이클립스랑 MongoDB 연동 오류 좀 해결해주세요...

Question

login.jsp를 실행해서 MongoDB에 있는 데이터를 입력하고 Login을 누르면 아래와 같은 오류가 뜹니다..login 뿐만 아니라 register.jsp(회원가입)에서도 그렇고 그냥 Controller 부분에서 다 저런 오류가 납니다어떻게 해결해야할까요??제가 초보여서 너무 어렵더라구요... 자세히 알려주시면 정말 감사드리겠습니다..코드#login.jsp Login #LoginController.java package controller; 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 java.io.IOException; @WebServlet("/loginAction") // 요청 URL 패턴 public class LoginController extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 로그인 처리 로직 String userID = request.getParameter("userID"); String userPassword = request.getParameter("userPassword"); // 로그인 처리 후 리다이렉트 또는 포워드 if (userID.equals("root") && userPassword.equals("20211218")) { response.sendRedirect("loginSuccess.jsp"); } else { response.sendRedirect("loginFail.jsp"); } } } #UserController.java package controller; import dao.UserDAO; import model.User; 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 java.io.IOException; @WebServlet("/Shop/UserController") // 요청 URL 패턴 public class UserController extends HttpServlet { protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 사용자 처리 로직 response.getWriter().println("UserController is working!"); } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // 처리 로직 response.getWriter().println("Post method of UserController is working!"); } }#MongoDBConnection.java package dao; import com.mongodb.client.MongoClient; import com.mongodb.client.MongoClients; import com.mongodb.client.MongoDatabase; public class MongoDBConnection { private static final String URI = "mongodb://localhost:27017"; private static final String DATABASE_NAME = "recommend"; private static MongoDatabase database; public static MongoDatabase getDatabase() { if (database == null) { MongoClient mongoClient = MongoClients.create(URI); database = mongoClient.getDatabase(DATABASE_NAME); } return database; } } #UserDAO.java package dao; import com.mongodb.client.MongoCollection; import com.mongodb.client.MongoDatabase; import model.User; import org.bson.Document; public class UserDAO { private MongoCollection collection; public UserDAO() { MongoDatabase database = MongoDBConnection.getDatabase(); collection = database.getCollection("user"); } public void addUser(User user) { Document doc = new Document("userID", user.getUserID()) .append("userPassword", user.getUserPassword()) .append("userName", user.getUserName()) .append("userGender", user.getUserGender()) .append("userAge", user.getUserAge()) .append("userHeight", user.getUserHeight()) .append("userWidth", user.getUserWidth()) .append("userlikeShop", user.getUserlikeShop()) .append("userlikeStyle", user.getUserlikeStyle()); collection.insertOne(doc); } // Other methods like findUserByID, login validation, etc. } # web.xml

LoginController

controller.LoginController

1

RegisterController

controller.RegisterController

2

UserController

controller.UserController

3

LoginController

/loginAction

RegisterController

/registerAction

UserController

/Shop/UserController

login.jsp

이클립스랑 MongoDB 연동 오류 좀 해결해주세요...

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