Added private java file and made it untracked

.gitignore

@@ -117,7 +117,8 @@ $RECYCLE.BIN/
 *.msix
 *.msm
 *.msp
-
+.idea
+dao/DBCode.java
 # Windows shortcuts
 *.lnk
 

db_java.iml

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file

src/dao/DBCode.java

+package dao;
+
+public class DBCode {
+    public static final String USERNAME = "deok";// DBMS접속 시 아이디
+    public static final String PASSWORD = "deok";// DBMS접속 시 비밀번호
+    public static final String URL = "jdbc:mysql://222.106.63.122:3306/mytestdb";// DBMS접속할 db명
+}

src/dao/MemberDaoImpl.java

 package dao;
 
-import java.sql.Connection;
+import java.sql.*;
 import java.util.ArrayList;
-
 import dto.MemberDto;
 
 public class MemberDaoImpl implements MemberDao {
 	private Connection conn; // DB 커넥션 연결 객체
-	private static final String USERNAME = "root";// DBMS접속 시 아이디
-	private static final String PASSWORD = "1234";// DBMS접속 시 비밀번호
-	private static final String URL = "jdbc:mysql://localhost:3306/aidb";// DBMS접속할 db명
+	private static final String USERNAME = DBCode.USERNAME;// DBMS접속 시 아이디
+	private static final String PASSWORD = DBCode.PASSWORD;// DBMS접속 시 비밀번호
+	private static final String URL = DBCode.URL;// DBMS접속할 db명
 	
 	// 생성자에 연결 
 	public MemberDaoImpl() {
 		// 디비 연결 부분
+		try {
+			Class.forName("com.mysql.cj.jdbc.Driver");
+			conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
+			System.out.println("드라이버 로딩 성공");
+		}catch (Exception e){
+			System.out.println("드라이버 로딩 실패 ");
+			e.printStackTrace();
+			try {
+				conn.close();
+			} catch (SQLException e1) {
+			}
+		}
 	}
 
 	@Override
 	public void insert(MemberDto dto) {
-		// TODO Auto-generated method stub
+		String sql = "INSERT INTO mytestdb.major_table (name, major, email) VALUES (?, ?, ?)";
+
+		PreparedStatement pstmt = null;
+		try {
+			pstmt = conn.prepareStatement(sql);
+			pstmt.setString(1, dto.getName());
+			pstmt.setString(2, dto.getMajor());
+			pstmt.setString(3, dto.getEmail());
+
+			int result = pstmt.executeUpdate();
+			if (result == 1) {
+				System.out.println("데이터 삽입 성공!");
 
 			}
 
-	@Override
-	public MemberDto selectOne(int n) {
-		// TODO Auto-generated method stub
-		return null;
+		} catch (Exception e) {
+			System.out.println("데이터 삽입 실패!");
+		} finally {
+			try {
+				if (pstmt != null && !pstmt.isClosed()) {
+					pstmt.close();
+				}
+			} catch (Exception e2) {
+			}
 		}
 		
-	@Override
-	public ArrayList<MemberDto> selectAll() {
-		// TODO Auto-generated method stub
-		return null;
 	}
 
 	@Override
-	public void update(MemberDto dto) {
-		// TODO Auto-generated method stub
+	public ArrayList<MemberDto> selectAll() {
+		ArrayList<MemberDto> list = new ArrayList<MemberDto>();  // 데이터 담을 그릇
+		String sql = "SELECT * FROM mytestdb.major_table";
+		PreparedStatement pstmt = null;
+		try {
+			pstmt = conn.prepareStatement(sql);
+			ResultSet rs = pstmt.executeQuery();
+			while (rs.next()) {
+				MemberDto dto = new MemberDto();
+				dto.setName(rs.getString("name"));
+				dto.setMajor(rs.getString("major"));
+				dto.setEmail(rs.getString("email"));
+				list.add(dto);
+			}
 
+		} catch (Exception e) {
+			System.out.println("select 메서드 예외발생");
+		} finally {
+			try {
+				if (pstmt != null && !pstmt.isClosed()) {
+					pstmt.close();
+				}
+			} catch (Exception e2) {
 			}
+		}
+		return list;
+	}
+
+
+//	@Override
+//	public void update(MemberDto dto) {
+//		String sql = "UPDATE mytestdb.major_table SET title=? WHERE  num=?";
+//		PreparedStatement pstmt = null;
+//		try {
+//			pstmt = conn.prepareStatement(sql);
+//			pstmt.setString(1, "제목 수정");
+//			pstmt.setInt(2, id);
+//			pstmt.executeUpdate();
+//			System.out.println("수정된 id: " + id);
+//	}
 
 }