| 描述： |
> 某赛某题
**此系列题目均收集自互联网，且进行了深度二开，直接搜答案提交是不行的**
```
router.post('/uploadfile', async (ctx, next) => {
const file = ctx.request.body.files.file;
if (!fs.existsSync(file.path)) {
return ctx.body = "Error";
}
if(file.path.toString().search("/dev/fd") != -1){
file.path="/dev/null"
}
const reader = fs.createReadStream(file.path);
let fileId = crypto.createHash('md5').update(file.name + Date.now() + SECRET).digest("hex");
let filePath = path.join(__dirname, 'upload/') + fileId
const upStream = fs.createWriteStream(filePath);
reader.pipe(upStream)
return ctx.body = "Upload success ~, your fileId is here：" + fileId;
});
router.get('/downloadfile/:fileId', async (ctx, next) => {
let fileId = ctx.params.fileId;
ctx.attachment(fileId);
try {
await send(ctx, fileId, { root: __dirname + '/upload' });
}catch(e){
return ctx.body = "no_such_file_~"
}
});
```
侵删 |
