用js下载文件，使用<a>标签，添加download属性即可。
var a = document.createElement("a"); a.href = "http://XXX.com/audioStream/8a9dbae9d0859e48fc1f590fcf6d4ccc.mp3"； a.download ="test.mp3"; a.click();
但是如果想给文件重新命名，貌似js无法实现。
因此考虑后台实现，用java代理请求，获取文件设置文件名，返回到前端。
public void downFiles(HttpServletResponse response,String url,String workInfoId,int type){ try{ String prefix = type == 1 ? "wav" : "txt"; url = type == 1 ? url : (url + "?textInfoId="+workInfoId); HttpEntity entity = Request.Get(url). execute().returnResponse().getEntity(); byte[] bys = EntityUtils.toByteArray(entity); //获取作品名称 Works works = this.worksDao.findByWorkId(workInfoId); String name = (works!=null && StringUtils.isNotBlank(works.getName())) ? works.getName() : Long.toString(new Date().getTime()); response.setHeader("Content-Disposition", "attachment; filename="+ new String(name.getBytes("utf-8"), "ISO-8859-1")+"."+prefix); OutputStream out = response.getOutputStream(); out.write(bys); out.close(); }catch (Exception e){ e.printStackTrace(); } }