diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index 79047b516..22af22831 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -1,261 +1,261 @@
-#coding=utf-8
-#
-#  文件上传
-class AttachmentsController < ApplicationController
-  before_action :require_login, :check_auth, except: [:show, :preview_attachment, :get_file]
-  before_action :find_file, only: %i[show destroy]
-  before_action :attachment_candown, only: [:show]
-  skip_before_action :check_sign, only: [:show, :create]
-
-  include ApplicationHelper
-
-  def show
-    # 1. 优先跳到cdn
-    # 2. 如果没有cdn，send_file
-    if @file.cloud_url.present?
-      update_downloads(@file)
-      redirect_to @file.cloud_url and return
-    end
-
-    type_attachment = params[:disposition] || "attachment"
-    if type_attachment == "inline"
-      send_file absolute_path(local_path(@file)),filename: @file.title, disposition: 'inline',type: 'application/pdf'
-    elsif type_attachment == "MP4"
-      send_file_with_range absolute_path(local_path(@file)), disposition: 'inline', type: "video/mp4", range: true
-    else
-      send_file(absolute_path(local_path(@file)), filename: @file.title,stream:false, type: @file.content_type.presence || 'application/octet-stream')
-    end
-    update_downloads(@file)
-  end
-
-
-  def get_file
-    normal_status(-1, "参数缺失") if params[:download_url].blank?
-    url = URI.encode(params[:download_url].to_s.gsub("http:", "https:"))
-    if url.starts_with?(base_url)
-      domain  = GiteaService.gitea_config[:domain]
-      api_url = GiteaService.gitea_config[:base_url]
-      url = url.split(base_url)[1].gsub("api", "repos").gsub('?filepath=', '/').gsub('&', '?')
-      request_url = [domain, api_url, url, "?ref=#{params[:ref]}&access_token=#{current_user&.gitea_token}"].join
-      response = Faraday.get(request_url)
-      filename = url.to_s.split("/").pop()
-    else
-      response = Faraday.get(url)
-      filename = params[:download_url].to_s.split("/").pop()
-    end
-    send_data(response.body.force_encoding("UTF-8"),  filename: filename, type: "application/octet-stream", disposition: 'attachment')
-  end
-
-  def create
-    # 1. 本地存储
-    # 2. 上传到云
-    begin
-      upload_file = params["file"] || params["#{params[:file_param_name]}"]# 这里的file_param_name是为了方便其他插件名称
-      uid_logger("#########################file_params####{params["#{params[:file_param_name]}"]}")
-      raise "未上传文件" unless upload_file
-
-      folder = file_storage_directory
-      raise "存储目录未定义" unless folder.present?
-
-      month_folder = current_month_folder
-      save_path = File.join(folder, month_folder)
-
-      ext = file_ext(upload_file.original_filename)
-
-      local_path, digest = file_save_to_local(save_path, upload_file.tempfile, ext)
-
-      content_type = upload_file.content_type.presence || 'application/octet-stream'
-
-      # remote_path = file_save_to_ucloud(local_path[folder.size, local_path.size], local_path, content_type)
-      remote_path = nil # TODO 暂时本地上传，待域名配置后方可上传至云端
-
-      logger.info "local_path: #{local_path}"
-      logger.info "remote_path: #{remote_path}"
-
-
-      disk_filename = local_path[save_path.size + 1, local_path.size]
-      #存数据库
-      #
-      @attachment = Attachment.where(disk_filename: disk_filename,
-                                     author_id: current_user.id,
-                                     cloud_url: remote_path).first
-      if @attachment.blank?
-        @attachment = Attachment.new
-        @attachment.filename = upload_file.original_filename
-        @attachment.disk_filename = local_path[save_path.size + 1, local_path.size]
-        @attachment.filesize = upload_file.tempfile.size
-        @attachment.content_type = content_type
-        @attachment.digest = digest
-        @attachment.author_id = current_user.id
-        @attachment.disk_directory = month_folder
-        @attachment.cloud_url = remote_path
-        @attachment.save!
-      else
-        logger.info "文件已存在，id = #{@attachment.id}, filename = #{@attachment.filename}"
-      end
-
-      render_json
-    rescue => e
-      uid_logger_error(e.message)
-      tip_exception(e.message)
-    end
-  end
-
-  def destroy
-    begin
-      @file_path = absolute_path(local_path(@file))
-      #return normal_status(403, "") unless @file.author == current_user
-      @file.destroy!
