springboot+vue导出本地可执行文件

1、前端页面增加下载链接

<a href="http://localhost:80/system/download" download="xxx.exe">下载地址</a>

　2、后端读取文件下载

 //下载文件
    @GetMapping("/system/download")
    public void download(HttpServletResponse response) {
        String filepath ="E:/file";
        File file = new File(filepath + "/xxx.exe");
        byte[] buffer = new byte[1024];
        BufferedInputStream bis = null;
        OutputStream os = null;
        try {
            //文件是否存在
            if (file.exists()) {
                //设置响应
                response.setContentType("application/octet-stream;charset=UTF-8");
                response.setCharacterEncoding("UTF-8");
                response.setHeader("Content-Disposition", "attachment; filename=xxx.exe");//写入文件具体名称
                os = response.getOutputStream();
                bis = new BufferedInputStream(new FileInputStream(file));
                while (bis.read(buffer) != -1) {
                    os.write(buffer);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (bis != null) {
                    bis.close();
                }
                if (os != null) {
                    os.flush();
                    os.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

　　3、将下载路径配置放入无需验证列表,放入SecurityConfig.java中，否则报错401

.antMatchers("/system/download").permitAll()