DWR的三种Reverse Ajax Mode配置详解

phyeas

Dwr的Reverse Ajax可分为两中基本的mode.一种是Active,另一种是Passive,在Active中又分为三种.
Full Streaming Mode
Early Closing Mode
Polling Mode
在DWR应用中.默认启用的是Full Streaming Mode .它是三种modes中最快的一种.它每60秒检查一次浏览器是否是活跃的.配置很简单:

<div style="border-right: #cccccc 1px solid; padding-right: 5px; padding-left: 4px; font-size: 13px; border-top: #cccccc 1px solid; padding-bottom: 4px; border-left: #cccccc 1px solid; width: 98%; padding-top: 4px; border-bottom: #cccccc 1px solid; background-color: #eeeeee;"><servlet>
  <servlet-name>dwr-invoker</servlet-name>
  <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
  <init-param>
    <param-name>activeReverseAjaxEnabled</param-name>
    <param-value>true</param-value>
  </init-param>
</servlet>