原因是：LoginController中用到，自动注入，要配置在 /permission1110/config/spring/applicationContext-service.xml中配置bean

@Controller

public class LoginController {

@Autowired

private SysService sysService;

---

<!-- 认证和授权的service -->

<bean id="sysService" class="cn.itcast.ssm.service.impl.SysServiceImpl"></bean>