-
-      delete_file(@file_path)
-      normal_status("删除成功")
-    rescue Exception => e
-      uid_logger_error(e.message)
-      tip_exception(e.message)
-      raise ActiveRecord::Rollback
-    end
-  end
-
-  # 附件为视频时，点击播放
-  def preview_attachment
-    attachment = Attachment.find_by(id: params[:id])
-    dir_path = "#{Rails.root}/public/preview"
-    Dir.mkdir(dir_path) unless Dir.exist?(dir_path)
-    if params[:status] == "preview"
-      if system("cp -r #{absolute_path(local_path(attachment))} #{dir_path}/")
-        render json: {status: 1, url: "/preview/#{attachment.disk_filename}"}
-      else
-        normal_status(-1, "出现错误，请稍后重试")
-      end
-    else
-      if system("rm -rf #{dir_path}/#{attachment.disk_filename}")
-        normal_status(1, "操作成功")
-      else
-        normal_status(-1, "出现错误，请稍后重试")
-      end
-    end
-  end
-
-  private
-  def find_file
-    @file =
-      if params[:type] == 'history'
-        AttachmentHistory.find params[:id]
-      else
-        Attachment.find params[:id]
-      end
-  end
-
-  def delete_file(file_path)
-    File.delete(file_path) if File.exist?(file_path)
-  end
-
-  def current_month_folder
-    date = Time.now
-    "#{date.year}/#{date.month.to_s.rjust(2, '0')}"
-  end
-
-  def file_ext(file_name)
-    ext = ''
-    exts = file_name.split(".")
-    if exts.size > 1
-      ext = ".#{exts.last}"
-    end
-    ext
-  end
-
-  def file_save_to_local(save_path, temp_file, ext)
-    unless Dir.exists?(save_path)
-      FileUtils.mkdir_p(save_path) ##不成功这里会抛异常
-    end
-
-    digest = md5_file(temp_file)
-    digest = "#{digest}_#{(Time.now.to_f * 1000).to_i}"
-    local_file_path = File.join(save_path, digest) + ext
-    save_temp_file(temp_file, local_file_path)
-
-    [local_file_path, digest]
-  end
-
-  def save_temp_file(temp_file, save_file_path)
-    File.open(save_file_path, 'wb') do |f|
-      temp_file.rewind
-      while (buffer = temp_file.read(8192))
-        f.write(buffer)
-      end
-    end
-  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
-
-  def file_save_to_ucloud(path, file, content_type)
-    ufile = Gitlink::Ufile.new(
-        ucloud_public_key: edu_setting('public_key'),
-        ucloud_private_key: edu_setting('private_key'),
-        ucloud_public_read: true,
-        ucloud_public_bucket: edu_setting('public_bucket'),
-        ucloud_public_bucket_host: edu_setting('public_bucket_host'),
-        ucloud_public_cdn_host: edu_setting('public_cdn_host'),
-    )
-    File.open(file) do |f|
-      ufile.put(path, f, 'Content-Type' => content_type)
-    end
-    edu_setting('public_cdn_host') + "/" + path
-  end
-
-  def attachment_candown
-    unless current_user.admin? || current_user.business?
-      candown = true
-      unless params[:type] == 'history'
-        if @file.container && current_user.logged?
-          if @file.container.is_a?(Issue)
-            course = @file.container.project
-            candown = course.member?(current_user) || course.is_public
-          elsif @file.container.is_a?(Journal)
-            course = @file.container.issue.project
-            candown = course.member?(current_user)
-          else
-            course = nil
-          end
-          tip_exception(403, "您没有权限进入") if course.present? && !candown
-          tip_exception(403, "您没有权限进入") if @file.container.is_a?(ApplyUserAuthentication)
-        end
-      end
-    end
-  end
-
-  def send_file_with_range(path, options = {})
-    logger.info("########request.headers: #{request.headers}")
-    logger.info("########request.headers: #{File.exist?(path)}")
-
-    if File.exist?(path)
-      size = File.size(path)
-      logger.info("########request.headers: #{request.headers}")
-      if !request.headers["Range"]
-        status_code = 200 # 200 OK
-        offset = 0
-        length = File.size(path)
-      else
-        status_code = 206 # 206 Partial Content
-        bytes = Rack::Utils.byte_ranges(request.headers, size)[0]
-        offset = bytes.begin
-        length = bytes.end - bytes.begin
-      end
-      response.header["Accept-Ranges"] = "bytes"
-      response.header["Content-Range"] = "bytes #{bytes.begin}-#{bytes.end}/#{size}" if bytes
-      response.header["status"] = status_code
-
-      send_data IO.binread(path, length, offset), options
-    else
-      raise ActionController::MissingFile, "Cannot read file #{path}."
