文件上传，能够实现自动统计功能

[{"title":"（ 7 个子文件 18KB ） 文件上传，能够实现自动统计功能","children":[{"title":"rbzbyb","children":[{"title":"ss_object_edit_f.zul <span style='color:#111;'> 4.08KB </span>","children":null,"spread":false},{"title":"file_tongji.zul <span style='color:#111;'> 9.86KB </span>","children":null,"spread":false},{"title":"ss_object_list_f.zul <span style='color:#111;'> 5.19KB </span>","children":null,"spread":false},{"title":"file_yb_up.zul <span style='color:#111;'> 12.75KB </span>","children":null,"spread":false},{"title":"file_rb_up.zul <span style='color:#111;'> 12.56KB </span>","children":null,"spread":false},{"title":"file_down.zul <span style='color:#111;'> 14.49KB </span>","children":null,"spread":false},{"title":"file_zb_up.zul <span style='color:#111;'> 14.75KB </span>","children":null,"spread":false}],"spread":true}],"spread":true}]