Question

我正在尝试在Rails应用程序中实现Cropping功能。基本上我跟随railscast。但是当它尝试裁剪图像时，请在控制台中查看。

Command :: file -b --mime '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-dffwla.jpg'
Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]' 2>/dev/null
Command :: identify -format %m '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]'
Command :: convert '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]' -crop '300 x 300 + 200 + 31 '-auto-orient -resize "500x500>" '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp20150505-19502-bwuuga'
convert: InvalidArgument `-crop': 300 x 300 + 200 + 31 -auto-orient @ error/convert.c/ConvertImageCommand/1083.
[paperclip] An error was received while processing: #<Paperclip::Error: There was an error processing the thumbnail for 98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp>
Command :: identify -format '%wx%h,%[exif:orientation]' '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]' 2>/dev/null
Command :: identify -format %m '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]'
Command :: convert '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp.jpg[0]' -crop '300 x 300 + 200 + 31 '-auto-orient -resize "100x100>" '/var/folders/rc/y5p0pv054xb20rtgwhzx5pzc0000gn/T/98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp20150505-19502-8qahjf'
convert: InvalidArgument `-crop': 300 x 300 + 200 + 31 -auto-orient @ error/convert.c/ConvertImageCommand/1083.
[paperclip] An error was received while processing: #<Paperclip::Error: There was an error processing the thumbnail for 98fc51f68e50c6db6eb4594f625b4b7a20150505-19502-qz95yp>

这里的相关代码是：

# -*- coding: utf-8 -*-
module Paperclip
  class Cropper < Thumbnail

    def transformation_command 
      if crop_command 
        r = super 
        if r.class == Array 
          r = r.join(' ') 
        end 
        crop_command + r.sub(/ -crop \S+/, '') 
      else 
        super 
      end
    end

    def crop_command
      target = @attachment.instance
      if target.cropping?
        y = target.crop_y.to_i
        x = target.crop_x.to_i
        w = target.crop_w.to_i
        h = target.crop_h.to_i

        " -crop \"#{w}x#{h}+#{x}+#{y}\""

      end 
    end
  end
end

我注意到如果我在这一行的末尾插入一个空格：

＆＃34; -crop \＆＃34;＃{w} x＃{h} +＃{x} +＃{y} \＆＃34;＆＃34;

以无限循环输入的代码。然后，如果我停止服务器并访问该页面，我会看到图像被裁剪。

我搜索了这个并找到了一些有类似问题的人。所以我看看我的crop command方法。我尝试了很多形式的格式＆＃39; crop命令，但没有成功。

这里的任何帮助都会很棒。

由于

裁剪图像 - 裁剪无效参数

0 个答案: