unmask();
//     },
//     error:function () {
//         MaskUtil.unmask();
//         alert("下载异常！", "", null, {type: 'warning'});
//     }
// });
改用 window.location.href=url 即可
window.location.href=basePath+"restful/downloadFile.do?fileId="+fileId;

  rear end:

@RequestMapping(value = "/downloadFile")
	public void  downloadFile(String fileId,HttpServletRequest request,HttpServletResponse response) throws IOException {
//		String fileId = request.getParameter("fileId") == null ? "" : request.getParameter("fileId");
		logger.info("downloadFile id ：" + fileId);
		Map<String,Object> params = Maps.newConcurrentMap();
		params.put("id", GlobalVariable.MONGO_KEY_PREFIX + fileId);
		JSONObject json = fileUpDownload.fileDownloadFromMongo(propertiesUtil.getUploadUrl(), propertiesUtil.getCollectionName(), params);
		JSONObject reJson = new JSONObject();
		reJson.put("success", false);
		if(json.getBooleanValue("success")) {
			String fileName = json.getString("filename");
			response.setCharacterEncoding ( "UTF-. 8");= null)
	            		bis.close();
	        the response.setContentType ( "file application / OCTET-Stream"); 
	        // set. 3 in response to content-disposition header control the browser to download the file open form. 
	        Response.AddHeader ( "the Content-Disposition", "Attachment; filename =" + new new String (fileName.getBytes ( "UTF-. 8"), "ISO8859-1")); 
			the OutputStream OS = null; 
	        BufferedInputStream BIS = null; 
			the try { 
	            OS = response.getOutputStream (); 
	            os.write (json.getBytes ( " bytes ")); 
	            os.flush (); 
	        } the catch (IOException E) { 
	            e.printStackTrace (); 
	        } {the finally 
	            the try { 
	            	! IF (BIS = null) 
	            } the catch (IOException E) {
	                e.printStackTrace();
	            }
	            try {
	            	if (os != null)
	            		os.close();
	            } catch (IOException e) {
	                e.printStackTrace();
	            }
	        }
		}
	}