Struts内部使用ObjectFactory来构建配置定义的所有对象.查看有关 ObjectFactory 的更多信息docs或 Struts 2请求流程.

Internally Struts uses the ObjectFactory to build all objects defined by the configuration. See more about ObjectFactory docs or The Struts 2 Request Flow.

使用 params 拦截器填充某些bean时默认情况下，将在 OGNL 的帮助下创建对象.它也是可配置的.

When you populate some bean using params interceptor it will by default create objects if they not exist with the help of OGNL. It's also configurable.

PropertyUtils未被Struts2内核使用，但是如果插件需要commons-beanutils包，则可以被插件使用.

PropertyUtils isn't used by the Struts2 core, but could be used by plugins if they need a commons-beanutils package.