本次升级版在功能上并没有太大的变化，多数是做代码整理和优化，修正书生以知道的BUG，增加了一个图片显示，对管理评论文章可以单个进行删除，增加了分级管理-The upgraded version of the feature and has not changed much, the majority do code cleanup and optimization, in order to amend the student know BUG, added a picture displayed