BAEL3771 Cache Headers in Spring MVC (#8682)

* BAEL3771: Cache Headers in Spring MVC

* BEAL3771: Cache Headers in Spring MVC

* BEAL3771: Cache Headers in Spring MVC

spring-mvc-java-2/src/main/java/com/baeldung/cache/WebConfig.java

@@ -0,0 +1,41 @@
+package com.baeldung.cache;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.CacheControl;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
+import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
+import org.springframework.web.servlet.config.annotation.ViewControllerRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.mvc.WebContentInterceptor;
+
+import java.util.concurrent.TimeUnit;
+
+@EnableWebMvc
+@Configuration
+@ComponentScan(basePackages = {"com.baeldung.cache"})
+public class WebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addViewControllers(final ViewControllerRegistry registry) {
+        registry.addViewController("/").setViewName("index");
+    }
+
+    @Override
+    public void addResourceHandlers(final ResourceHandlerRegistry registry) {
+        registry.addResourceHandler("/resources/**").addResourceLocations("/resources/")
+          .setCacheControl(CacheControl.maxAge(60, TimeUnit.SECONDS)
+            .noTransform()
+            .mustRevalidate());
+    }
+
+    @Override
+    public void addInterceptors(InterceptorRegistry registry) {
+        WebContentInterceptor interceptor = new WebContentInterceptor();
+        interceptor.addCacheMapping(CacheControl.maxAge(60, TimeUnit.SECONDS)
+          .noTransform()
+          .mustRevalidate(), "/cache/*");
+        registry.addInterceptor(interceptor);
+    }
+}