作业打包作业名带+号无法下载

public/javascripts/application.js

@@ -911,8 +911,10 @@ $(function(){
             else
             {
                 if(res.length==1){
-                    location.href = '/zipdown/download?file='+res[0].file;return;
+                    var file = encodeURI(res[0].file).replace(/\+/g, '%2B');
+                    location.href = '/zipdown/download?file='+file;return;
                 }
+
                 document.getElementById('light').style.display='block';
                 $container = $('#light .upload_box_ul');
                 $container.empty();