mini_magick gem无法与我的ImageMagick安装一起使用 [英] mini_magick gem doesn't work with my ImageMagick install

问题描述

我通过MacPorts和mini_magick gem安装了ImageMagick，但以下脚本出现错误.我该如何解决这个问题?

I have the ImageMagick installed via MacPorts and the mini_magick gem and I get an error for the following script. How can I resolve this problem?

require 'rubygems'
require 'mini_magick'

image = MiniMagick::Image.open("input.jpg")
image.resize "100x100"
image.write  "output.jpg"



/Users/Max/.rvm/gems/ruby-1.9.3-p125/gems/mini_magick-3.4/lib/mini_magick.rb:164:in `create': MiniMagick::Invalid (MiniMagick::Invalid)
    from /Users/Max/.rvm/gems/ruby-1.9.3-p125/gems/mini_magick-3.4/lib/mini_magick.rb:73:in `read'
    from /Users/Max/.rvm/gems/ruby-1.9.3-p125/gems/mini_magick-3.4/lib/mini_magick.rb:134:in `block in open'
    from /Users/Max/.rvm/gems/ruby-1.9.3-p125/gems/mini_magick-3.4/lib/mini_magick.rb:133:in `open'
    from /Users/Max/.rvm/gems/ruby-1.9.3-p125/gems/mini_magick-3.4/lib/mini_magick.rb:133:in `open'
    from minimagick.rb:4:in `<main>'

推荐答案

如果使用Mac OS X，请尝试重新安装ImageMagick:

Try reinstall ImageMagick, if you use Mac OS X:

brew uninstall imagemagick jpeg libtiff jasper
brew install imagemagick

检查是否现在可以使用JPG格式:

For check if JPG format is now available:

identify -list format | grep JPG

这将返回可用格式JPG ...

This will return the available formats JPG...

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