npm install --save qiniu formidable

let qiniu = require('qiniu'),
 formidable = require('formidable'),
 express = require('express'),
 router = express.Router();

router.post('/qiniu', function (req, res, next) {
 let bucket = 'myblog',
 key = '',
 form = formidable.IncomingForm(),
 token, putPolicy;
 form.uploadDir = path.join(__dirname, '../../', 'public/img/upload');
 form.keepExtensions = true
 form.parse(req, function (err, fields, files) {
 if (err) {
 console.log(err);
 }
 key = files.mypic.path.split(path.sep).pop();
 putPolicy = new qiniu.rs.PutPolicy(bucket + ':' + key)
 //設置回調
 // putPolicy.callbackUrl = 'http://localhost:81/test/callback'
 // putPolicy.callbackBody = 'filename=$(fname)&filesize=$(fsize)'
 token = putPolicy.token()
 console.log('token', token)
 let extra = new qiniu.io.PutExtra()
 qiniu.io.putFile(token, key, files.mypic.path, extra, function (err, ret) {
 if (err) {
 console.log(err)
 }
 console.log('ret', ret);
 res.json({
 token: token,
 ret: ret,
 files: files,
 fields: fields
 })
 })
 })
})

router.get('/download/:key', function (req, res, next) {
 let url = 'http://xxxx.bkt.clouddn.com/' + req.params.key,
 policy = new qiniu.rs.GetPolicy();
 console.log(url);
 res.json({url: policy.makeRequest(url)})
})

router.get('/info/:key', function (req, res, next) {
 let bucket = 'myblog',
 key = req.params.key,
 client = new qiniu.rs.Client();
 client.stat(bucket, key, (err, ret) => {
 if (err) {
 console.log(err);
 }
 res.json(ret);
 })
})