springboot的那些坑

1. Cors问题。通过如下方式可以完成跨越问题

	@Bean
	public CorsFilter corsFilter() {
		final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
		final CorsConfiguration config = new CorsConfiguration();
		config.setAllowCredentials(true);
		config.addAllowedOrigin("*");
		config.addAllowedHeader("*");
		config.addAllowedMethod("HEAD");
		config.addAllowedMethod("GET");
		config.addAllowedMethod("PUT");
		config.addAllowedMethod("POST");
		config.addAllowedMethod("DELETE");
		config.addAllowedMethod("PATCH");
		config.setMaxAge(6000l);
		source.registerCorsConfiguration("/**", config);
		return new CorsFilter(source);
	}

通过如下方式不可以:

@Configuration
public class CorsConfig implements WebMvcConfigurer{
	@Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
        .allowedOrigins("*")
        .allowedMethods("GET", "POST", "PUT", "OPTIONS", "DELETE", "PATCH")
          .allowCredentials(true).maxAge(3600);
    }
}