모든 Todo 기능 H2 데이터베이스와 연결하기

TodoControllerJpa에서 todoService를 사용하는 메서드를 수정하겠습니다.

listAllTodos, addNewTodo, deleteTodo, showUpdateTodoPage, updateTodo

TodoControllerJpa.class

import jakarta.validation.Valid;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes;

import java.time.LocalDate;
import java.util.List;

@Controller
@SessionAttributes("name")
public class TodoControllerJpa {
    private TodoRepository todoRepository;

    public TodoControllerJpa(TodoRepository todoRepository) {
        super();
        this.todoRepository = todoRepository;
    }

    //list-todos
    @RequestMapping("/list-todos")
    public String listAllTodos(ModelMap model) {
        String username = getLoggedInUsername(model);
        List<Todo> todos = todoRepository.findByUsername(username);
        model.addAttribute("todos", todos);

        return "listTodos";
    }

    @RequestMapping(value = "/add-todo", method = RequestMethod.GET)
    public String showNewTodoPage(ModelMap model) {
        String username = getLoggedInUsername(model);
        Todo todo = new Todo(0, username, "", LocalDate.now().plusYears(1), false);
        model.put("todo", todo);
        return "todo";
    }

    @RequestMapping(value = "/add-todo", method = RequestMethod.POST)
    public String addNewTodo(ModelMap model, @Valid Todo todo, BindingResult result) {

        if (result.hasErrors()) {
            return "todo";
        }

        String username = getLoggedInUsername(model);
        todo.setUsername(username);
        todoRepository.save(todo);
        return "redirect:list-todos";
    }

    @RequestMapping("/delete-todo")
    public String deleteTodo(@RequestParam int id) {
        //Delete todo
        todoRepository.deleteById(id);
        return "redirect:list-todos";
    }

    @RequestMapping(value = "/update-todo", method = RequestMethod.GET)
    public String showUpdateTodoPage(@RequestParam int id, ModelMap model) {
        Todo todo = todoRepository.findById(id).get();
        model.addAttribute("todo", todo);
        return "todo";
    }

    @RequestMapping(value = "/update-todo", method = RequestMethod.POST)
    public String updateTodo(ModelMap model, @Valid Todo todo, BindingResult result) {

        if (result.hasErrors()) {
            return "todo";
        }

        String username = getLoggedInUsername(model);
        todo.setUsername(username);
        todoRepository.save(todo);
        return "redirect:list-todos";
    }

    private String getLoggedInUsername(ModelMap model) {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        return authentication.getName();
    }
}

todoService를 사용할 때보다 더 간편해진 걸 확인할 수 있습니다.