Spring Boot CORS issue

Question

I am trying to learn spring with this tutorial:

https://spring.io/guides/tutorials/react-and-spring-data-rest/

but I am doing frontend app as a separate app. While making a call to: http://localhost:8080/api/employees

how to enable CORS globally ? thanks!

Tried in Application with:

@Bean
    public WebMvcConfigurer configurer()
    {
        return new WebMvcConfigurer()
        {
            @Override
            public void addCorsMappings(CorsRegistry registry)
            {
                registry.addMapping("/api/*").allowedOrigins("http://localhost:8000");
            }
        };
    }

but it does not help

did some testing with custom @RestController like here:

https://spring.io/guides/gs/rest-service-cors/#global-cors-configuration and calling http://localhost:8080/api/greeting from external frontend app works fine, only those rest endpoints CRUD auto generated via spring are not allowed CORS there.. How to avoid this issue ?

Answer 1

Try adding this to your main application class file:

    @Bean
public FilterRegistrationBean corsFilter() {
    UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    CorsConfiguration config = new CorsConfiguration();
    config.setAllowCredentials(true);
    config.addAllowedOrigin("*");
    config.addAllowedHeader("*");
    config.addAllowedMethod("*");
    source.registerCorsConfiguration("/**", config);
    FilterRegistrationBean bean = new FilterRegistrationBean<>(new CorsFilter(source));
    bean.setOrder(0);
    return bean;
}