빈 등록

Component 에 이름없이 써보고 싶은데

package hello.thymeleaf.basic;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.HttpSession;
import lombok.Data;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Controller
@RequestMapping("/basic")
public class BasicController {

    @GetMapping("text-basic")
    public String textBasic(Model model) {
        model.addAttribute("data", "Hello Spring!");
        return "basic/text-basic";
    }

    @GetMapping("text-unescaped")
    public String textUnescape(Model model) {
        model.addAttribute("data", "Hello <b>Spring!</b>");
        return "basic/text-unescaped";
    }

    @GetMapping("/variable")
    public String variable(Model model) {
        User userA = new User("userA", 10);
        User userB = new User("userB", 20);

        List<User> list = new ArrayList<>();
        list.add(userA);
        list.add(userB);

        Map<String, User> map = new HashMap<>();
        map.put("userA", userA);
        map.put("userB", userB);

        model.addAttribute("user", userA);
        model.addAttribute("users", list);
        model.addAttribute("userMap", map);

        return "basic/variable";
    }

    @GetMapping("/basic-objects")
    public String basicObjects(Model model, HttpServletRequest request,
                               HttpServletResponse response, HttpSession session) {
        session.setAttribute("sessionData", "Hello Session");
        model.addAttribute("request", request);
        model.addAttribute("response", response);
        model.addAttribute("servletContext", request.getServletContext());
        return "basic/basic-objects";
    }

    /*
    Component helloBean을 지정한 이유 : 지정하지 않으면 HelloBean 의 빈 이름은 BasicController.HelloBean 으로 설정되기 때문
    helloBean을 지정하기 싫으면 내부 클래스 말고 외부에 클래스를 만들어서 사용하면 된다.
    */


    @Data
    static class User {
        private String username;
        private int age;

        public User(String username, int age) {
            this.username = username;
            this.age = age;
        }
    }
}
@Component
public class HelloBean {
    public String hello(String data) {
        return "Hello " + data;
    }
}

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