Gateway 如何解决跨域问题

1、写个配置类CorsConfig (如果不行，可以不写此类，和springcloud的版本有关)

package net.youqu.micro.service.config;
  
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;
  
/**
 * description:
 * java项目fhadmin.cn
 */
@Configuration
public class CorsConfig {
    @Bean
    public CorsWebFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();
        config.addAllowedMethod("*");  // 是什么请求方法，比如GET POST PUT DELATE ...
        config.addAllowedOrigin("*");  // 来自哪个域名的请求，*号表示所有
        config.addAllowedHeader("*");  // 是什么请求头部
  
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        source.registerCorsConfiguration("/**", config);
  
        return new CorsWebFilter(source);
    }
}

2. 配置 application.yaml方式

spring:
  cloud:
    gateway:
      globalcors:
        corsConfigurations:
          '[/**]':
            allowCredentials: true
            allowedHeaders: '*'
            allowedMethods: '*'
            allowedOrigins: '*'