文件下载用ajax请求后没响应
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2022-06-10 17:50:19
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文件下载用ajax请求后没响应
// $.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;
点下载退出登录,记得带header 属性 var eleForm = $("<form method='get'></form>"); eleForm.attr("action",basePath + "restful/downloadFile.do"); eleForm.append($("<input />").attr("type", "hidden").attr("name", "fileId").attr("value", fileId)); eleForm.append($("<input />").attr("type", "hidden").attr("name", "AiSeeCloudToken").attr("value", sessionStorage["AiSeeCloudToken"])); $(document.body).append(eleForm); eleForm.submit();
后端:
@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"); response.setContentType("application/octet-stream"); //3.设置content-disposition响应头控制浏览器以下载的形式打开文件 response.addHeader("Content-Disposition","attachment;filename=" + new String(fileName.getBytes("UTF-8"),"ISO8859-1")); OutputStream os = null; BufferedInputStream bis = null; try { os = response.getOutputStream(); os.write(json.getBytes("bytes")); os.flush(); } catch (IOException e) { e.printStackTrace(); } finally { try { if(bis != null) bis.close(); } catch (IOException e) { e.printStackTrace(); } try { if (os != null) os.close(); } catch (IOException e) { e.printStackTrace(); } } } }
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