54. 토큰 만들기

1. JwtUtil 클래스 만들기

• 내가 생성하고 검증할 것이기에 RSA할 필요 없음

• SIGN은 나중에 환경변수(OS변수)로 사용해야 함

package shop.mtcoding.blog._core.utils;

import com.auth0.jwt.JWT;
import com.auth0.jwt.algorithms.Algorithm;
import shop.mtcoding.blog.user.User;

import java.util.Date;

public class JwtUtil {
    // 토큰 생성
    public static String create(User user){ // user 객체가 필요함
        String jwt = JWT.create()
                .withSubject("blog")
                .withExpiresAt(new Date(System.currentTimeMillis() + 1000L * 60L * 60L))
                .withClaim("id", user.getId())
                .withClaim("username", user.getUsername())
                .sign(Algorithm.HMAC512("metacoding")); // 나중에 환경변수(OS변수)로 사용해야 함
        return jwt;
    }
    // 토큰 검증
    public static void verify(){

    }
}

• test 해보기

env: // 바껴도 됨
  java_home: ${JAVA_HOME}

package shop.mtcoding.blog._core.utils;

import org.junit.jupiter.api.Test;
import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
import shop.mtcoding.blog.user.User;

@DataJpaTest
public class JwtUtilTest {
    @Test
    public void create_test() {
        //given
        User user = User. builder ()
                .id(1)
                .username("ssar")
                .build();

        //when
        String jwt = JwtUtil . create (user);
        System.out.println("jwt: " + jwt);
    }
}

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