홍상우 미니실습 완료하였습니다.

Java_Practice2/src/ex_241023_cha15/homework/Hsw1009DAO.java

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+package ex_241023_cha15.homework;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Hsw1009DAO {
+    String driver = "oracle.jdbc.driver.OracleDriver";
+    String url = "jdbc:oracle:thin:@localhost:1521:xe";
+    String userid = "scott";
+    String passwd = "tiger";
+	private Object connection;
+
+    public Hsw1009DAO() {
+        try {
+            Class.forName(driver);
+        } catch (ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public boolean insertMember(Hsw1009DTO member) {
+        String insertQuery = "INSERT INTO member501(name, email, password) VALUES (?, ?, ?)";
+        try (Connection connection = DriverManager.getConnection(url, userid, passwd);
+             PreparedStatement preparedStatement = connection.prepareStatement(insertQuery)) {
+
+            connection.setAutoCommit(false);
+
+            preparedStatement.setString(1, member.getName());
+            preparedStatement.setString(2, member.getEmail());
+            preparedStatement.setString(3, member.getPassword());
+
+            int rowsAffected = preparedStatement.executeUpdate();
+            connection.commit();
+
+            return rowsAffected > 0;
+        } catch (SQLException e) {
+            e.printStackTrace();
+            // 롤백을 시도하려면 커넥션을 먼저 열어야 하므로
+            try {
+                if (connection != null) {
+                    ((Connection) connection).rollback();
+                }
+            } catch (SQLException rollbackEx) {
+                rollbackEx.printStackTrace();
+            }
+            return false;
+        }
+    }
+
+    public List<Hsw1009DTO> fetchAllMembers() {
+        List<Hsw1009DTO> members = new ArrayList<>();
+        String query = "SELECT name, email, password FROM members";
+
+        try (Connection connection = DriverManager.getConnection(url, userid, passwd);
+             PreparedStatement preparedStatement = connection.prepareStatement(query);
+             ResultSet resultSet = preparedStatement.executeQuery()) {
+
+            while (resultSet.next()) {
+                Hsw1009DTO member = new Hsw1009DTO(
+                    resultSet.getString("name"),
+                    resultSet.getString("email"),
+                    resultSet.getString("password")
+                );
+                members.add(member);
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+
+        return members;
+    }
+
+	public boolean isEmailExists(String email) {
+		// TODO Auto-generated method stub
+		return false;
+	}
+}
+

Java_Practice2/src/ex_241023_cha15/homework/Hsw1009DTO.java

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+package ex_241023_cha15.homework;
+
+public class Hsw1009DTO {
+	// 모델 정의, 데이터를 
+	// 비지니스 모델 (실제 디비)-> 프레젠테이션 모델(출력 형식)
+	String deptno;  // dept 테이블의 칼럼을 저장하기 위한 인스턴스 변수를 정의.
+	String dname;
+	String loc;
+	private String name;
+	private String email;
+	private String password;
+
+	public Hsw1009DTO() {
+
+	}
+
+	public Hsw1009DTO(String name, String dname, String loc) {
+		super();
+		this.deptno = name;
+		this.dname = dname;
+		this.loc = loc;
+	}
+	public String getDeptno() {
+		return deptno;
+	}
+	public void setDeptno(String deptno) {
+		this.deptno = deptno;
+	}
+	public String getDname() {
+		return dname;
+	}
+	public void setDname(String dname) {
+		this.dname = dname;
+	}
+	public String getLoc() {
+		return loc;
+	}
+	public void setLoc(String loc) {
+		this.loc = loc;
+	}
+
+	public void setDeptno(int int1) {
+		return;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public String getEmail() {
+		return email;
+	}
+
+	public String getPassword() {
+		return password;
+	}
+}
+

