抓取屏幕中网页的图片：获取WebBrowser控件句柄，获取网页显示区域信息，获取整个网页宽度场景，执行抓图操作-Webpage capture screen picture: get WebBrowser control handle, get Webpage display regional information, get the entire width of Webpage scene, take the screenshot operation

dtree，公认的jsp好用树结构控件 可以直接修改里面的图片、css显示样式(Dtree, recognized JSP good tree structure control You can directly modify the picture inside, CSS display styles)