【SpringBoot】解決攔截器注入 Service 爲空問題

1、自定義攔截器實現 HandlerInterceptor 接口

/**
 *  
 * Created by zhh on 2018/04/20.
 */
public class MyInterceptor implements HandlerInterceptor {

    @Autowired
    private NetworkProxyInfoService networkProxyInfoService;
    
    @Override
    public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
            throws Exception {
        // TODO Auto-generated method stub
    }

    @Override
    public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
            throws Exception {
        networkProxyInfoService.getAllNetworkProxyInfoByIsValid(GobalConstant.ProxyValid.VALID);
    }

    @Override
    public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2) throws Exception {
        // TODO Auto-generated method stub
        return true;
    }

}

2、自定義攔截器配置

/**
 * 
 * Created by zhh on 2018/04/20.
 */
@Configuration
public class MyWebMvcConfig extends WebMvcConfigurerAdapter {
    
    /**
     * 將自定義攔截器做爲Bean寫入配置
     * @return
     */
    @Bean
    public MyInterceptor myInterceptor() {
        return new MyInterceptor();
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        /**
         * 多個攔截器組成一個攔截器鏈
         * addPathPatterns 用於添加攔截規則
         * excludePathPatterns 用戶排除攔截
         */
        registry.addInterceptor(myInterceptor()).addPathPatterns("/**");
        super.addInterceptors(registry);
    }
    
}