dwr web.xml配置

<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>
		    		<param-name>config</param-name>
		    		<param-value>/WEB-INF/dwr.xml</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>