【SpringMVC配置失效】Springboot2.x拦截器配置不无生效

一.环境

　　maven springboot版本2.x

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
</parent>

二.无效的拦截器代码

　　自定义拦截器

/**
 * @author: Gabriel
 * @date: 2020/2/5 13:45
 * @description 登录认证拦截
 */
@Slf4j
@Component
public class AuthenticationInterceptor implements HandlerInterceptor {

     @Autowired
     IUserService userService;

    /**
     * 前置处理-方法执行前执行
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        String token = request.getHeader("token");
        //如果不是映射到方法就放行
        if (!(handler instanceof HandlerMethod)) {
            return true;
        }

        HandlerMethod handlerMethod = (HandlerMethod) handler;
        //获取方法及其相关注解
        //检查是否有不需要登录的注解，有则跳过认证
        Method method = handlerMethod.getMethod();
        if (method.isAnnotationPresent(NoRequiredLoginToken.class)) {
            NoRequiredLoginToken noRequiredLoginToken = method.getAnnotation(NoRequiredLoginToken.class);
            if (noRequiredLoginToken.required()) {
                return true;
            }
        }

        //检查有没有需要用户权限的注解
        if (method.isAnnotationPresent(RequiredLoginToken.class)) {
            RequiredLoginToken requiredLoginToken = method.getAnnotation(RequiredLoginToken.class);
            if (requiredLoginToken.required()) {
                //执行认证
                if (StringUtils.isBlank(token)) {
                    throw new BusinessException(ResultCode.NO_LOGIN);
                }
                //获取token中的userId
                String userId;
                try {
                    userId=JWT.decode(token).getAudience().get(0);
                } catch (JWTDecodeException e) {
                    throw new BusinessException(ResultCode.NO_LOGIN);
                }
                User user = userService.getById(userId);
                if (ObjectUtil.isNull(user)) {
                    //TODO 用户不存在,请重新登录，这里需要优化异常类的构造方法
                    throw new BusinessException(ResultCode.NO_LOGIN);
                }
                JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(user.getPassword())).build();
                try {
                    jwtVerifier.verify(token);
                } catch (JWTVerificationException e) {
                    //TODO 校验失败,token有误
                    throw new BusinessException(ResultCode.NO_LOGIN);
                }
                return true;
            }
        }

        //未加注解的方法直接放行-默认是不需要校验的
        return true;
    }

    /**
     * 后置处理-方法执行后执行
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     * @throws Exception
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    /**
     * 最终处理-控制器执行完成后执行
     * @param request
     * @param response
     * @param handler
     * @param ex
     * @throws Exception
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }
}

　　注册拦截器

/**
 * @author: Gabriel
 * @date: 2020/2/5 14:15
 * @description 登录拦截配置
 */
@Configuration
@Order(1)
public class InterceptorConfig implements WebMvcConfigurer {
    @Autowired
    private AuthenticationInterceptor authenticationInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {

        registry.addInterceptor(authenticationInterceptor).addPathPatterns("/**");
    }

}

　　目的是拦截相关的接口，但是一直没生效，最后发现是有其他的WebMvc相关配置冲突了，有其他的类继承了 WebMvcConfigurationSupport，导致冲突

冲突的代码

　　

**
 * @author Gabriel
 * @date 2020-01-08
 * @description  自定义SpringMvc转换器 解决数据转换问题（例如BigDecimal转换为String,解决精度问题）
 */
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

    /**
     * Date格式化字符串
     */
    private static final DateTimeFormatter DATE_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd");
    /**
     * DateTime格式化字符串
     */
    private static final DateTimeFormatter DATETIME_FORMAT = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
    /**
     * Time格式化字符串
     */
    private static final DateTimeFormatter TIME_FORMAT = DateTimeFormatter.ofPattern("HH:mm:ss");

    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        super.configureMessageConverters(converters);
        final MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
        ObjectMapper objectMapper = converter.getObjectMapper();

        // 反序列化失败
        objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);

        // long 转换为字符串
        SimpleModule simpleModule = new SimpleModule();
        simpleModule.addSerializer(BigInteger.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Long.TYPE, ToStringSerializer.instance);

        // 浮点型使用字符串
        simpleModule.addSerializer(Double.class, ToStringSerializer.instance);
        simpleModule.addSerializer(Double.TYPE, ToStringSerializer.instance);
        simpleModule.addSerializer(BigDecimal.class, ToStringSerializer.instance);

        // java8 时间格式化
        simpleModule.addSerializer(LocalDateTime.class, new LocalDateTimeSerializer(DATETIME_FORMAT));
        simpleModule.addSerializer(LocalDate.class, new LocalDateSerializer(DATE_FORMAT));
        simpleModule.addSerializer(LocalTime.class, new LocalTimeSerializer(TIME_FORMAT));

        objectMapper.registerModule(simpleModule);

        // 为mapper注册一个带有SerializerModifier的Factory，处理null值
        objectMapper.setSerializerFactory(objectMapper.getSerializerFactory()
                //CustomizeBeanSerializerModifier 自定义序列化修改器
                .withSerializerModifier(new CustomizeBeanSerializerModifier()));

        // 处理中文乱码问题
        converter.setSupportedMediaTypes(ImmutableList.of(MediaType.APPLICATION_JSON_UTF8));

        converter.setObjectMapper(objectMapper);
        converters.add(converter);
        converters.add(new StringHttpMessageConverter(StandardCharsets.UTF_8));
    }
}

　　解决方案：

　　　　去掉该配置即可，或者去掉@Configure注解，使该文件不生效