springboot后台跨域设置

@Configuration
public class CorsConfig {

    @Bean
    public FilterRegistrationBean getBean() {
        System.out.println("进入跨域设置");
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowedHeaders(Arrays.asList("*"));
        config.setAllowedMethods(Arrays.asList("*"));
        config.setAllowedOrigins(Arrays.asList("*"));
        config.setExposedHeaders(Arrays.asList("token"));
        UrlBasedCorsConfigurationSource configurationSource = new UrlBasedCorsConfigurationSource();
        configurationSource.registerCorsConfiguration("/**", config);
        CorsFilter corsFilter = new CorsFilter(configurationSource);
        return new FilterRegistrationBean(corsFilter, new ServletRegistrationBean[0]);
    }
}