为解决完：

1、user_message_system附件显示问题
2、issue回复添加附件问题

app/controllers/issues_controller.rb

@@ -137,6 +137,7 @@ class IssuesController < ApplicationController
         end
       end
     # end
+    @jour_reply = Journal.new
     @journals = @issue.journals.includes(:user, :details).reorder("#{Journal.table_name}.id ASC").all
     @journals.each_with_index {|j,i| j.indice = i+1}
     @journals.reject!(&:private_notes?) unless User.current.allowed_to?(:view_private_notes, @issue.project)
@@ -153,6 +154,7 @@ class IssuesController < ApplicationController
 
     @project_base_tag = (params[:project_id] || @issue.project) ? 'base_projects':'base'#by young
     @available_watchers = (@issue.project.users.sort + @issue.watcher_users).uniq
+    @journal = Journal.new(:journalized => @issue)
 
     respond_to do |format|
       format.html {
@@ -401,6 +403,7 @@ class IssuesController < ApplicationController
       jour.user_id = User.current.id
       jour.notes = params[:notes]
       jour.journalized = @issue
+      jour.save_attachments(params[:attachments])
       jour.save
       user_activity = UserActivity.where("act_type='Issue' and act_id =#{@issue.id}").first
       user_activity.updated_at = jour.created_on

app/controllers/system_messages_controller.rb

@@ -1,4 +1,5 @@
 class SystemMessagesController < ApplicationController
+
   # before_filter :message_author, :only => [:show]
   #
   # def message_author
@@ -41,6 +42,7 @@ class SystemMessagesController < ApplicationController
     @system_messages.description = params[:system_message][:description]
     @system_messages.subject = params[:system_message][:subject]
     @system_messages.user_id = User.current.id
+    @system_messages.save_attachments(params[:attachments])
     respond_to do |format|
       if @system_messages.save
         format.html {redirect_to user_system_messages_path(User.current)}

app/controllers/users_controller.rb

@@ -55,6 +55,7 @@ class UsersController < ApplicationController
   before_filter :recorded_visitor, :only => [:show,:user_fanslist,:user_watchlist,:user_visitorlist]
 
   helper :sort
+  helper :attachments
   include SortHelper
   helper :custom_fields
   include CustomFieldsHelper
@@ -63,6 +64,7 @@ class UsersController < ApplicationController
   include GitlabHelper
   include UserScoreHelper
 
+
   include PollHelper
   helper :user_score
   helper :journals

app/models/journal.rb

@@ -31,9 +31,8 @@ class Journal < ActiveRecord::Base
   #has_many :forge_acts, :class_name => 'ForgeActivity',:as =>:forge_act ,:dependent => :destroy 评论不应该算入
   # 被ForgeMessage虚拟关联
   has_many :forge_messages, :class_name => 'ForgeMessage',:as =>:forge_message ,:dependent => :destroy
-
   has_many :at_messages, as: :at_message, dependent: :destroy
-
+  acts_as_attachable
   attr_accessor :indice
 
   acts_as_event :title =>Proc.new {|o| status = ((s = o.new_status) ? " (#{s})" : nil); "#{o.issue.tracker} ##{o.issue.project_index}#{status}: #{o.issue.subject}" },

app/models/system_message.rb

@@ -7,6 +7,7 @@ class SystemMessage < ActiveRecord::Base
   validates_length_of :description, maximum: 10000
 
   has_many :message_alls, :class_name => 'MessageAll',:as =>:message,  :dependent => :destroy
+  acts_as_attachable
 
