vue-html5-editor图片上传显示成功，但后台获取不到数据

Question

1.前端用vue-html5-editor上传图片，显示已经上传成功

2.后台接口为3000，接口获取不到前台传来的数据
app.post('/img', function (req, res) {

// console.log(req.headers.host);
console.log(req.files);
res.send(JSON.stringify(req.files));

});

//配置服务端口
var server = app.listen(3000, '127.0.0.1',function () {

var host = server.address().address;
var port = server.address().port;
console.log('server is listening at http://%s:%s', host, port);

})

想请教一下是哪个地方出错了，谢谢