主要目的是为了上传
koa-v1 要是用 koa-multer-v0.0.2 对应的 multer < 1,所以本处需要指定版本安装
$ npm install --save koa-multer@0.0.2
Usage
var app = require('koa')()
  , koa = require('koa-router')()
  , logger = require('koa-logger')
  , json = require('koa-json')
  , views = require('koa-views')
  , onerror = require('koa-onerror');
var multer = require('koa-multer');
app.use(multer({ dest: './uploads/'}));
You can access the fields and files in the request object:
router.post('/post/formdata', function *(next) {
  console.dir(this.req.body)
  console.dir(this.req.files)
  this.body = 'this a users response!';
});
重要提示: Multer will not process any form which is not multipart/form-data
测试
$ npm test
使用Postman测试
