跨域流程与解决跨域

1. 跨域
   协议，ip，端口如不完全相同，则需考虑跨域

2. 跨域流程
   

3. 解决跨域
   方式一：使用nginx 部署为同一域
   
   方式二：在Gateway模块中配置请求允许跨域

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;

@Configuration
public class GulimallCorsConfiguration {
    
    

    @Bean
    public CorsWebFilter corsWebFilter(){
    
    
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();

        CorsConfiguration corsConfiguration = new CorsConfiguration();

        //1、配置跨域
        corsConfiguration.addAllowedHeader("*");
        corsConfiguration.addAllowedMethod("*");
        corsConfiguration.addAllowedOrigin("*");
        corsConfiguration.setAllowCredentials(true);
       source.registerCorsConfiguration("/**",corsConfiguration);
        return new CorsWebFilter(source);
    }
}

来源：尚硅谷谷粒商城项目