라우터(디스패치) / 컨트롤러

import controller.BankController;
import dao.BankDAO;

public class BankApp {
    public static void main(String[] args) {
        String url = "selectAll";

        BankDAO dao = new BankDAO();
        BankController con = new BankController(dao);
        Dispatcher dis = new Dispatcher(con);
        dis.route(url);

    }
}

import controller.BankController;
import lombok.AllArgsConstructor;

//책임 : 라우팅, 적절한 컨트롤러 찾기

@AllArgsConstructor
public class Dispatcher {

    //컴포지션
    private BankController con;

    public void route(String url) {

        //라우터, 디스패쳐
        if (url.equals("insert")) {
            con.insert();
        } else if (url.equals("delete")) {
            con.delete();
        } else if (url.equals("update")) {
            con.update();
        } else if (url.equals("selectOne")) {
            con.selectOne();
        } else if (url.equals("selectAll")) {
            con.selectAll();
        }

    }
}

package controller;

// 책임 : 유효성 검사(바디데이터), 파싱(바디데이터), 적절한 DAO 찾기

import dao.BankDAO;
import lombok.AllArgsConstructor;

@AllArgsConstructor
public class BankController {

    private BankDAO dao;

    public void insert() {
        // 1. 파싱 (split 그거.. 짤라내는 것)

        // 2. 유효성 검사 (비번을 4자만 받아야하는데 5천자 받을 수도 있잖아)

        // 3. DAO 찾기
        System.out.println("controller : insert");
        dao.insert("1234", 1000);
    }

    public void delete() {
        System.out.println("controller : delete");
        dao.deleteByNumber(1);
    }

    public void update() {
        System.out.println("controller : update");
        dao.updateByNumber(1000,1);
    }

    public void selectOne() {
        System.out.println("controller : selectOne");
        dao.selectByNumber(1);
    }

    public void selectAll() {
        System.out.println("controller : selectAll");
        dao.selectAll();
    }

}