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我正在使用wicked_pdf，工作正常。然而，服务器似乎只为一次调用渲染/执行两次恶意代码，导致一个pdf文件。谁能告诉我为什么？服务器日志如下所示：wkhtmltopdf渲染两次？
2016-03-16T21:53:11.659341+00:00 app[web.1]: Started GET "/wpdf" for 99.99.99.99 at 2016-03-16 21:53:11 +0000
2016-03-16T21:53:11.661184+00:00 app[web.1]: Processing by SomeStoriesController#wpdf as HTML
2016-03-16T21:53:11.661632+00:00 app[web.1]: ***************WICKED***************
2016-03-16T21:53:11.663620+00:00 app[web.1]: Rendered some_stories/wpdf.html.erb (1.1ms)
2016-03-16T21:53:13.128754+00:00 heroku[router]: at=info method=GET path="/wpdf" host=xxxx.herokuapp.com request_id=3ca3a32a-2c40-4052-b7fb-8d333b7277c6 fwd="99.99.99" dyno=web.1 connect=0ms service=1477ms status=200 bytes=18490
2016-03-16T21:53:13.132369+00:00 app[web.1]: Rendered text template (0.0ms)
2016-03-16T21:53:13.132480+00:00 app[web.1]: Sent data file_name.pdf (0.5ms)
2016-03-16T21:53:13.132673+00:00 app[web.1]: Completed 200 OK in 1471ms (Views: 0.4ms | ActiveRecord: 0.0ms)
2016-03-16T21:53:13.362617+00:00 app[web.1]: Started GET "/wpdf" for 99.99.99.99 at 2016-03-16 21:53:13 +0000
2016-03-16T21:53:13.363827+00:00 app[web.1]: Processing by SomeStoriesController#wpdf as HTML
2016-03-16T21:53:13.364250+00:00 app[web.1]: ***************WICKED***************
2016-03-16T21:53:13.365987+00:00 app[web.1]: Rendered some_stories/wpdf.html.erb (1.1ms)
2016-03-16T21:53:14.468550+00:00 heroku[router]: at=info method=GET path="/wpdf" host=xxxx.herokuapp.com request_id=5b70cf38-bc29-45fd-8287-3a01b0b1372a fwd="99.99.99.99" dyno=web.1 connect=0ms service=1114ms status=200 bytes=18490
2016-03-16T21:53:14.472015+00:00 app[web.1]: Rendered text template (0.0ms)
2016-03-16T21:53:14.472110+00:00 app[web.1]: Sent data file_name.pdf (0.4ms)
2016-03-16T21:53:14.472271+00:00 app[web.1]: Completed 200 OK in 1108ms (Views: 0.3ms | ActiveRecord: 0.0ms)
同样的问题在这里。你找到什么了吗？ –