How to implement cross domain requests

Method 1 ：

@Configuration
public class CorsConfig {

    private CorsConfiguration buildConfig(){
        CorsConfiguration configuration = new CorsConfiguration();
        // Set properties 
        // Addresses that allow cross domain requests ,* Express all 
        configuration.addAllowedOrigin("*");
        // Configure cross domain request headers 
        configuration.addAllowedHeader("*");
        // Configure cross domain request methods 
        configuration.addAllowedMethod("*");
        // Indicates whether the same is used for cross domain requests session
        configuration.setAllowCredentials(true);

        return configuration;
    }

    @Bean
    public CorsFilter corsFilter(){
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**",buildConfig());
        return new CorsFilter(source);
    }
}

Method 2 ：

@CrossOrigin(origins = "*",allowedHeaders = "*",methods = {},allowCredentials = "true")

@RestController
@CrossOrigin(origins = "*",allowedHeaders = "*",methods = {},allowCredentials = "true")
public class TestController {
    @RequestMapping("/auth/login")
    public String test(){
        System.out.println("test");
        return "";
    }
}