Hiio.com

Spring Boot

1. CORS

@Configuration 
public class WebConfig implements WebMvcConfigurer{
    @Override
    public void addCorsMappings(CorsRegistry registry){
        registry.addMapping("/**").allowedOriginPatterns("*").allowedMethods("*").allowCredentials(true);
    }
{

@Configuration  
public class SecurityConfig{


    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception{
        http.csrf().disable().httpBasic().disable().formLogin().disable().cors().configurationSource(corsConfigurationSource());
        return http.build();
    }

    @Bean
    public CorsConfigurationSource corsConfigurationSource(){
        CorsConfiguration configuration = new CorsConfiguration();
        configuration.addAllowedOrigin("*");
        configuration.addAllowedMethod("*");
        configuration.addAllowedHeader("*");
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", configuration);
        return source;
    }


}

2. addResourceHandler

@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/m/**")
            .addResourceLocations("classpath:/")
            .setCachePeriod(20)
            ;
}

Web Analytics GA4(Google Analytics)

1. 링크 : https://support.google.com/analytics/answer/9143382?sjid=1232095385863967603-AP#link&zippy=%2C%EB%A7%81%ED%81%AC
2. outbound : 외부 링크 연결 추적 (Boolean) 링크가 속성 도메인의 일부가 아닌 웹사이트로 연결되는 경우 텍스트는 'true'입니다.
3. 자동 수집 이벤트

영어 단어

1. asterisk = *

Deep learning - pytorch

1. Loss Function -> smooth_l1_loss
2. Optimizer -> torch.optim.LBFGS -> closure 함수를 매개변수로 넣어줘야함
3. torch.nn.lstm -> outputs , hidden return

JAVA - Spring

1. tomcat timeout 45s-> timeouts 시간 늘리기

python - cv2

1. numpy -> cv2.imshow("title",np.array)
2. cv2.cvtColor(img, cv2.COLOR_BGR2RGB)