【MARK】拦截器中自动注入失败问题

我在拦截器中想自动注入一个对象的时候发现无法注入，获取到的一直是null

 

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

public class RestInterceptor implements HandlerInterceptor {           @Autowired     private EscUserMapper escUserMapper;       @Override     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws BaseAppException {         return true;     }           @Override     public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,         ModelAndView modelAndView) throws BaseAppException {         // TODO Auto-generated method stub               }       @Override     public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)         throws BaseAppException {         // TODO Auto-generated method stub               } }

　　

解决办法：
在Spring添加拦截器之前先自己创建一下这个Spring Bean，这样就能在Spring映射这个拦截器前自动注入对象了。

?

1 2 3 4 5 6 7 8 9 10 11 12 13

@Configuration public class RestWebAppConfigurer extends WebMvcConfigurerAdapter {           @Bean     public RestInterceptor restInterceptor() {         return new RestInterceptor();     }       public void addInterceptors(InterceptorRegistry registry) {         registry.addInterceptor(restInterceptor()).addPathPatterns("/iot/**");         super.addInterceptors(registry);     } }

　　

参考文档：http://www.cnblogs.com/niceboat/p/6958895.html