下载附件给出使用winrar解压的提示

app/views/student_work/index.html.erb

@@ -55,11 +55,20 @@
       <% if @is_teacher%>
           <div class="fr">
             <% if @homework.student_works.empty?%>
-                <%= link_to "附件", "javascript:void(0)", class: "down_btn fr", :onclick => "alert('没有学生提交作业，无法下载附件')" %>
+                <%= link_to "附件", "javascript:void(0)", class: "down_btn fr zip_download_alert", :onclick => "alert('没有学生提交作业，无法下载附件')" %>
             <% else%>
                 <%= link_to "附件", zipdown_assort_path(obj_class: @homework.class, obj_id: @homework, format: :json),
-                            remote: true, class: "down_btn fr", :id => "download_homework_attachments" %>
+                            remote: true, class: "down_btn fr zip_download_alert", :id => "download_homework_attachments" %>
             <% end%>
+            <div class="info_ni">
+              使用
+              <span class="c_red">winzip</span>
+              工具进行解压可能会导致
+              <span class="c_red">下载文件乱码</span>
+              ，建议您使用
+              <span class="c_red">winrar</span>
+              工具进行解压
+            </div>
 
             <%= link_to l(:label_list), student_work_index_path(:homework => @homework.id,:order => @order, :sort => @b_sort, :name => @name, :format => 'xls'),:class=>'down_btn fr'%>
             <span class="mt3 fr " style="color:#136b3b;">导出全部：</span>

public/javascripts/course.js

@@ -797,6 +797,18 @@ $(function(){
     });
 
     $("#about_project label").eq(1).remove();
+
+    //附件下载提示
+    $(".zip_download_alert").bind("mouseover",function(e){
+        //alert($(this).html());
+        $(this).next("div").show();
+        $(this).next("div").css("top",e.pageY);
+        $(this).next("div").css("left",e.pageX);
+    });
+    $(".zip_download_alert").bind("mouseout",function(e){
+        //alert($(this).html());
+        $(this).next("div").hide();
+    });
 });
 
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