Rails 4 升级旧会话的 JSON::ParseError [英] Rails 4 upgrade JSON::ParseError for old sessions

问题描述

从 Rails 3.2 升级到 Rails 4.1.4 后，使用现有会话(来自较旧的 Rails 3.2 版本)访问应用程序会导致内部服务器错误.回溯:

After upgrading to Rails 4.1.4 from Rails 3.2, accessing the application with an existing session (from the older Rails 3.2 version) causes an internal server error. backtrace:

JSON::ParserError - 795: unexpected token at {
I"session_id:ETI"%fa78a4ee07ac952c9b034ebc6199f30b;':
  /Users/.../.rvm/rubies/ruby-2.1.0/lib/ruby/2.1.0/json/common.rb:155:in `parse'
  actionpack (4.1.4) lib/action_dispatch/middleware/cookies.rb:388:in `load'
  actionpack (4.1.4) lib/action_dispatch/middleware/cookies.rb:428:in `deserialize'
  actionpack (4.1.4) lib/action_dispatch/middleware/cookies.rb:183:in `verify_and_upgrade_legacy_signed_message'
  actionpack (4.1.4) lib/action_dispatch/middleware/cookies.rb:550:in `[]'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/cookie_store.rb:114:in `get_cookie'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/cookie_store.rb:90:in `block in unpacked_cookie_data'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `stale_session_check!'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/cookie_store.rb:89:in `unpacked_cookie_data'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/cookie_store.rb:83:in `block in extract_session_id'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/abstract_store.rb:51:in `stale_session_check!'
  actionpack (4.1.4) lib/action_dispatch/middleware/session/cookie_store.rb:82:in `extract_session_id'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:49:in `block in []'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:48:in `[]'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:70:in `id'
  rack (1.5.2) lib/rack/session/abstract/id.rb:282:in `current_session_id'
  rack (1.5.2) lib/rack/session/abstract/id.rb:288:in `session_exists?'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:152:in `exists?'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:172:in `load_for_read!'
  actionpack (4.1.4) lib/action_dispatch/request/session.rb:89:in `[]'
  warden (1.2.3) lib/warden/session_serializer.rb:30:in `fetch'
  warden (1.2.3) lib/warden/proxy.rb:212:in `user'
  warden (1.2.3) lib/warden/proxy.rb:318:in `_perform_authentication'
  warden (1.2.3) lib/warden/proxy.rb:104:in `authenticate'
  warden (1.2.3) lib/warden/proxy.rb:114:in `authenticate?'
  devise (3.2.4) lib/devise/rails/routes.rb:460:in `block in constraints_for'
  actionpack (4.1.4) lib/action_dispatch/routing/mapper.rb:38:in `block in matches?'
  actionpack (4.1.4) lib/action_dispatch/routing/mapper.rb:36:in `matches?'
  actionpack (4.1.4) lib/action_dispatch/routing/mapper.rb:45:in `call'
  actionpack (4.1.4) lib/action_dispatch/journey/router.rb:71:in `block in call'
  actionpack (4.1.4) lib/action_dispatch/journey/router.rb:59:in `call'
  actionpack (4.1.4) lib/action_dispatch/routing/route_set.rb:678:in `call'
  ...

我尝试更改会话 cookie 密钥名称，但它似乎卡在 session_id 上.

I tried to change the session cookie key name, but it seems to be stuck on session_id.

# initializers/session_store.rb
MyApp::Application.config.session_store :cookie_store, key: 'myapp_session'

请帮忙！一个很好的解决方案是在所有会话 cookie 到达 rails 中间件之前删除它们，但我不知道该怎么做..

Please help! A great solution would also be to delete all session cookies before they hit the rails middleware, but i have no idea how to do that..

推荐答案

在这里找到答案:https://github.com/rails/rails/issues/15111

我的设置有

# initializers/cookie_serializer.rb
Rails.application.config.action_dispatch.cookies_serializer = :json

我改成

Rails.application.config.action_dispatch.cookies_serializer = :hybrid

这就成功了

这篇关于Rails 4 升级旧会话的 JSON::ParseError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！