解决SpringMvc中普通类注入Service为null的问题

/**

  * 定时获取课程的service

  */

@Autowired

protected QuartzGetCourseService quartzGetCourseService = (QuartzGetCourseService) SpringContextUtil

         .getBean( "quartzGetCourseService" );

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.NoSuchBeanDefinitionException;

import org.springframework.context.ApplicationContext;

import org.springframework.context.ApplicationContextAware;

import org.springframework.stereotype.Component;

/**

  * 在Spring 注解中，普通类获取@Service标记的方法或者bean对象

  *

  */

@Component

public class SpringContextUtil implements ApplicationContextAware {

     private static ApplicationContext applicationContext = null ;

     @Override

     public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {

         SpringContextUtil.applicationContext = applicationContext;

     }

     public static ApplicationContext getApplicationContext() {

         return applicationContext;

     }

     /**

      * 注意 bean name默认 = 类名(首字母小写) 例如: A8sClusterDao = getBean("a8sClusterDao")

      *

      * @param name

      * @return

      * @throws BeansException

      */

     public static Object getBean(String name) throws BeansException {

         return applicationContext.getBean(name);

     }

     /**

      * 根据类名获取到bean

      *

      * @param <T>

      * @param clazz

      * @return

      * @throws BeansException

      */

     @SuppressWarnings ( "unchecked" )

     public static <T> T getBeanByName(Class<T> clazz) throws BeansException {

         try {

             char [] cs = clazz.getSimpleName().toCharArray();

             cs[ 0 ] += 32 ; // 首字母大写到小写

             return (T) applicationContext.getBean(String.valueOf(cs));

         }

         catch (Exception e) {

             e.printStackTrace();

             return null ;

         }

     }

     public static boolean containsBean(String name) {

         return applicationContext.containsBean(name);

     }

     public static boolean isSingleton(String name) throws NoSuchBeanDefinitionException {

         return applicationContext.isSingleton(name);

     }

}

@Component

public class SmsController {   

     private static Logger logger = LoggerFactory.getLogger(SmsController. class );   

     @Autowired

     private MessagesInfoService messagesInfoService; 

     private static SmsController smsController;    

     @PostConstruct

     public void init() { 

         smsController = this ; 

         smsController.messagesInfoService = this .messagesInfoService;   

     } 

     /**

      *短信历史查询接口(查询某个时间段发送的短信)

      */

     @RequestMapping (value = "/queryMessage" ,method = RequestMethod.GET)

     public ModelAndView queryMessage{

         pager = messagesInfoService.findPager(map, 5 ,pIndex);

         ModelAndView modelAndView = new ModelAndView( "manage/jgdxgl/jgdx_qm" );

         List<MessagesInfo> list = pager.getItem();

         modelAndView.addObject( "pager" ,pager);

         modelAndView.addObject( "list" ,list);

         return modelAndView

     }     

}