后台返回文件流，监听文件下载结束

刺骨的言语ヽ痛彻心扉 2021-12-23 13:51 311阅读 0赞

**1、后台正常返回流即可**

@RequestMapping(value = "/download/fileword", method = RequestMethod.GET)
    public void downLoad(HttpServletResponse response) {
            try (InputStream in = new FileInputStream(“G://test.docx”);){
                //String gFileName = URLEncoder.encode(fileName, "UTF-8");
                //如进行下载名为：文件（3）.txt，下载时显示名为：文件+（3）.txt --空格变为了+号
                //解决办法如下
                //String dFileName = gFileName.replaceAll("\\+", "%20");
                //设置输出的格式
                response.reset();	//去除前后空格
                //激活浏览器弹出窗口
                //response.setContentType("application/x-msdownload");
                //浏览器弹出窗口显示的文件名
                //response.addHeader("Content-Disposition", "attachment;filename="+dFileName);
                byte[] b = new byte[1024];
                int len;
                while ((len = in.read(b)) > 0){
                    response.getOutputStream().write(b, 0, len);
                }
               // File file = new File(WordText.fileNew);
               // file.delete();
            } catch (Exception e){
                e.printStackTrace();
            }
    
        }

**2、前台js代码**