Java 后端同前端交互

文件交互

上传文件到前端

@PostMapping("/packageExeParent")
    public Result packageExeParent(HttpServletResponse response, @RequestBody JSONObject jsonObject) throws IOException {
//        response.setHeader("content-type","application/octet-stream");
        byte[] file = PackageExe.packageExe(jsonObject.getString("user_id"),"package\\ecloud_6.3.9.1_setup(20211021171044).exe");
        try (OutputStream os = response.getOutputStream()){
            os.write(file);
            os.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return Result.success();
    }

获取response的 outputStream 将加工过的 exe文件直接转为 byte 字节数组 发送即可