DWR反转Ajax

参考文章： http://www.examda.com/java/zhuangye/20070731/142542597-5.html 
DwrServlet的web.xml配置：

  dwr-invoker
 
    org.directwebremoteing.servlet.DwrServlet
 
 
    activeReverseAjaxEnabled
    true
 
 
    initApplicationScopeCreatorsAtStartup
    true
 
 

window.onload = function() {
  dwr.engine.setActiveReverseAjax(true);
}