微信開發工具回傳正常

{ code: 2, msg: '無效的檔案' }

微信客戶端回傳

Bad Gateway! The proxy server received an invalid response from an
upstream server.

apache

httpd-ssl.conf

<VirtualHost _default_:443>

  ProxyPass /mina http://127.0.0.1:3000
  ProxyPassReverse /mina http://127.0.0.1:3000

  SetEnv force-proxy-request-1.0 1
  SetEnv proxy-nokeepalive 1

</VirtualHost>

node

#koa 框架

koa-multer 中間件，處理上傳檔案

當檔案過大或類型錯誤時，拋出錯誤

處理錯誤中間件

async function errorHandler (ctx, next) {
  try {
    await next()
  }
  catch (err) {
    let msg = parseError(err)
    ctx.body = { code: 2, msg }
    ctx.type = 'application/json'
  }
}