dwr+ssh 下拉多级联动

1.web.xml

<!-- 配置dwr -->
	<servlet>
		<servlet-name>dwr-invoker</servlet-name>
		<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
		<init-param>
			<description>调试DWR,发布系统时应将其设为false</description>
			<param-name>debug</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<description>使用服务器推技术(反转AJAX)</description>
			<param-name>activeReverseAjaxEnabled</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>initApplicationScopeCreatorsAtStartup</param-name>
			<param-value>true</param-value>
		</init-param>
		<init-param>
			<param-name>maxWaitAfterWrite</param-name>
			<param-value>100</param-value>
		</init-param>
		<init-param>
	        <param-name>crossDomainSessionSecurity</param-name>   
	     <param-value>false</param-value>   
		</init-param>
		<load-on-startup>4</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>dwr-invoker</servlet-name>
		<url-pattern>/dwr/*</url-pattern>
	</servlet-mapping>

2.在web-inf下面dwr.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">
<dwr>
	<allow>
 
             <create creator="spring" javascript="role">
      		<param name="beanName" value="roleService"/>
             </create>
		 
	</allow>
</dwr>

3.spring配置文件中添加

<bean id="roleService" class="com.cpsp.service.impl.RoleServiceImpl">
		  
	</bean>