今天在使用一套叫做 koahub-wemall 的现成商城源码的时候发生了一个诡异的报错，报错内容大概如下
Error: The session middleware not found
at Koahub.loadMiddlewares (/home/snowfox/code/docker/koa-shop/koahub-wemall/node_modules/koahub/app/index.js:158:27)
at Koahub.init (/home/snowfox/code/docker/koa-shop/koahub-wemall/node_modules/koahub/app/index.js:196:14)
at new Koahub (/home/snowfox/code/docker/koa-shop/koahub-wemall/node_modules/koahub/app/index.js:28:14)
at Object.<anonymous> (/home/snowfox/code/docker/koa-shop/koahub-wemall/app/index.js:13:13)
at Module._compile (module.js:660:30)
at Object.Module._extensions..js (module.js:671:10)
at Module.load (module.js:573:32)
at tryModuleLoad (module.js:513:12)
at Function.Module._load (module.js:505:3)
at Function.Module.runMain (module.js:701:10)
at startup (bootstrap_node.js:190:16)
at bootstrap_node.js:662:3
在神奇的谷歌和坑爹的百度多番搜索无果，最后的解决办法如下：
打开项目下的 app/config/middleware.config.js
module.exports = {
session: {
key: 'koahub.js'
},
static: {
dir: './www',
dynamic: true
}
}
替换成
module.exports = {
'koa-session2': {
key: 'koahub.js'
},
'koa-static-cache': {
dir: './www',
dynamic: true
}
}
问题就解决了
