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// MemberDAO.java
package sec04.ex03;
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");
dataFactory = (DataSource) envContext.lookup("jdbc/oracle");
} catch (Exception e) {
e.printStackTrace();
}
}
public List<MemberVO> listMembers() {
List<MemberVO> list = new ArrayList<MemberVO>();
try {
// connDB();
con = dataFactory.getConnection();
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();
}
} */
public void addMember(MemberVO memberVO) {
try {
con = dataFactory.getConnection();
String id = memberVO.getId();
String pwd = memberVO.getPwd();
String name = memberVO.getName();
String email = memberVO.getEmail();
String query = "insert into t_member";
query += "(id,pwd,name,email)";
query += "values(?,?,?,?)";
System.out.println("preparedStatement: " + query);
pstmt = con.prepareStatement(query);
pstmt.setString(1, id);
pstmt.setString(2, pwd);
pstmt.setString(3, name);
pstmt.setString(4, email);
pstmt.executeUpdate();
pstmt.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void delMember(String id) {
try {
con = dataFactory.getConnection();
String query = "delete from t_member" + " where id=?";
System.out.println("preparedStatement: " + query);
pstmt = con.prepareStatement(query);
pstmt.setString(1, id);
pstmt.executeUpdate();
pstmt.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}// MemberServlet.java
package sec04.ex03;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Date;
import java.util.List;
import javax.servlet.RequestDispatcher;
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("/member")
public class MemberServlet extends HttpServlet{
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doHandle(request, response);
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doHandle(request, response);
}
private void doHandle(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
MemberDAO dao = new MemberDAO(); //SQL문으로 조회할 memberDAO 객체 생성
PrintWriter out = response.getWriter();
List<MemberVO> list = dao.listMembers(); // listMember() 메서드로 회원 정보 조회
List membersList = dao.listMembers();
request.setAttribute("membersList", membersList); // 조회된 회원 정보를 ArrayList 객체에 저장한 후 request에 바인딩 함
// 바인딩한 request를 viewMembers 서블릿으로 포워딩
RequestDispatcher dispatch = request.getRequestDispatcher("viewMembers");
dispatch.forward(request, response);
String command = request.getParameter("command");
if (command != null && command.equals("addMember")) {
String _id = request.getParameter("id");
String _pwd = request.getParameter("pwd");
String _name = request.getParameter("name");
String _email = request.getParameter("email");
MemberVO vo = new MemberVO();
vo.setId(_id);
vo.setPwd(_pwd);
vo.setName(_name);
vo.setEmail(_email);
dao.addMember(vo);
}
else if (command != null && command.equals("delMember")) {
String id = request.getParameter("id");
dao.delMember(id);
}
out.print("<html><body>");
out.print("<table border=1><tr align='center' bgcolor='lightgreen'>");
out.print("<td>아이디</td><td>비밀번호</td><td>이름</td><td>이메일</td><td>가입일</td><td>삭제</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><td>" + "<a href='/pro08/member?command=delMember&id=" + id + "'> 삭제 </a></td></tr>");
}
out.print("</table></body></html>");
out.print("<a href='/pro08/memberForm.html'>새 회원 등록하기</a>");
}
}// MemberVO.java
package sec04.ex03;
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;
}
}// ViewServlet.java
package sec04.ex03;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.List;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class ViewServlet
*/
@WebServlet("/viewMembers")
public class ViewServlet extends HttpServlet {
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doHandle(request, response);
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doHandle(request, response);
}
private void doHandle(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
PrintWriter out = response.getWriter();
List membersList = (List) request.getAttribute("membersList"); // 바인딩해서 넘어온 request에서 회원 정보를 가져옴
out.print("<html><body>");
out.print("<table border=1><tr align='center' bgcolor='lightgreen'>");
out.print("<td>아이디</td><td>비밀번호</td><td>이름</td><td>이메일</td><td>가입일</td><td>삭제</td></tr>");
for (int i=0; i<membersList.size(); i++) {
MemberVO memberVO = (MemberVO) membersList.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><td>" + "<a href='/pro08/member?command=delMember&id=" + id + "'>삭제 </a></td></tr>");
}
out.print("</table></body></html>");
out.print("<a href='/pro08/memberForm.html'>새 회원 등록하기");
}
}
ViewSerlvet 클래스는 웹 브라우저에서 화면 기능을 담당, 이러한 기능을 하는 서블릿이 분화되어 발전한 것이 JSP이다.
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