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MemberRepositoryV0 - 회원 조회 추가 public Member findById(String memberId) throws SQLException { String sql = "select * from member where member_id=?"; Connection con = null; PreparedStatement pstmt = null; ResultSet rs = null; try{ con = getConnection(); pstmt = con.prepareStatement(sql); pstmt.setString(1, memberId); rs = pstmt.executeQuery();//select는 executeQuery if (rs.next()){//데이터 있으면 true, 내부..