Generic tags are used for controlling the execution flow when the pages render. These tags also allow for data extraction from places other than your action or the value stack, such as Localization, JavaBeans, and including additional URLs or action executions.
Generic 标签用来控制页面渲染是的执行流程，还用来允许获取某个地方（不是action和value stack）的数据，例如：Loaclization，JavaBean，和 including additional URLs or action executions.
- Control Tags provide control flow, such as if, else, and iterator.
控制Tag提供控制流程，例如if,else,iterator
- Data Tags allow for data manipulation or creation, such as bean, push, and i18n.
数据Tag允许数据操控或创建，例如bean，push，和i18n