etags attempt #2

src/main/java/xyz/mcutils/backend/config/Config.java

@@ -6,9 +6,11 @@ import lombok.NonNull;
 import lombok.extern.log4j.Log4j2;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.web.servlet.FilterRegistrationBean;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.core.env.Environment;
+import org.springframework.web.filter.ShallowEtagHeaderFilter;
 import org.springframework.web.servlet.config.annotation.CorsRegistry;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@@ -28,6 +30,14 @@ public class Config {
         INSTANCE = this;
     }
 
+    @Bean
+    public FilterRegistrationBean<ShallowEtagHeaderFilter> shallowEtagHeaderFilter() {
+        FilterRegistrationBean<ShallowEtagHeaderFilter> filterRegistrationBean = new FilterRegistrationBean<>(new ShallowEtagHeaderFilter());
+        filterRegistrationBean.addUrlPatterns("/*");
+        filterRegistrationBean.setName("etagFilter");
+        return filterRegistrationBean;
+    }
+
     @Bean
     public WebMvcConfigurer configureCors() {
         return new WebMvcConfigurer() {