重写POST upload/路由基本实现单文件上传并重命名的功能

.gitignore

@@ -1,3 +1,5 @@
+upload/
+
 # ---> Node
 # Logs
 logs

config.js

@@ -3,4 +3,7 @@ module.exports = {
     SERVER_HOST: process.env.HOST || 'localhost',
     SERVER_PORT: process.env.PORT || '3000',
     MONGODB_URL: process.env.MONGDB || 'mongodb://localhost/data',
+    TEMP_PATH: '/tmp',
+    SAVE_PATH: 'upload',
+    UPLOAD_SIZE_LIMIT: 1024,
 }

package.json

@@ -15,9 +15,12 @@
     "author": "Zhao Xin <7176466@qq.com>",
     "license": "MIT",
     "dependencies": {
+        "bcrypt": "^5.0.1",
         "dotenv": "^16.0.1",
         "express": "^4.18.1",
+        "md5-file": "^5.0.0",
         "mongoose": "^6.5.3",
+        "multer": "^1.4.5-lts.1",
         "pug": "^3.0.2"
     },
     "devDependencies": {

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) => {
+const upload = multer({ dest: TEMP_PATH, limits: { fileSize: UPLOAD_SIZE_LIMIT } })
-    res.sendStatus(201)
+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",
- */

views/index.pug

@@ -9,8 +9,17 @@ html(lang='zh')
         title 文件分享服务器
     body
         h1 文件分享服务器
-        if uploaded
+        if file
-            p= uploaded
+            section
+                h2 上传成功
+                ul
+                    li id #{file.id}
+                    li md5 #{file.md5}
+                    li size #{file.size} bytes
+                    li encoding #{file.encoding}
+                    li mimetype #{file.mimetype}
+                    li filename #{file.filename}
+                    li password '#{file.password}'
         form(method='POST' action='/upload' enctype='multipart/form-data')
             label(for='file_input') 文件
             input(id='file_input' name='file' type='file' required)