diff --git a/app/controllers/issue_tags_controller.rb b/app/controllers/issue_tags_controller.rb
index 82bcc2c20..3cb22b074 100644
--- a/app/controllers/issue_tags_controller.rb
+++ b/app/controllers/issue_tags_controller.rb
@@ -121,7 +121,7 @@ class IssueTagsController < ApplicationController
   private
 
   def set_project
-    @project = Project.find_by_id(params[:project_id])
+    @project = Project.find_by_identifier! params[:id]
     @repository = @project.repository
     @user = @project.owner
     normal_status(-1, "项目不存在") unless @project.present?
diff --git a/app/controllers/issues_controller.rb b/app/controllers/issues_controller.rb
index 33235b2ce..e7fabc949 100644
--- a/app/controllers/issues_controller.rb
+++ b/app/controllers/issues_controller.rb
@@ -1,6 +1,7 @@
 class IssuesController < ApplicationController
   before_action :require_login, except: [:index, :show]
-  before_action :set_project
+  before_action :find_project
+  before_action :set_user
   before_action :check_project_public, only: [:index ,:show, :copy, :index_chosen, :close_issue]
   before_action :check_issue_permission, except: [:index, :show, :index_chosen]
   before_action :set_issue, only: [:edit, :update, :destroy, :show, :copy, :index_chosen, :close_issue, :lock_issue]
@@ -341,10 +342,8 @@ class IssuesController < ApplicationController
   end
 
   private
-  def set_project
-    @project = Project.find_by_id(params[:project_id])
+  def set_user
     @user = @project.owner
-    normal_status(-1, "项目不存在") unless @project.present?
     normal_status(-1, "用户不存在") unless @user.present?
   end
 
diff --git a/app/controllers/project_trends_controller.rb b/app/controllers/project_trends_controller.rb
index 84821ba65..dcd2d4706 100644
--- a/app/controllers/project_trends_controller.rb
+++ b/app/controllers/project_trends_controller.rb
@@ -1,5 +1,5 @@
 class ProjectTrendsController < ApplicationController
-  before_action :set_project
+  before_action :find_project
   before_action :check_project_public
 
   def index
@@ -34,13 +34,6 @@ class ProjectTrendsController < ApplicationController
 
   private
 
-  def set_project
-    @project = Project.find_by_id(params[:project_id])
-    unless @project.present?
-      normal_status(-1, "项目不存在")
-    end
-  end
-
   def check_project_public
     unless @project.is_public || @project.member?(current_user) || current_user.admin?
       normal_status(-1, "您没有权限")
diff --git a/app/controllers/pull_requests_controller.rb b/app/controllers/pull_requests_controller.rb
index 655a8cdfc..83b52c8d7 100644
--- a/app/controllers/pull_requests_controller.rb
+++ b/app/controllers/pull_requests_controller.rb
@@ -343,7 +343,7 @@ class PullRequestsController < ApplicationController
   private
 
   def set_project
-    @project = Project.find_by_id(params[:project_id])
+    @project = Project.find_by_identifier! params[:id]
     @repository = @project.repository
     @user = @project.owner
     normal_status(-1, "项目不存在") unless @project.present?
diff --git a/app/controllers/versions_controller.rb b/app/controllers/versions_controller.rb
index 2ea398f60..ffedc0aa3 100644
--- a/app/controllers/versions_controller.rb
+++ b/app/controllers/versions_controller.rb
@@ -1,6 +1,6 @@
 class VersionsController < ApplicationController
   before_action :require_login
-  before_action :set_project
+  before_action :find_project
   before_action :check_issue_permission, except: [:show, :index]
   before_action :set_version, only: [:edit, :update, :destroy, :show,:update_status]
 
@@ -129,13 +129,6 @@ class VersionsController < ApplicationController
 
   private
 
-  def set_project
-    @project = Project.find_by_id(params[:project_id])
-    unless @project.present?
-      normal_status(-1, "项目不存在")
-    end
-  end
-
   def check_issue_permission
     unless @project.member?(current_user) || current_user.admin?
       normal_status(-1, "您没有权限")