Servlet und Web

--- StatusServlet.java
+++ StatusController.java
@@ -1,21 +1,15 @@
-package at.aydin.lab.web.legacy;
+package at.aydin.lab.web.modern;
 
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.IOException;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+import java.util.Map;
 
-public class StatusServlet extends HttpServlet {
-    @Override
-    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
-        response.setStatus(200);
-        response.setContentType("application/json;charset=UTF-8");
-        response.getWriter().write(statusJson());
-    }
-
-    // Design Pattern: Front Controller (kleine Demonstration)
-    // Zweck: Ein zentraler Servlet-Endpunkt verarbeitet den HTTP-Aufruf.
-    static String statusJson() {
-        return "{\"status\":\"UP\",\"stack\":\"javax.servlet\"}";
+@RestController
+// Design Pattern: Front Controller + MVC Controller
+// Zweck: Spring MVC übernimmt Routing, Konvertierung und HTTP-Infrastruktur.
+public class StatusController {
+    @GetMapping("/status")
+    public Map<String, String> status() {
+        return Map.of("status", "UP", "stack", "Spring MVC / jakarta.servlet");
     }
 }

--- ServletLegacyApplication.java
+++ WebModernApplication.java
@@ -1,21 +1,11 @@
-package at.aydin.lab.web.legacy;
+package at.aydin.lab.web.modern;
 
-import org.eclipse.jetty.server.Server;
-import org.eclipse.jetty.servlet.ServletContextHandler;
-import org.eclipse.jetty.servlet.ServletHolder;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
 
-public final class ServletLegacyApplication {
-    private ServletLegacyApplication() {
-    }
-
-    public static void main(String[] args) throws Exception {
-        Server server = new Server(8083);
-        ServletContextHandler context = new ServletContextHandler();
-        context.setContextPath("/");
-        context.addServlet(new ServletHolder(new StatusServlet()), "/status");
-        server.setHandler(context);
-        server.start();
-        System.out.println("Legacy Servlet: http://localhost:8083/status");
-        server.join();
+@SpringBootApplication
+public class WebModernApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(WebModernApplication.class, args);
     }
 }