#22 mvc: create user

my-framework/mvc-practice/src/main/java/org/example/mvc/RequestMappingHandlerMapping.java

@@ -12,7 +12,8 @@ public class RequestMappingHandlerMapping {
     void init() {
         mappings.put(new HandlerKey(RequestMethod.GET, "/"), new HomeController());
         mappings.put(new HandlerKey(RequestMethod.GET, "/users"), new UserListController());
-        mappings.put(new HandlerKey(RequestMethod.POST, "/users"), new UserListController());
+        mappings.put(new HandlerKey(RequestMethod.POST, "/users"), new UserCreateController());
+        mappings.put(new HandlerKey(RequestMethod.GET, "/user/form"), new ForwardController("/user/form"));
     }
 
     public Controller findHandler(HandlerKey handlerKey) {

my-framework/mvc-practice/src/main/java/org/example/mvc/controller/ForwardController.java

@@ -0,0 +1,17 @@
+package org.example.mvc.controller;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class ForwardController implements Controller {
+    private final String forwardUriPath;
+
+    public ForwardController(String forwardUriPath) {
+        this.forwardUriPath = forwardUriPath;
+    }
+
+    @Override
+    public String handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        return forwardUriPath;
+    }
+}

my-framework/mvc-practice/src/main/java/org/example/mvc/controller/UserCreateController.java

@@ -0,0 +1,16 @@
+package org.example.mvc.controller;
+
+import org.example.mvc.model.User;
+import org.example.mvc.repository.UserRepository;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+public class UserCreateController implements Controller {
+    @Override
+    public String handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
+        // user 추가
+        UserRepository.save(new User(request.getParameter("userId"), request.getParameter("name")));
+        return "redirect:/users";
+    }
+}

my-framework/mvc-practice/src/main/java/org/example/mvc/controller/UserListController.java

@@ -1,13 +1,14 @@
 package org.example.mvc.controller;
 
+import org.example.mvc.repository.UserRepository;
+
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
-import java.util.List;
 
 public class UserListController implements Controller {
     @Override
     public String handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception {
-        request.setAttribute("users", List.of());
-        return "/user/list.jsp";
+        request.setAttribute("users", UserRepository.findAll());
+        return "/user/list";
     }
 }

my-framework/mvc-practice/src/main/java/org/example/mvc/filter/CharacterEncodingFilter.java

@@ -0,0 +1,19 @@
+package org.example.mvc.filter;
+
+import javax.servlet.*;
+import javax.servlet.annotation.WebFilter;
+import java.io.IOException;
+
+@WebFilter("/*")
+public class CharacterEncodingFilter implements Filter {
+
+    private static final String DEFAULT_CHARACTER_ENCODING = "UTF-8";
+
+    @Override
+    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+        request.setCharacterEncoding(DEFAULT_CHARACTER_ENCODING);
+        response.setCharacterEncoding(DEFAULT_CHARACTER_ENCODING);
+
+        chain.doFilter(request, response);
+    }
+}

my-framework/mvc-practice/src/main/java/org/example/mvc/model/User.java

@@ -0,0 +1,20 @@
+package org.example.mvc.model;
+
+public class User {
+
+    private final String userId;
+    private final String name;
+
+    public User(String userId, String name) {
+        this.userId = userId;
+        this.name = name;
+    }
+
+    public String getUserId() {
+        return this.userId;
+    }
+
+    public String getName() {
+        return name;
+    }
+}

my-framework/mvc-practice/src/main/java/org/example/mvc/repository/UserRepository.java

@@ -0,0 +1,21 @@
+package org.example.mvc.repository;
+
+import org.example.mvc.model.User;
+
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class UserRepository {
+
+    private final static Map<String, User> users = new HashMap<>();
+
+    public static void save(User user) {
+        users.put(user.getUserId(), user);
+    }
+
+    public static Collection<User> findAll() {
+        return users.values();
+    }
+}

my-framework/mvc-practice/webapp/user/form.jsp

@@ -0,0 +1,23 @@
+<%@ page contentType="text/html;charset=UTF-8" language="java" %>
+<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
+
+<!DOCTYPE html>
+<html lang="kr">
+<head>
+    <meta charset="UTF-8">
+    <title>form</title>
+</head>
+<body>
+<form method="post" action="/users">
+    <div>
+        <label for="userId">사용자 아이디</label>
+        <input class="form-control" id="userId" name="userId" placeholder="User ID">
+    </div>
+    <div>
+        <label for="name">이름</label>
+        <input class="form-control" id="name" name="name" placeholder="Name">
+    </div>
+    <button type="submit">회원가입</button>
+</form>
+</body>
+</html>