struts的logic标签和<bean:write/>详情

https://baike.baidu.com/item/Logic%E6%A0%87%E7%AD%BE/2292947?fr=aladdin

https://blog.csdn.net/appleat/article/details/1540464

<bean:write/>标签使用方法详解

https://blog.csdn.net/u013361010/article/details/41009725