使用DWR完成消息推送

3.SendServlet.java

??4.Message.jsp
?5.配置web.xml
<servlet>    <servlet-name>dwr-invoker</servlet-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>      <!-- 启用反向 -->      <param-name>activeReverseAjaxEnabled</param-name>      <param-value>true</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>    <servlet-name>dwr-invoker</servlet-name>    <url-pattern>/dwr/*</url-pattern>  </servlet-mapping>    <servlet>  <servlet-name>SendServlet</servlet-name>  <servlet-class>com.bjpowernode.dwr.SendServlet</servlet-class>  </servlet>    <servlet-mapping>  <servlet-name>SendServlet</servlet-name>  <url-pattern>/servlet/SendServlet</url-pattern>  </servlet-mapping>
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