뷰쪽.jsp

<form action="find-controller.jsp" method="post">
                             <input type="text" size="20" name="userName" placeholder="이름을 입력해주세//요" required>
                               <br class="clear">
                            <p>전화번호:</p>
                               <input type="text" size="20" name="userNumber" placeholder=" - 를 제외한 번호 전체를 입력해주세요." required>
                                <br class="clear">
                                <p>이메일:</p>
                                <input type="text" size="20" name="userEmail" placeholder=" 이메일을입력해주세요." required>
                                <br class="clear">

                            </div>

                            <input type="submit" value="FIND ID" class="findid">
                                   </form>

컨트롤러.jsp

<%@page import="com.jsp.web.member.model.MemberDAO"%>
<%@page import="com.jsp.web.member.model.MemberVO"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>



    <% request.setCharacterEncoding("utf-8"); %>


<jsp:useBean id="members" class="com.jsp.web.member.model.MemberVO" />
<jsp:setProperty name="members" property="*" />


<%
String name = request.getParameter("userName");
String email = request.getParameter("userEmail");

MemberDAO dao = MemberDAO.getInstance();


String user_id = dao.findId(members);

%>


<%if(user_id == null){ %>
<script type="text/javascript">
alert("존재하지 않은 계정입니다");
history.go(-1);
</script>
<%}else{%>
<script type="text/javascript">
alert("찾으시는 계정은 <%=user_id%>입니다.");
location.href="login1.jsp";
</script>
<%}%>

DB쪽

    @Override
    public String findId(MemberVO member) throws Exception {

        String user_id = null;

        String sql = "SELECT user_id FROM izone_member WHERE user_name=? and user_email=?";

        try {
            conn = ds.getConnection();
            pstmt = conn.prepareStatement(sql);

            pstmt.setString(1, member.getUserName());
            pstmt.setString(2, member.getUserEmail());

            System.out.println("이름 읽어오기:"+ member.getUserName());
            System.out.println("asd: " +member.getUserEmail());
             rs = pstmt.executeQuery();
               if(rs.next()){
                user_id = rs.getString("user_id");
               }

        } catch (Exception e) {
             e.printStackTrace();
        }finally {
            conn.close(); 
            pstmt.close();
            rs.close();


        }

        return user_id;
    }

이름이랑 이메일만 가지고 아이디찾기 만들고있는데 계속 존재하지않는 아이디라고만 뜨는데 어디서 잘못되었는지 확인부탁드립니다.ㅜㅠㅜ