BAEL-3724: Add cross origin requests processing config (#8770)

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/cors/AccountController.java

@@ -12,7 +12,7 @@ import org.springframework.web.bind.annotation.RestController;
 public class AccountController {
 
     @CrossOrigin("http://example.com")
-    @RequestMapping("/{id}")
+    @RequestMapping(method = RequestMethod.GET, path = "/{id}")
     public Account retrieve(@PathVariable Long id) {
         return new Account(id);
     }

spring-boot-modules/spring-boot-runtime/src/main/java/com/baeldung/cors/config/WebConfig.java

@@ -0,0 +1,16 @@
+package com.baeldung.cors.config;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+
+@Configuration
+@EnableWebMvc
+public class WebConfig implements WebMvcConfigurer {
+
+    @Override
+    public void addCorsMappings(CorsRegistry registry) {
+        registry.addMapping("/**");
+    }
+}