File.delete上的Ruby（Errno:：EACCES）-以前的解决方案不'；行不通

我的问题与这个问题的海报完全相同：。与他不同，解决方案中为他提供的更改对我不起作用

这是我的代码，这是一个压缩算法，我想删除原始文件：

uncompressed_file = File.new(Rails.root + filepath)
compressed_file = File.new(Rails.root + "#{filepath[0..filepath.size - 1]}.gz", "w+b")
file_writer = Zlib::GzipWriter.new(compressed_file)

buf = ""
File.open(uncompressed_file, "rb") do | uncompressed |
  while uncompressed.read(4096, buf)
    file_writer << buf
  end
  file_writer.close
end    

begin      
  files_changed_by_chmod = File.chmod(0777, uncompressed_file)
rescue
  puts "Something happened"
end    
puts "Number of files changed by CHMOD : " + files_changed_by_chmod.to_s
File.delete(uncompressed_file)
File.rename(Rails.root + "#{filepath[0..filepath.size - 1]}.gz", Rails.root + filepath)

---

我想这可能与你没有正确关闭文件有关。我冒昧地重写了你的代码，没有chmod的东西（我认为这是不必要的）

filename=
filename_gz=filename+“.gz”
filepath=Rails.root+文件名
filepath\u gz=Rails.root+filename\u gz
#gzip文件
buffer=“”
File.open（filepath）do | File|
Zlib:：GzipWriter.open（filepath_gz）do|gz|
while file.read（4096，缓冲区）
gz Hi Sascha，非常感谢您的回复。它看起来非常优雅，代码确实允许我删除原始文件——但是，它会导致压缩文件失去完整性（在我对其进行加密、解密并再次解压缩之后）。我将用代码的其余部分更新原始问题。很高兴我至少可以帮助解决文件删除问题。事实证明，代码中的其他内容完全导致了完整性崩溃的问题。实际上，正是这个针对删除问题的修复程序暴露了另一个问题（它与路径有关）。再次感谢萨沙。
def inflate_attachment(filepath)
    compressed_file = File.new(Rails.root + filepath)

    File.open(compressed_file, "rb") do | compressed |
      File.open(Rails.root + "#{filepath[0..filepath.size - 7]}_FULL.enc", 'w+b') do | decompressed |
        gz = Zlib::GzipReader.new(compressed)
        result = gz.read
        decompressed.write(result)
        gz.close
      end
    end
  end

def encrypt_attachment(filepath, cipher)
    unencrypted_file = File.new(Rails.root + filepath)     
    encrypted_file = File.new(Rails.root + "#{filepath[0..filepath.size - 1]}.enc", "w")

    buf = ""
    File.open(encrypted_file, "wb") do |outf|
      File.open(unencrypted_file, "rb") do |inf|
        while inf.read(4096, buf)
          outf << cipher.update(buf)
        end
        outf << cipher.final
      end
    end
  end

def decrypt_attachment(filepath, key, iv)
    cipher = OpenSSL::Cipher.new(ENCRYPTION_TYPE)
    cipher.decrypt
    cipher.key = key
    cipher.iv = iv

    encrypted_file = File.new(Rails.root + filepath)  
    decrypted_file = File.new(Rails.root + "#{filepath[0..filepath.size - 5]}.dec", "w")

    buf = ""
    File.open(decrypted_file, "wb") do |outf|
      File.open(encrypted_file, "rb") do |inf|
        while inf.read(4096, buf)
          outf << cipher.update(buf)
        end
        outf << cipher.final
      end
    end
  end

filename = <your sourcefilename goes here>
filename_gz = filename + ".gz"

filepath = Rails.root + filename
filepath_gz = Rails.root + filename_gz

# gzip the file
buffer = ""
File.open(filepath) do |file|
  Zlib::GzipWriter.open(filepath_gz) do |gz|
    while file.read(4096, buffer)
      gz << buffer
    end
  end
end

# moves the filepath_gz to filepath (overwriting the original file in the process!)
FileUtils.mv(filepath_gz, filepath)