java web解決跨域問題，親測有效！

@Configuration
public class BeanConfiguration {
    @Bean
     public CorsFilter corsFilter() {
                final UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
                final CorsConfiguration corsConfiguration = new CorsConfiguration();
                corsConfiguration.setAllowCredentials(true);
                 corsConfiguration.addAllowedOrigin("*");
                 corsConfiguration.addAllowedHeader("*");
                 corsConfiguration.addAllowedMethod("*");
                 urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
                 return new CorsFilter(urlBasedCorsConfigurationSource);
             }

}

自定義配置類，加入該代碼，即可解決！