spring interceptor失效

适用方式

1. 增加interceptor，implements HandlerInterceptor，实例如下

	@Slf4j
public class AccessInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("accessInterceptor:权限查询。。。。。。。。");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}

2. 注册到WebMvcConfigurationSupport或者WebMvcConfigurer的继承类中

@Configuration
public class AxLogInterWebConfig extends WebMvcConfigurationSupport {
    @Bean
    LogInterceptor logInterceptor() {
        return new LogInterceptor();
    }


    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(logInterceptor());
    }
}

失效分析

如果失效了的话，那么可能出现如下原因

1. 没有扫描到包
2. path配置错误

上面是常规原因，最有可能的原因是：
3. WebMvcConfigurationSupport优先级大于WebMvcConfigurer，如果继承的话，那么优先继承WebMvcConfigurationSupport
4. 注意：WebMvcConfigurationSupport只能生效一个，如果有多个，那么也只能生效一个。