DWR session error

jsp 页面使用到DWR联动的下拉框, 有时会出现session error 错误，解决方法：在web.xml中修改crossDomainSessionSecurity 为false

<servlet>
          <servlet-name>dwr-invoker</servlet-name>
          <!-- <display-name>DWR Servlet</display-name> -->
          <servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
          <init-param>
             <param-name>debug</param-name>
             <param-value>true</param-value>
          </init-param>
          <init-param>
             <param-name>crossDomainSessionSecurity</param-name>
             <param-value>false</param-value>
          </init-param>
      <init-param>
         <param-name>allowScriptTagRemoting</param-name>
         <param-value>true</param-value>
      </init-param>
        </servlet>
此篇博文介绍比较清楚 ：http://hi.baidu.com/ngomail/item/82c7750cda3438ec34990238