Implement backend for contact form with gateway integration

backend/gateway/src/main/java/dev/rheinsw/gateway/GatewayApplication.java

@@ -0,0 +1,15 @@
+package dev.rheinsw.gateway;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * @author Thatsaphorn Atchariyaphap
+ * @since 04.05.25
+ */
+@SpringBootApplication
+public class GatewayApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(GatewayApplication.class, args);
+    }
+}

backend/gateway/src/main/java/dev/rheinsw/gateway/Main.java

@@ -1,11 +0,0 @@
-package dev.rheinsw.gateway;
-
-/**
- * @author Thatsaphorn Atchariyaphap
- * @since 04.05.25
- */
-public class Main {
-    public static void main(String[] args) {
-        System.out.println("Hello, World!");
-    }
-}

backend/gateway/src/main/resources/application.yml

@@ -0,0 +1,23 @@
+server:
+  port: 8080
+
+eureka:
+  client:
+    service-url:
+      defaultZone: http://localhost:8761/eureka/
+
+spring:
+  application:
+    name: gateway
+  main:
+    web-application-type: reactive  # Set the application type to reactive
+
+  cloud:
+    gateway:
+      routes:
+        - id: server
+          uri: lb://server
+          predicates:
+            - Path=/api/**
+          filters:
+            - StripPrefix=1