Webrick使っていたけどMongrelに切り替える gem install mongrel Select which gem to install for your platform (i386-mswin32) 1. mongrel 1.1.5 (ruby) 2. mongrel 1.1.5 (java) 3. mongrel 1.1.5 (x86-mingw32) 4. mongrel 1.1.5 (x86-mswin32-60) 5. S…