code: package org.rug;
  
  import org.springframework.boot.SpringApplication;
  import org.springframework.boot.autoconfigure.SpringBootApplication;
  import org.springframework.context.annotation.Bean;
  import org.springframework.web.servlet.config.annotation.CorsRegistry;
  import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
  
  
  @SpringBootApplication
  public class WebMain {
  
      public static void main(String[] args) {
          SpringApplication.run(WebMain.class, args);
      }
  
      @Bean
      public WebMvcConfigurer corsConfigurer() {
          return new WebMvcConfigurer() {
              @Override
              public void addCorsMappings(CorsRegistry registry) {
                  registry.addMapping("/*").allowedOrigins("*");
              }
          };
      }
  }
  