spring-boot CORS跨域的配置

"Access-Control-Allow-Origin"表明它允许发起跨域请求

"Access-Control-Max-Age"表明在3600秒内，不需要再发送预检验请求，可以缓存该结果

"Access-Control-Allow-Methods"表明它允许GET、PUT、DELETE的外域请求

"Access-Control-Allow-Headers"表明它允许跨域请求包含content-type头

public class CorsConfig extends WebMvcConfigurerAdapter {

    @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);
    }

}