重写POST upload/路由基本实现单文件上传并重命名的功能

server.js

@@ -1,4 +1,9 @@
-const { SERVER_HOST, SERVER_PORT, MONGODB_URL } = require('./config')
+const { SERVER_HOST, SERVER_PORT, MONGODB_URL, TEMP_PATH, SAVE_PATH, UPLOAD_SIZE_LIMIT } = require('./config')
+const fs = require('fs')
+const path = require('path')
+const multer = require('multer')
+const bcrypt = require('bcrypt')
+const md5file = require('md5-file')
 const express = require('express')
 const mongoose = require('mongoose')
 mongoose.connect(MONGODB_URL, (error) => {
@@ -16,14 +21,26 @@ app.use(express.json())
 app.get('/', (req, res) => {
     res.render('index')
 })
-app.post('/upload', (req, res) => {
-    res.sendStatus(201)
+const upload = multer({ dest: TEMP_PATH, limits: { fileSize: UPLOAD_SIZE_LIMIT } })
+app.post('/upload', upload.single('file'), async (req, res) => {
+    const file_temp_path = path.join(TEMP_PATH, req.file.filename)
+    const md5 = await md5file(file_temp_path)
+    const file_save_path = path.join(__dirname, SAVE_PATH, md5)
+    const file = {
+        id: req.file.filename,
+        md5,
+        size: req.file.size,
+        encoding: req.file.encoding,
+        mimetype: req.file.mimetype,
+        filename: req.file.originalname,
+        password: req.body.password ? await bcrypt.hash(req.body.password, 16) : '',
+    }
+    if (!fs.existsSync(file_save_path)) {
+        fs.cpSync(file_temp_path, file_save_path) // 复制文件到UPLOAD_PATH
+    }
+    fs.unlinkSync(file_temp_path) // 删除临时文件
+    res.status(201).render('index', { file })
 })
 const server = app.listen(SERVER_PORT, SERVER_HOST, () => {
     console.info(`server is running at http://${SERVER_HOST}:${SERVER_PORT}`)
 })
-/**
- *  "bcrypt": "^5.0.1",
-    "md5-file": "^5.0.0",
-    "multer": "^1.4.5-lts.1",
- */