实现了文件下载路由

server.js

@@ -45,6 +45,18 @@ app.post('/upload', upload.single('file'), async (req, res) => {
     console.table(file)
     res.status(201).render('index', { file })
 })
+app.get('/file/:id', async (req, res) => {
+    const file = await Fileshare.findByIdAndUpdate(req.params.id, { $inc: { downloads: 1 } })
+    if (file) {
+        const file_path = path.join(SAVE_PATH, file.md5)
+        if (file.password == '') {
+            res.status(200).download(file_path, file.filename)
+        } else {
+        }
+    } else {
+        res.sendStatus(404)
+    }
+})
 const server = app.listen(SERVER_PORT, SERVER_HOST, () => {
     console.info(`server is running at http://${SERVER_HOST}:${SERVER_PORT}`)
 })