CorsConfig.java

package io.navan.heroesbackend;

import java.util.Arrays;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class CorsConfig {
  @Bean
  public CorsFilter corsFilter() {
      CorsConfiguration config = new CorsConfiguration();
      config.addAllowedOrigin("*");
      config.addAllowedHeader("*");
      config.setAllowedMethods(Arrays.asList(
    		  new String[] {"OPTIONS", "GET", "POST", "PUT", "DELETE"}));

      UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
      source.registerCorsConfiguration("/**", config);

      return new CorsFilter(source);
  }
}