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// MemberServlet.java
package sec02.ex01;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Date;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/member2")
public class MemberServlet extends HttpServlet{
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html; charset=utf-8");
PrintWriter out = response.getWriter();
MemberDAO dao = new MemberDAO(); //SQL문으로 조회할 memberDAO 객체 생성
List<MemberVO> list = dao.listMembers(); // listMember() 메서드로 회원 정보 조회
out.print("<html><body>");
out.print("<table border=1><tr aligh='center' bgcolor='lightgreen'>");
out.print("<td>아이디</td><td>비밀번호</td><td>이름</td><td>이메일</td><td>가입일</td></tr>");
for(int i=0; i<list.size(); i++) {
MemberVO memberVO = list.get(i);
String id = memberVO.getId();
String pwd = memberVO.getPwd();
String name = memberVO.getName();
String email = memberVO.getEmail();
Date joinDate = memberVO.getJoinDate();
out.print("<tr><td>" + id + "</td><td>" + pwd + "</td><td>" + name + "</td><td>" + email
+ "</td><td>" + joinDate + "</td></tr>");
}
out.print("</table></body></html>");
}
}// MemberDAO.java
package sec02.ex01;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.PreparedStatement;
import java.util.*;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import java.sql.Date;
public class MemberDAO {
/*
private static final String driver = "oracle.jdbc.driver.OracleDriver";
private static final String url = "jdbc:oracle:thin:@127.0.0.1:1521:XE";
private static final String user = "scott";
private static final String pwd = "tiger";
*/
private PreparedStatement pstmt;
private Connection con;
private DataSource dataFactory;
public MemberDAO() {
try {
Context ctx = new InitialContext();
Context envContext = (Context) ctx.lookup("java:/comp/env"); // JNDI에 접근하기 위한 기본 경로(java:/comp/env)를 지정
dataFactory = (DataSource) envContext.lookup("jdbc/oracle"); // 톰캣 context.xml에 설정한 name값인 jdbc/oracle을 이용해 톰캣이 미리 연결한 DataSource를 받아옴
} catch (Exception e) {
e.printStackTrace();
}
}
public List<MemberVO> listMembers() {
List<MemberVO> list = new ArrayList<MemberVO>();
try {
// connDB();
con = dataFactory.getConnection(); // DataSource를 이용해 데이터베이스에 연결
String query = "select * from t_member";
System.out.println("preparedStatement: " + query);
pstmt = con.prepareStatement(query);
ResultSet rs = pstmt.executeQuery(query);
while (rs.next()) {
String id = rs.getString("id");
String pwd = rs.getString("pwd");
String name = rs.getString("name");
String email = rs.getString("email");
Date joinDate = rs.getDate("joinDate");
MemberVO vo = new MemberVO();
vo.setId(id);
vo.setPwd(pwd);
vo.setName(name);
vo.setEmail(email);
vo.setJoinDate(joinDate);
list.add(vo);
}
rs.close();
pstmt.close();
con.close();
} catch (Exception e) {
e.printStackTrace();
}
return list;
}
/*private void connDB() {
try {
Class.forName(driver);
System.out.println("Oracle 드라이버 로딩 성공");
con = DriverManager.getConnection(url, user, pwd);
System.out.println("Connection 생성 성공");
} catch (Exception e) {
e.printStackTrace();
}
} */
}// MemberVO.java
package sec02.ex01;
import java.sql.Date;
public class MemberVO {
private String id;
private String pwd;
private String name;
private String email;
private Date joinDate;
public MemberVO() {
System.out.println("MemberVO 생성자 호출");
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Date getJoinDate() {
return joinDate;
}
public void setJoinDate(Date joinDate) {
this.joinDate = joinDate;
}
}
커넥션풀을 이용해 데이터베이스와 연동한 결과
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