파라메터 주입

src/main/java/site/metacoding/ds/DispatcherServlet.java

@@ -3,12 +3,14 @@
 import java.io.IOException;
 import java.lang.annotation.Annotation;
 import java.lang.reflect.Method;
+import java.lang.reflect.Parameter;
 
 import javax.servlet.ServletException;
 import javax.servlet.annotation.WebServlet;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
 
 @WebServlet("/")
 public class DispatcherServlet extends HttpServlet{
@@ -49,10 +51,33 @@ private void doProcess(HttpServletRequest req, HttpServletResponse resp) throws
 			Annotation annotation = 
 					method.getDeclaredAnnotation(RequestMapping.class);
 			RequestMapping requestMapping = (RequestMapping) annotation;
+
+
+
 			try {
+				Parameter[] params = method.getParameters();
+				Object[] q = new Object[params.length];
+
+				for (int i=0; i<params.length; i++) {
+					Class<?> cls = params[i].getType();
+					if(cls == HttpServletRequest.class) {
+						q[i] = req;
+						System.out.println(method.getName() +" : 리케스트 주입됨");
+					}
+
+					if(cls == HttpServletResponse.class) {
+						q[i] = resp;
+						System.out.println(method.getName() +" : 리스펀스 주입됨");
+					}
+
+					if(cls == HttpSession.class) {
+						q[i] = req.getSession();
+					}
+				}
+
 				//System.out.println(requestMapping.value());
 				if(identifier.equals(requestMapping.value())) {
-					method.invoke(c);
+					method.invoke(c, q);
 				}
 			} catch (Exception e) {
 				System.out.println(method.getName()+"은 어노테이션이 없습니다.");

src/main/java/site/metacoding/ds/UserController.java

@@ -1,9 +1,13 @@
 package site.metacoding.ds;
 
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
 public class UserController {
 
 	@RequestMapping("/join")
-	public void join() {
+	public void join(HttpServletRequest req, HttpServletResponse resp) {
+		System.out.println(req.getRequestURL()+" : ");
 		System.out.println("join 호출됨");
 	}