🔍 Controller

/**좋아요 목록 조회*/
@GetMapping("/user/favorite")
public ResponseEntity<List<ResponseProductSummary>> myFavorite(HttpServletRequest request){
    User user = (User) request.getAttribute("user");
    List<ResponseProductSummary> productList = favoriteService.myFavorite(user);

    return (!productList.isEmpty()) ?
            ResponseEntity.status(HttpStatus.OK).body(productList) :
            ResponseEntity.status(HttpStatus.BAD_REQUEST).body(null);
}

유저 객체를 사용해 해당 유저가 좋아요 등록한 상품 목록을 조회

🔍 Service

@Override
@Transactional(readOnly = true)
public List<ResponseProductSummary> myFavorite(User user) {

    return favoriteRepository.findAllFavorite(user.getUsername());
}

🔍 Repository

@Override
public List<ResponseProductSummary> findAllFavorite(String username) {
    BooleanExpression status_user = eqUsername(username);

    if (status_user == null) {
        return null;
    }

    return queryFactory.select(Projections.fields(ResponseProductSummary.class,
favorite.product.id,
favorite.product.name,
favorite.product.price,
favorite.product.favorite,
favorite.product.imgKey
            ))
            .from(favorite)
            .innerJoin(favorite.product,product)
            .innerJoin(favorite.user,user)
            .where(status_user,favorite.product.stock.gt(0))
            .fetch();
}