服务启动时处理业务，获取Spring Bean

<listener>
<listener-class>com.zskx.pem.network.consult.web.ServerStartListener</listener-class>
</listener>

public class ServerStartListener implements ServletContextListener {
private ConsultantService consultantService;
private UserService userService;
@Override
public void contextInitialized(ServletContextEvent sce) {
ApplicationContext ac = null;
ac = WebApplicationContextUtils.getRequiredWebApplicationContext(sce
.getServletContext());
setUserService((UserService) ac.getBean("userService"));
setConsultantService((ConsultantService) ac
.getBean("consultantService"));
try {
getUserService().updateAllUserStatus(EnumConsultStatus.OFFLINE);
Thread.sleep(2000);
getConsultantService().updateAllConsultantStatus(
EnumConsultStatus.OFFLINE);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void contextDestroyed(ServletContextEvent sce) {
// TODO Auto-generated method stub
}
public ConsultantService getConsultantService() {
return consultantService;
}
public void setConsultantService(ConsultantService consultantService) {
this.consultantService = consultantService;
}
public UserService getUserService() {
return userService;
}
public void setUserService(UserService userService) {
this.userService = userService;
}