文件上传

app/controllers/shixuns_controller.rb

@@ -1105,4 +1105,16 @@ private
 		ext
 	end
 
+	def delete_file(file_path)
+		File.delete(file_path) if File.exist?(file_path)
+	end
+
+	def md5_file(temp_file)
+		md5 = Digest::MD5.new
+		temp_file.rewind
+		while (buffer = temp_file.read(8192))
+			md5.update(buffer)
+		end
+		md5.hexdigest
+	end
 end