1. 在控制层上加注解 @CrossOrigin

@CrossOrigin
@Api(tags = "用户基本信息")
@RestController
@RequestMapping("/api/core/userInfo")
public class ApiUserInfoController {
}

2. 开启跨域资源共享

@Configuration
public class GlobalCorsConfig {
    @Bean
    public CorsFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();
        // 设置你要允许的网站域名
        config.addAllowedOrigin("http://localhost:8080");
        //允许跨域发送cookie
        config.setAllowCredentials(true);
        //放行全部原始头信息
        config.addAllowedHeader("*");
        //允许所有请求方法跨域调用
        config.addAllowedMethod("*");
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", config);
        return new CorsFilter(source);
    }
}

3. 配置网关统一跨域

@Configuration
public class GatewayConfig {
    /*
        springmvc：
            在Controller或者它的接口上使用//@CrossOrigin注解
        gateway：
            配置CorsWebFilter设置允许跨域
     */
    @Bean
    public CorsWebFilter corsWebFilter() {
        UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource();
        CorsConfiguration config = new CorsConfiguration();
        config.addAllowedMethod("*");//哪些请求方式允许跨域访问
        config.addAllowedHeader("*");//允许携带哪些请求头跨域访问
        config.addAllowedOrigin("*");//允许哪些origin跨域访问
        config.setAllowCredentials(true);//是否允许携带cookie跨域访问
        configSource.registerCorsConfiguration("/**", config);
//        configSource.registerCorsConfiguration("/**/sms/**",config2);
        return new CorsWebFilter(configSource);
    }
}