#35 springboot: add spring container

springboot/server/build.gradle

@@ -14,6 +14,9 @@ repositories {
 dependencies {
     //서블릿
     implementation 'jakarta.servlet:jakarta.servlet-api:6.0.0'
+
+    // 스프링 MVC
+    implementation 'org.springframework:spring-webmvc:6.0.4'
 }
 
 tasks.named('test') {

springboot/server/src/main/java/hello/container/AppInitV2Spring.java

@@ -0,0 +1,27 @@
+package hello.container;
+
+import hello.spring.HelloConfig;
+import jakarta.servlet.ServletContext;
+import jakarta.servlet.ServletRegistration;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+import org.springframework.web.servlet.DispatcherServlet;
+
+public class AppInitV2Spring implements AppInit {
+    @Override
+    public void onStartup(ServletContext servletContext) {
+        System.out.println("AppInitV2Spring.onStartup");
+
+        // 스프링 컨테이너 생성
+        AnnotationConfigWebApplicationContext appContext = new AnnotationConfigWebApplicationContext();
+        appContext.register(HelloConfig.class);
+
+        // 스프링 MVC 디스패처 서블릿 생성, 스프링 컨테이너 연결
+        DispatcherServlet dispatcher = new DispatcherServlet(appContext);
+
+        // 디스패처 서블릿을 서블릿 컨테이너에 등록
+        ServletRegistration.Dynamic servlet = servletContext.addServlet("dispatcherV2", dispatcher);
+
+        // /spring/* 요청이 디스패처 서블릿을 통하도록 설정
+        servlet.addMapping("/spring/*");
+    }
+}

springboot/server/src/main/java/hello/spring/HelloConfig.java

@@ -0,0 +1,13 @@
+package hello.spring;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class HelloConfig {
+
+    @Bean
+    public HelloController helloController() {
+        return new HelloController();
+    }
+}

springboot/server/src/main/java/hello/spring/HelloController.java

@@ -0,0 +1,14 @@
+package hello.spring;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class HelloController {
+
+    @GetMapping("/hello-spring")
+    public String hello() {
+        System.out.println("HelloController.hello");
+        return "hello spring!";
+    }
+}