使用 Node 实现一个文件上传接口

pnpm install express multer

const express = require('express');
const multer  = require('multer');

// 设置存储配置
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    cb(null, 'uploads/') // 确保这个文件夹已经存在
  },
  filename: function (req, file, cb) {
    console.log(1, file);
    cb(null, file.originalname)
  }
})

const upload = multer({ storage: storage })

const app = express();

// 设置跨域访问
app.use(function(req, res, next) {
    res.header("Access-Control-Allow-Origin", "*");
    res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
    next();
});

// 单个文件上传的接口
// app.post('/upload', upload.single('file'), (req, res) => {
app.post('/upload', upload.array('file'), (req, res) => {
    if (!req.file) {
        return res.status(400).send('No files were uploaded.');
    }

    res.send('File uploaded successfully');
});

const port = 3000;
app.listen(port, () => {
    console.log(`Server is running on http://localhost:${port}`);
});