-    end
-  end
-
-end
+#coding=utf-8
+#
+#  文件上传
+class AttachmentsController < ApplicationController
+  before_action :require_login, :check_auth, except: [:show, :preview_attachment, :get_file]
+  before_action :find_file, only: %i[show destroy]
+  before_action :attachment_candown, only: [:show]
+  skip_before_action :check_sign, only: [:show, :create]
+
+  include ApplicationHelper
+
+  def show
+    # 1. 优先跳到cdn
+    # 2. 如果没有cdn，send_file
+    if @file.cloud_url.present?
+      update_downloads(@file)
+      redirect_to @file.cloud_url and return
+    end
+
+    type_attachment = params[:disposition] || "attachment"
+    if type_attachment == "inline"
+      send_file absolute_path(local_path(@file)),filename: @file.title, disposition: 'inline',type: 'application/pdf'
+    elsif type_attachment == "MP4"
+      send_file_with_range absolute_path(local_path(@file)), disposition: 'inline', type: "video/mp4", range: true
+    else
+      send_file(absolute_path(local_path(@file)), filename: @file.title,stream:false, type: @file.content_type.presence || 'application/octet-stream')
+    end
+    update_downloads(@file)
+  end
+
+
+  def get_file
+    normal_status(-1, "参数缺失") if params[:download_url].blank?
+    url = URI.encode(params[:download_url].to_s.gsub("http:", "https:"))
+    if url.starts_with?(base_url)
+      domain  = GiteaService.gitea_config[:domain]
+      api_url = GiteaService.gitea_config[:base_url]
+      url = url.split(base_url)[1].gsub("api", "repos").gsub('?filepath=', '/').gsub('&', '?')
+      request_url = [domain, api_url, url, "?ref=#{params[:ref]}&access_token=#{current_user&.gitea_token}"].join
+      response = Faraday.get(request_url)
+      filename = url.to_s.split("/").pop()
+    else
+      response = Faraday.get(url)
+      filename = params[:download_url].to_s.split("/").pop()
+    end
+    send_data(response.body.force_encoding("UTF-8"),  filename: filename, type: "application/octet-stream", disposition: 'attachment')
+  end
+
+  def create
+    # 1. 本地存储
+    # 2. 上传到云
+    begin
+      upload_file = params["file"] || params["#{params[:file_param_name]}"]# 这里的file_param_name是为了方便其他插件名称
+      uid_logger("#########################file_params####{params["#{params[:file_param_name]}"]}")
+      raise "未上传文件" unless upload_file
+
+      folder = file_storage_directory
+      raise "存储目录未定义" unless folder.present?
+
+      month_folder = current_month_folder
+      save_path = File.join(folder, month_folder)
+
+      ext = file_ext(upload_file.original_filename)
+
+      local_path, digest = file_save_to_local(save_path, upload_file.tempfile, ext)
+
+      content_type = upload_file.content_type.presence || 'application/octet-stream'
+
+      # remote_path = file_save_to_ucloud(local_path[folder.size, local_path.size], local_path, content_type)
+      remote_path = nil # TODO 暂时本地上传，待域名配置后方可上传至云端
+
+      logger.info "local_path: #{local_path}"
+      logger.info "remote_path: #{remote_path}"
+
+
+      disk_filename = local_path[save_path.size + 1, local_path.size]
+      #存数据库
+      #
+      @attachment = Attachment.where(disk_filename: disk_filename,
+                                     author_id: current_user.id,
+                                     cloud_url: remote_path).first
+      if @attachment.blank?
+        @attachment = Attachment.new
+        @attachment.filename = upload_file.original_filename
+        @attachment.disk_filename = local_path[save_path.size + 1, local_path.size]
+        @attachment.filesize = upload_file.tempfile.size
+        @attachment.content_type = content_type
+        @attachment.digest = digest
+        @attachment.author_id = current_user.id
+        @attachment.disk_directory = month_folder
+        @attachment.cloud_url = remote_path
+        @attachment.save!
+      else
+        logger.info "文件已存在，id = #{@attachment.id}, filename = #{@attachment.filename}"
+      end
+
+      render_json
+    rescue => e
+      uid_logger_error(e.message)
+      tip_exception(e.message)
+    end
+  end
+
+  def destroy
+    begin
+      @file_path = absolute_path(local_path(@file))
+      #return normal_status(403, "") unless @file.author == current_user
+      @file.destroy!
