feat: UserController 추가

app/src/main/java/com/techcourse/controller/UserController.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 req, HttpServletResponse res) {
+        final String account = req.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;
+    }
+}

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

@@ -6,7 +6,6 @@
 import java.util.Optional;
 
 public class UserSession {
-
     public static final String SESSION_KEY = "user";
 
     public static Optional<User> getUserFrom(final HttpSession session) {
@@ -18,5 +17,6 @@ public static boolean isLoggedIn(final HttpSession session) {
         return getUserFrom(session).isPresent();
     }
 
-    private UserSession() {}
+    private UserSession() {
+    }
 }

mvc/src/main/java/webmvc/org/springframework/web/servlet/view/JsonView.java

@@ -12,23 +12,15 @@
 public class JsonView implements View {
     @Override
     public void render(final Map<String, ?> model, final HttpServletRequest request, HttpServletResponse response) throws Exception {
-        final String body = bodyToJson(getBody(model));
+        final String body = bodyToJson(model);
         response.setContentType(MediaType.APPLICATION_JSON_UTF8_VALUE);
         response.getWriter().write(body);
     }
 
-    private Object getBody(final Map<String, ?> model) {
-        if (model.size() == 1) {
-            return model.keySet().toArray()[0];
-        }
-        return model;
-    }
-
     private String bodyToJson(final Object body) throws JsonProcessingException {
         final ObjectMapper objectMapper = new ObjectMapper();
         return objectMapper
                 .writerWithDefaultPrettyPrinter()
                 .writeValueAsString(body);
     }
-
 }