16.设置允许跨域

@Configuration
public class BianenCorsConfiguration {
    @Bean
    public CorsWebFilter corsWebFilter(){
        UrlBasedCorsConfigurationSource  source=new  UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration=new CorsConfiguration();
        //配置跨域
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.setAllowCredentials(true);
        source.registerCorsConfiguration("/**",corsConfiguration);
        return new CorsWebFilter(source);
    }
}