WebCorsConfiguration 跨域配置

**
 * WebCorsConfiguration 跨域配置
 *
 */
@Configuration
public class WebCorsConfiguration implements WebMvcConfigurer {

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);
        config.setAllowedOrigins(Collections.singletonList("*"));
        config.setAllowedMethods(Collections.singletonList("*"));
        config.setAllowedHeaders(Collections.singletonList("*"));
        // 暴露 header 中的其他属性给客户端应用程序
        config.setExposedHeaders(Arrays.asList(
                "Authorization", "X-Total-Count", "Link",
                "Access-Control-Allow-Origin",
                "Access-Control-Allow-Credentials"
        ));
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }

}