Java_Practice2/src/ex_241023_cha15/homework/Hsw1009ProTest.java

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+package ex_241023_cha15.homework;
+
+import javax.swing.*;
+import javax.swing.table.DefaultTableModel;
+import java.awt.*;
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.List;
+
+public class Hsw1009ProTest extends JFrame {
+    private JTextField nameField;
+    private JTextField emailField;
+    private JPasswordField passwordField;
+    private JTable memberTable;
+    private DefaultTableModel tableModel;
+    private Hsw1009DAO memberDAO;
+	private String url;
+	private String userid;
+	private String passwd;
+
+    public Hsw1009ProTest() {
+        setTitle("회원 관리 프로그램 V 1.0.0");
+        setSize(800, 300);
+        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        setLayout(new BorderLayout());
+
+        memberDAO = new Hsw1009DAO();
+
+        JPanel inputPanel = new JPanel(new FlowLayout());
+        inputPanel.add(new JLabel("Name: "));
+        nameField = new JTextField(10);
+        inputPanel.add(nameField);
+
+        inputPanel.add(new JLabel("E-mail: "));
+        emailField = new JTextField(10);
+        inputPanel.add(emailField);
+
+        inputPanel.add(new JLabel("Password: "));
+        passwordField = new JPasswordField(10);
+        inputPanel.add(passwordField);
+
+        JButton addButton = new JButton("Add");
+        JButton fetchButton = new JButton("Search");
+        inputPanel.add(addButton);
+        inputPanel.add(fetchButton);
+
+        add(inputPanel, BorderLayout.NORTH);
+
+        String[] columnNames = { "이름", "이메일", "패스워드" };
+        tableModel = new DefaultTableModel(columnNames, 0);
+        memberTable = new JTable(tableModel);
+        JScrollPane scrollPane = new JScrollPane(memberTable);
+        add(scrollPane, BorderLayout.CENTER);
+
+        addButton.addActionListener(e -> addMember());
+        fetchButton.addActionListener(e -> fetchMembers());
+
+        setVisible(true);
+    }
+
+    private void addMember() {
+        String name = nameField.getText();
+        String email = emailField.getText();
+        String password = new String(passwordField.getPassword());
+
+        if (!name.isEmpty() && !email.isEmpty() && !password.isEmpty()) {
+            try {
+                String hashedPassword = PasswordUtil.hashPassword(password);
+                Hsw1009DTO member = new Hsw1009DTO(name, email, hashedPassword);
+                boolean isSaved = memberDAO.insertMember(member);
+
+                if (isSaved) {
+                    JOptionPane.showMessageDialog(null, "회원 정보가 성공적으로 저장되었습니다.", "저장 성공", JOptionPane.INFORMATION_MESSAGE);
+                    tableModel.addRow(new String[] { name, email, hashedPassword });
+                    nameField.setText("");
+                    emailField.setText("");
+                    passwordField.setText("");
+                } else {
+                    JOptionPane.showMessageDialog(null, "회원 정보 저장에 실패했습니다.", "저장 실패", JOptionPane.ERROR_MESSAGE);
+                }
+            } catch (Exception e) {
+                JOptionPane.showMessageDialog(null, "오류 발생: " + e.getMessage(), "오류", JOptionPane.ERROR_MESSAGE);
+                e.printStackTrace();
+            }
+        } else {
+            JOptionPane.showMessageDialog(null, "이름, 이메일, 패스워드를 모두 입력해주세요.", "입력 오류", JOptionPane.ERROR_MESSAGE);
+        }
+
+        if (memberDAO.isEmailExists(email)) {
+            JOptionPane.showMessageDialog(null, "이미 존재하는 이메일입니다.", "입력 오류", JOptionPane.ERROR_MESSAGE);
+            return;
+        }
+
+    }
+
+    private void fetchMembers() {
+        List<Hsw1009DTO> members = memberDAO.fetchAllMembers();
+        tableModel.setRowCount(0);
+
+        if (members == null || members.isEmpty()) {
+            JOptionPane.showMessageDialog(null, "조회된 회원이 없습니다.", "조회 실패", JOptionPane.INFORMATION_MESSAGE);
+        } else {
+            for (Hsw1009DTO member : members) {
+                tableModel.addRow(new String[] { member.getName(), member.getEmail(), "*****" });
+            }
+            JOptionPane.showMessageDialog(null, "회원 목록이 성공적으로 불러왔습니다.", "조회 성공", JOptionPane.INFORMATION_MESSAGE);
+        }
+    }
+
+    public boolean validateUser(String email, String password) {
+        String hashedInputPassword = PasswordUtil.hashPassword(password);
+        List<Hsw1009DTO> members = memberDAO.fetchAllMembers();
+
+        for (Hsw1009DTO member : members) {
+            if (member.getEmail().equals(email) && member.getPassword().equals(hashedInputPassword)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public boolean isEmailExists(String email) {
+        String query = "SELECT COUNT(*) FROM members WHERE email = ?";
+        try (Connection connection = DriverManager.getConnection(url, userid, passwd);
+             PreparedStatement preparedStatement = connection.prepareStatement(query)) {
+            preparedStatement.setString(1, email);
+            ResultSet resultSet = preparedStatement.executeQuery();
+            if (resultSet.next()) {
+                return resultSet.getInt(1) > 0;
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return false;
+    }
+
+    public static void main(String[] args) {
+        new Hsw1009ProTest();
+    }
+}
+
+
+
+
+