[MVC 구현 3단계] 오리(오현서) 미션 제출합니다. (#543)

* feat: JsonView 구현

* refactor: Login 로직 annotation Controller로 동작하도록 변경

* refactor: logout 로직 annotation Controller로 동작하도록 변경

* refactor: ForwardController 어노테이션 기반으로 변경

* refactor: 사용하지 않게된 ManulHandler 관련된 클래스 제거

* chore: DispatcherServlet 패키지 변경

* feat: UserController 추가

* refactor: JsonView가 요구사항에 맞게 view를 반환하도록 변경

* style: 개행 수정

* refactor: 개행 HandlerMapping 구현체 변경

* refactor: DispatcherServlet에서 JspView 의존성 제거

Author: carsago

app/src/main/java/com/techcourse/DispatcherServletInitializer.java

@@ -1,9 +1,17 @@
 package com.techcourse;
 
+import com.techcourse.exception.NotFoundExceptionHandler;
 import jakarta.servlet.ServletContext;
+import java.util.List;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import web.org.springframework.web.WebApplicationInitializer;
+import webmvc.org.springframework.web.servlet.DispatcherServlet;
+import webmvc.org.springframework.web.servlet.mvc.tobe.adapter.AnnotationHandlerAdapter;
+import webmvc.org.springframework.web.servlet.mvc.tobe.adapter.HandlerAdapterFinder;
+import webmvc.org.springframework.web.servlet.mvc.tobe.exception.ExceptionResolver;
+import webmvc.org.springframework.web.servlet.mvc.tobe.handler.AnnotationHandlerMapping;
+import webmvc.org.springframework.web.servlet.mvc.tobe.handler.HandlerMapping;
 
 /**
  * Base class for {@link WebApplicationInitializer}
@@ -17,7 +25,7 @@ public class DispatcherServletInitializer implements WebApplicationInitializer {
 
     @Override
     public void onStartup(final ServletContext servletContext) {
-        final var dispatcherServlet = new DispatcherServlet();
+        final var dispatcherServlet = initDispatcherServlet();
 
         final var registration = servletContext.addServlet(DEFAULT_SERVLET_NAME, dispatcherServlet);
         if (registration == null) {
@@ -30,4 +38,12 @@ public void onStartup(final ServletContext servletContext) {
 
         log.info("Start AppWebApplication Initializer");
     }
+
+    public DispatcherServlet initDispatcherServlet() {
+        HandlerMapping handlerMapping = new AnnotationHandlerMapping();
+        handlerMapping.initialize();
+        HandlerAdapterFinder handlerAdapterFinder = new HandlerAdapterFinder(List.of(new AnnotationHandlerAdapter()));
+        ExceptionResolver exceptionResolver = new ExceptionResolver(List.of(new NotFoundExceptionHandler()));
+        return new DispatcherServlet(handlerMapping, handlerAdapterFinder, exceptionResolver);
+    }
 }

app/src/main/java/com/techcourse/ManualHandlerMapping.java

@@ -1,14 +1,14 @@
 package com.techcourse;
 
+import com.techcourse.exception.UncheckedServletException;
+import java.io.File;
 import org.apache.catalina.Context;
 import org.apache.catalina.LifecycleException;
 import org.apache.catalina.connector.Connector;
 import org.apache.catalina.core.StandardContext;
 import org.apache.catalina.startup.Tomcat;
 import org.apache.tomcat.util.scan.StandardJarScanner;
 
-import java.io.File;
-
 public class TomcatStarter {
 
     public static final String WEBAPP_DIR_LOCATION = "app/src/main/webapp/";

app/src/main/java/com/techcourse/TomcatStarter.java

@@ -0,0 +1,18 @@
+package com.techcourse.controller;
+
+import context.org.springframework.stereotype.Controller;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import web.org.springframework.web.bind.annotation.RequestMapping;
+import web.org.springframework.web.bind.annotation.RequestMethod;
+import webmvc.org.springframework.web.servlet.ModelAndView;
+import webmvc.org.springframework.web.servlet.view.JspView;
+
+@Controller
+public class ForwardController {
+
+    @RequestMapping(value = "/", method = RequestMethod.GET)
+    public ModelAndView show(final HttpServletRequest req, final HttpServletResponse res) {
+        return new ModelAndView(new JspView("/index.jsp"));
+    }
+}

