Springboot跨域和SpringCloud跨域

1、Springboot全局跨域

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(true);
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");
        config.addAllowedMethod("*");
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }

生成环境通常需要在配置文件里设置，而且origin一般不能用*号

application.yml文件配置

cors:
  allowed-origin: http://localhost,http://192.168.1.104

读取配置

@Data
@Configuration
@ConfigurationProperties(prefix = "cors")
public class CorsProperties {
    private String[] allowedOrigin = {"*"};
    private String[] allowedHeader = {"*"};
    private String[] allowedMethod = {"*"};
    private boolean allowCredentials = true;
}

注入CorsProperties 后获取

    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.setAllowCredentials(corsProperties.isAllowCredentials());
        for (String origin : corsProperties.getAllowedOrigin()) {
            config.addAllowedOrigin(origin);
        }
        for (String header : corsProperties.getAllowedHeader()) {
            config.addAllowedHeader(header);
        }
        for (String method : corsProperties.getAllowedMethod()) {
            config.addAllowedMethod(method);
        }
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }

2、Springcloud跨域

微服务的跨域一般设置在网关（其他微服务的跨域必须去掉），配置与Springboot基本相同。

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