+
+      delete_file(@file_path)
+      normal_status("删除成功")
+    rescue Exception => e
+      uid_logger_error(e.message)
+      tip_exception(e.message)
+      raise ActiveRecord::Rollback
+    end
+  end
+
+  # 附件为视频时，点击播放
+  def preview_attachment
+    attachment = Attachment.find_by(id: params[:id])
+    dir_path = "#{Rails.root}/public/preview"
+    Dir.mkdir(dir_path) unless Dir.exist?(dir_path)
+    if params[:status] == "preview"
+      if system("cp -r #{absolute_path(local_path(attachment))} #{dir_path}/")
+        render json: {status: 1, url: "/preview/#{attachment.disk_filename}"}
+      else
+        normal_status(-1, "出现错误，请稍后重试")
+      end
+    else
+      if system("rm -rf #{dir_path}/#{attachment.disk_filename}")
+        normal_status(1, "操作成功")
+      else
+        normal_status(-1, "出现错误，请稍后重试")
+      end
+    end
+  end
+
+  private
+  def find_file
+    @file =
+      if params[:type] == 'history'
+        AttachmentHistory.find params[:id]
+      else
+        Attachment.find params[:id]
+      end
+  end
+
+  def delete_file(file_path)
+    File.delete(file_path) if File.exist?(file_path)
+  end
+
+  def current_month_folder
+    date = Time.now
+    "#{date.year}/#{date.month.to_s.rjust(2, '0')}"
+  end
+
+  def file_ext(file_name)
+    ext = ''
+    exts = file_name.split(".")
+    if exts.size > 1
+      ext = ".#{exts.last}"
+    end
+    ext
+  end
+
+  def file_save_to_local(save_path, temp_file, ext)
+    unless Dir.exists?(save_path)
+      FileUtils.mkdir_p(save_path) ##不成功这里会抛异常
+    end
+
+    digest = md5_file(temp_file)
+    digest = "#{digest}_#{(Time.now.to_f * 1000).to_i}"
+    local_file_path = File.join(save_path, digest) + ext
+    save_temp_file(temp_file, local_file_path)
+
+    [local_file_path, digest]
+  end
+
+  def save_temp_file(temp_file, save_file_path)
+    File.open(save_file_path, 'wb') do |f|
+      temp_file.rewind
+      while (buffer = temp_file.read(8192))
+        f.write(buffer)
+      end
+    end
+  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
+
+  def file_save_to_ucloud(path, file, content_type)
+    ufile = Gitlink::Ufile.new(
+        ucloud_public_key: edu_setting('public_key'),
+        ucloud_private_key: edu_setting('private_key'),
+        ucloud_public_read: true,
+        ucloud_public_bucket: edu_setting('public_bucket'),
+        ucloud_public_bucket_host: edu_setting('public_bucket_host'),
+        ucloud_public_cdn_host: edu_setting('public_cdn_host'),
+    )
+    File.open(file) do |f|
+      ufile.put(path, f, 'Content-Type' => content_type)
+    end
+    edu_setting('public_cdn_host') + "/" + path
+  end
+
+  def attachment_candown
+    unless current_user.admin? || current_user.business?
+      candown = true
+      unless params[:type] == 'history'
+        if @file.container && current_user.logged?
+          if @file.container.is_a?(Issue)
+            course = @file.container.project
+            candown = course.member?(current_user) || course.is_public
+          elsif @file.container.is_a?(Journal)
+            course = @file.container.issue.project
+            candown = course.member?(current_user) || course.is_public
+          else
+            course = nil
+          end
+          tip_exception(403, "您没有权限进入") if course.present? && !candown
+          tip_exception(403, "您没有权限进入") if @file.container.is_a?(ApplyUserAuthentication)
+        end
+      end
+    end
+  end
+
+  def send_file_with_range(path, options = {})
+    logger.info("########request.headers: #{request.headers}")
+    logger.info("########request.headers: #{File.exist?(path)}")
+
+    if File.exist?(path)
+      size = File.size(path)
+      logger.info("########request.headers: #{request.headers}")
+      if !request.headers["Range"]
+        status_code = 200 # 200 OK
+        offset = 0
+        length = File.size(path)
+      else
+        status_code = 206 # 206 Partial Content
+        bytes = Rack::Utils.byte_ranges(request.headers, size)[0]
+        offset = bytes.begin
+        length = bytes.end - bytes.begin
+      end
+      response.header["Accept-Ranges"] = "bytes"
+      response.header["Content-Range"] = "bytes #{bytes.begin}-#{bytes.end}/#{size}" if bytes
+      response.header["status"] = status_code
+
+      send_data IO.binread(path, length, offset), options
+    else
+      raise ActionController::MissingFile, "Cannot read file #{path}."
+    end
+  end
+
+end