   # 系统消息放置总消息列表
   after_create :add_system_message

app/views/admin/messages.html.erb

@@ -19,6 +19,15 @@
       <div>
         <p id="content_notice_span" class="ml55"></p>
       </div>
+
+        <div class="mt10">
+          <div class="fl" id="topic_attachments">
+            <%= render :partial => 'attachments/form', :locals => {:container => @admin_messages} %>
+          </div>
+        </div>
+
+      <div class="cl"></div>
+
       <div class="actions">
         <%= link_to l(:label_submit), "javascript:void(0)", :class => "btn_message_free", :onclick => "system_message_editor.sync();submit_message();" %>
       </div>

app/views/attachments/_issue_reply.html.erb

@@ -0,0 +1,31 @@
+
+<span class="add_attachment">
+
+  <a href="javascript:void(0);" class="AnnexBtn fl" style= "<%= ie8? ? 'display:none' : ''%>"  :onclick=>"$('#_file').click();">上传附件</a>
+  <%= file_field_tag 'attachments[dummy][file]',
+                     :id => "_file",
+                     :class => 'file_selector',
+                     :multiple => true,
+                     :onchange => "addInputFiles_board(this, '#{container.id}');",
+                     :style => 'display:none',
+                     :data => {
+                             :max_file_size => Setting.attachment_max_size.to_i.kilobytes,
+                             :max_file_size_message => l(:error_attachment_too_big, :max_size => number_to_human_size(Setting.attachment_max_size.to_i.kilobytes)),
+                             :max_concurrent_uploads => Redmine::Configuration['max_concurrent_ajax_uploads'].to_i,
+                             :upload_path => uploads_path(:format => 'js'),
+                             :description_placeholder => l(:label_optional_description),
+                             :field_is_public => l(:field_is_public),
+                             :are_you_sure => l(:text_are_you_sure),
+                             :file_count => l(:label_file_count),
+                             :delete_all_files => l(:text_are_you_sure_all),
+                             :lebel_file_uploding => l(:lebel_file_uploding)} %>
+  <% if container.nil? %>
+    <span id="upload_file_count" :class="c_grey"><%= l(:label_no_file_uploaded) %></span>
+  <% end %>
+</span>
+
+<% content_for :header_tags do %>
+    <%= javascript_include_tag 'attachments' %>
+<% end %>
+
+

app/views/boards/show.html.erb

@@ -1,3 +1,4 @@
+
 <style type="text/css">
     div.talk_new .ke-container{margin-left:2px;}
     .break_word {width:100%;}

app/views/issues/_issue_replies.html.erb

@@ -27,6 +27,10 @@
             <% end %>
             <P><%= reply.notes.html_safe %></P>
           </div>
+          <% if reply.attachments.any? %>
+            <a href="javascript:void(0)" class="link_img fl"><%= link_to_attachment_project reply, :thumbnails => true %></a><br/>
+            <div class="cl"></div>
+          <% end %>
           <div style="margin-top: 7px">
             <%= format_time(reply.created_on) %>
             <div class="fr" id="reply_edit_menu_<%= reply.id%>" style="display: none">
@@ -70,6 +74,10 @@
           <div class="cl"></div>
           <textarea placeholder="有问题或有建议，请直接给我留言吧！" style="display: none" nhname='new_message_textarea_<%= @issue.id %>' name="notes"></textarea>
           <div class="cl"></div>
+          <div class="mt10 fl">
+            <%= render :partial => 'attachments/form_course', :locals => {:container => @issue} %>
+          </div>
+          <div class="cl"></div>
           <span nhname='contentmsg_<%= @issue.id %>' class="fl"></span>
           <a id="new_message_submit_btn_<%= @issue.id %>" href="javascript:void(0)" class="blue_n_btn fr" style="display:none;margin-top:6px;">发送</a>
           <div class="cl"></div>

app/views/users/user_system_messages.html.erb

@@ -18,6 +18,17 @@
             </p>
           </div>
           <div class="cl"></div>
+          <% if  system_message.attachments.any? %>
+              <div class=" fl" style="width: 600px">
+                <% if system_message.attachments.any?%>
+                    <%# options = {:author => true, :deletable => @memo.deleted_attach_able_by?(User.current) } %>
+                    <%= link_to_attachment_project system_message, :thumbnails => false %>
+                    <%#= link_to_attachments_course system_message, :author => false %>
+                <% end %>
+              </div>
+
+          <% end %>
+          <div class="cl"></div>
           <p class="homepagePostDeadline">发布时间：<%= format_time(system_message.created_at) %></p>
         </div>
         <div class="cl"></div>