[Chore] 잘못된 파일 수정 변경(#13)

springFirstSeminar/src/main/java/org/sopt/springFirstSeminar/common/jwt/JwtTokenGenerator.java

@@ -0,0 +1,60 @@
+package org.sopt.springFirstSeminar.common.jwt;
+
+import io.jsonwebtoken.*;
+import io.jsonwebtoken.security.Keys;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.crypto.SecretKey;
+import java.util.Base64;
+import java.util.Date;
+
+@Component
+public class JwtTokenGenerator {
+
+    @Value("${jwt.secret}")
+    private String secretKey;
+
+    @Value("${jwt.access-token-expire-time}") //1분
+    private long ACCESS_TOKEN_EXPIRE_TIME;
+
+    @Value("${jwt.refresh-token-expire-time}") //1시간
+    private long REFRESH_TOKEN_EXPIRE_TIME;
+
+    public String generateToken(final Long userId, boolean isAccessToken) {
+        final Date presentDate = new Date();
+        final Date expireDate = generateExpireDataByToken(isAccessToken, presentDate);
+
+        return Jwts.builder()
+                .setHeaderParam(Header.TYPE, Header.JWT_TYPE)
+                .setSubject(String.valueOf(userId))
+                .setIssuedAt(presentDate)
+                .setExpiration(expireDate)
+                .signWith(getSigningKey(), SignatureAlgorithm.HS256) //여기서 어떤 알고리즘을 사용할 지를 명시적으로 적어주는게 좋음, 안 적어주면 라이브러리 기본 설정에 의존하게됨
+                .compact();
+    }
+
+    public JwtParser getJwtParser() {
+        return Jwts.parserBuilder()
+                .setSigningKey(getSigningKey())
+                .build();
+    }
+
+    private Date generateExpireDataByToken(final boolean isAccessToken, Date presentDate) {
+        return new Date(presentDate.getTime() + setExpireTimeByToken(isAccessToken));
+    }
+
+    //토근에 따라 만료시간 다름
+    private long setExpireTimeByToken(final boolean isAccessToken) {
+        if (isAccessToken) {
+            return ACCESS_TOKEN_EXPIRE_TIME;
+        } else {
+            return REFRESH_TOKEN_EXPIRE_TIME;
+        }
+    }
+
+    public SecretKey getSigningKey() {
+        String encodedKey = Base64.getEncoder().encodeToString(secretKey.getBytes()); //SecretKey 통해 서명 생성
+        return Keys.hmacShaKeyFor(encodedKey.getBytes());   //일반적으로 HMAC (Hash-based Message Authentication Code) 알고리즘 사용
+    }
+}