下面的我一開始的配置

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
    @Autowired
    private AuthorizationInterceptor authorizationInterceptor;
    @Autowired
    private FileTypeInterceptor fileTypeInterceptor;
    @Autowired
    private LoginUserHandlerMethodArgumentResolver loginUserHandlerMethodArgumentResolver;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(authorizationInterceptor).addPathPatterns("/api/**");
        registry.addInterceptor(fileTypeInterceptor).addPathPatterns("/api/**");
    }

    @Override
    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
        argumentResolvers.add(loginUserHandlerMethodArgumentResolver);
    }

    @Override
   public void addCorsMappings(CorsRegistry registry) {
       registry.addMapping("/**").allowedOrigins("*").allowedMethods("GET", "POST", "OPTIONS", "PUT")
                .allowedHeaders("Content-Type", "X-Requested-With", "accept", "Origin", "Access-Control-Request-Method",
                        "Access-Control-Request-Headers", "Access-Control-Allow-Origin", "Access-Control-Allow-Credentials", "token")
                //.exposedHeaders("")
                .allowCredentials(true).maxAge(3600);
    }
}

問題描述：

處理跨域攔截外，還配置了token的攔截和文件上傳格式的攔截。
自定義的token攔截器比自帶的跨域攔截器執行順序靠前，當token失效拋出異常的時候，會導致沒有進行跨域攔截處理。

解決方法：

改為用過濾器方式處理跨域問題

    @Bean
    public CorsFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();
        config.addAllowedOrigin("*");
        config.addAllowedMethod("*");
        config.addAllowedHeader("*");
        UrlBasedCorsConfigurationSource corsConfigurationSource = new UrlBasedCorsConfigurationSource();
        corsConfigurationSource.registerCorsConfiguration("/**", config);
        return new CorsFilter(corsConfigurationSource);
    }