实现最基本的留言功能，输入发帖人和留言内容，同一页面下显示发帖人的姓名、内容和发帖时间。适用于jsp初学者参考使用。-Achieve the most basic message function, enter the post and the message content, posting the same page displayed under the name, content, and post time. Jsp reference for beginners.

jsp的农产品销售系统，有一般农产品交易的流程，支持在线评价功能。-jsp the agricultural marketing system, there is the process of agricultural trade in general, support the online uation function.