app/src/main/java/com/techcourse/controller/ForwardController.java

@@ -0,0 +1,54 @@
+package com.techcourse.controller;
+
+import com.techcourse.domain.User;
+import com.techcourse.repository.InMemoryUserRepository;
+import context.org.springframework.stereotype.Controller;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import web.org.springframework.web.bind.annotation.RequestMapping;
+import web.org.springframework.web.bind.annotation.RequestMethod;
+import webmvc.org.springframework.web.servlet.ModelAndView;
+import webmvc.org.springframework.web.servlet.view.JspView;
+
+@Controller
+public class LoginController {
+
+    private static final Logger log = LoggerFactory.getLogger(LoginController.class);
+
+    @RequestMapping(value = "/login", method = RequestMethod.POST)
+    public ModelAndView login(final HttpServletRequest req, final HttpServletResponse res) {
+        if (UserSession.isLoggedIn(req.getSession())) {
+            return new ModelAndView(new JspView("redirect:/index.jsp"));
+        }
+
+        String responseUrl = InMemoryUserRepository.findByAccount(req.getParameter("account"))
+            .map(user -> {
+                log.info("User : {}", user);
+                return login(req, user);
+            })
+            .orElse("redirect:/401.jsp");
+        return new ModelAndView(new JspView(responseUrl));
+    }
+
+    private String login(final HttpServletRequest request, final User user) {
+        if (user.checkPassword(request.getParameter("password"))) {
+            final var session = request.getSession();
+            session.setAttribute(UserSession.SESSION_KEY, user);
+            return "redirect:/index.jsp";
+        }
+        return "redirect:/401.jsp";
+    }
+
+    @RequestMapping(value = "/login", method = RequestMethod.GET)
+    public ModelAndView show(HttpServletRequest req, HttpServletResponse res) {
+        String responseUrl = UserSession.getUserFrom(req.getSession())
+            .map(user -> {
+                log.info("logged in {}", user.getAccount());
+                return "redirect:/index.jsp";
+            })
+            .orElse("/login.jsp");
+        return new ModelAndView(new JspView(responseUrl));
+    }
+}

app/src/main/java/com/techcourse/controller/LoginController.java

@@ -0,0 +1,20 @@
+package com.techcourse.controller;
+
+import context.org.springframework.stereotype.Controller;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import web.org.springframework.web.bind.annotation.RequestMapping;
+import web.org.springframework.web.bind.annotation.RequestMethod;
+import webmvc.org.springframework.web.servlet.ModelAndView;
+import webmvc.org.springframework.web.servlet.view.JspView;
+
+@Controller
+public class LogoutController {
+
+    @RequestMapping(value = "/logout", method = RequestMethod.GET)
+    public ModelAndView logout(final HttpServletRequest req, final HttpServletResponse res) {
+        final var session = req.getSession();
+        session.removeAttribute(UserSession.SESSION_KEY);
+        return new ModelAndView(new JspView("redirect:/"));
+    }
+}

app/src/main/java/com/techcourse/controller/LogoutController.java

@@ -1,4 +1,4 @@
-package com.techcourse.controller.annotation;
+package com.techcourse.controller;
 
 import com.techcourse.domain.User;
 import com.techcourse.repository.InMemoryUserRepository;

app/src/main/java/com/techcourse/controller/annotation/RegisterController.java renamed to app/src/main/java/com/techcourse/controller/RegisterController.java

@@ -0,0 +1,31 @@
+package com.techcourse.controller;
+
+import com.techcourse.domain.User;
+import com.techcourse.repository.InMemoryUserRepository;
+import context.org.springframework.stereotype.Controller;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import web.org.springframework.web.bind.annotation.RequestMapping;
+import web.org.springframework.web.bind.annotation.RequestMethod;
+import webmvc.org.springframework.web.servlet.ModelAndView;
+import webmvc.org.springframework.web.servlet.view.JsonView;
+
+@Controller
+public class UserController {
+
+    private static final Logger log = LoggerFactory.getLogger(UserController.class);
+
+    @RequestMapping(value = "/api/user", method = RequestMethod.GET)
+    public ModelAndView show(HttpServletRequest request, HttpServletResponse response) {
+        final String account = request.getParameter("account");
+        log.debug("user id : {}", account);
+
+        final ModelAndView modelAndView = new ModelAndView(new JsonView());
+        final User user = InMemoryUserRepository.findByAccount(account)
+            .orElseThrow();
+        modelAndView.addObject("user", user);
+        return modelAndView;
+    }
+}