1030自主学習

sql/CreateTable-MySQL.sql

@@ -37,3 +37,4 @@ INSERT INTO department (nm_department) VALUES ('経理部');
 INSERT INTO department (nm_department) VALUES ('システム開発事業部');
 INSERT INTO department (nm_department) VALUES ('教育事業部');
 INSERT INTO department (nm_department) VALUES ('営業企画部');
+

src/com/rhizome/example/dao/EmployeeDAO.java

@@ -61,124 +61,129 @@ public class EmployeeDAO {
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				EmployeeDTO dto = new EmployeeDTO();
-				dto.setId(rs.getInt("id_employee"));
-				dto.setName(rs.getString("nm_employee"));
-				dto.setKana(rs.getString("kn_employee"));
-				dto.setEmail(rs.getString("mail_address"));
-				dto.setPass(rs.getString("password"));
-				dto.setIdDep(rs.getInt("id_department"));
-
-				rtnList.add(dto);
+				EmployeeDTO emp = new EmployeeDTO();
+				emp.setId(rs.getInt("id_employee"));
+                emp.setName(rs.getString("nm_employee"));
+                emp.setKana(rs.getString("kn_employee"));
+                emp.setEmail(rs.getString("mail_address"));
+                emp.setPass(rs.getString("password"));
+                emp.setIdDep(rs.getInt("id_department"));
                 
+                rtnList.add(emp);
 			}
 		} finally {
-			DbUtil.closeStatement​(this.stmt);
+			DbUtil.closeStatement(this.stmt);
 		}
 		return rtnList;
 	}
 
-	public java.util.List<EmployeeDTO> selectById​(int id)
-			throws java.sql.SQLException, java.lang.ClassNotFoundException, java.lang.NumberFormatException {
+	//指定されたIDの社員データを取得する
+	public  List<EmployeeDTO> selectById(int id_employee)throws SQLException, ClassNotFoundException{
 		List<EmployeeDTO> rtnList = new ArrayList<>();
 		StringBuilder sql = new StringBuilder();
-		sql.append(" SELECT * FROM ");
-		sql.append(TBL_NAME);
-		sql.append(" WHERE id_employee = ?");
+		sql.append(" SELECT ");
+		sql.append("    " + "*");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append(" ID_EMPLOYEE = ?");
 		
 		try {
-
 			this.stmt = con.prepareStatement(sql.toString());
-			stmt.setInt(1, id);
+			this.stmt.setInt(1,id_employee );
 			rs = stmt.executeQuery();
-
 			while (rs.next()) {
+				EmployeeDTO emp = new EmployeeDTO();
+				emp.setId(rs.getInt("id_employee"));
+                emp.setName(rs.getString("nm_employee"));
+                emp.setKana(rs.getString("kn_employee"));
+                emp.setEmail(rs.getString("mail_address"));
+                emp.setPass(rs.getString("password"));
+                emp.setIdDep(rs.getInt("id_department"));
                 
-				EmployeeDTO dto = new EmployeeDTO();
-				dto.setId(rs.getInt("id_employee"));
-				dto.setName(rs.getString("nm_employee"));
-				dto.setKana(rs.getString("kn_employee"));
-				dto.setEmail(rs.getString("mail_address"));
-				dto.setPass(rs.getString("password"));
-				dto.setIdDep(rs.getInt("id_department"));
-
-				rtnList.add(dto);
-
+                rtnList.add(emp);
 			}
-
 		}finally {
-			DbUtil.closeStatement​(this.stmt);
+			DbUtil.closeStatement(this.stmt);
 		}
-
 		return rtnList;
-
 	}
 	
-	public void empDelete(int id) throws java.lang.ClassNotFoundException, java.sql.SQLException {
+	//指定された社員のデータを削除する
+	public  void empDelete(int id_employee)throws SQLException, ClassNotFoundException{
+		//SQL文の作成
 		StringBuilder sql = new StringBuilder();
-		sql.append(" DELETE FROM ");
-		sql.append(TBL_NAME);
-		sql.append(" WHERE id_employee = ?");
+		sql.append(" DELETE ");
+		sql.append("    ");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append(" ID_EMPLOYEE = ?");
 		
 		try {
-			this.stmt = this.con.prepareStatement(sql.toString());
-			this.stmt.setInt(1, id);
-			this.stmt.executeUpdate();
-
+			//SQL文の組み立て結果を保存
+			this.stmt = con.prepareStatement(sql.toString());
+			//?に代入
+			this.stmt.setInt(1,id_employee );
+			//削除命令
+			stmt.executeUpdate();
 	}finally {
-			DbUtil.closeStatement​(this.stmt);
+		DbUtil.closeStatement(this.stmt);
 	}
 }
 	
-	public void empInsert​(java.lang.String name, java.lang.String kana, java.lang.String mail, java.lang.String pass,
-			int depId) throws java.lang.NumberFormatException, java.sql.SQLException, java.lang.ClassNotFoundException {
-		//List<EmployeeDTO> rtnList = new ArrayList<>();
+	public  void empInsert(String name, String kana, String email, 
+			String password, Integer idDep)throws SQLException, ClassNotFoundException{
 		StringBuilder sql = new StringBuilder();
-		sql.append(" INSERT INTO " + TBL_NAME);
-		sql.append("    (nm_employee, kn_employee, mail_address, password, id_department) ");
+		sql.append(" INSERT ");
+		sql.append("    " + " INTO ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" ( ");
+		sql.append("    " + NM_EMPLOYEE + ", " + KN_EMPLOYEE + ", " +
+		MAIL_ADDRESS + ", " + PASSWORD + ", " + ID_DEPARTMENT);
+		sql.append(" ) ");
+
 		sql.append(" VALUES ");
 		sql.append("    ( ?, ?, ?, ?, ?)  "); 
 		
 		try {
 			this.stmt = con.prepareStatement(sql.toString());
-
 			this.stmt.setString(1,name );
 			this.stmt.setString(2,kana );
-			this.stmt.setString(3, mail);
-			this.stmt.setString(4, pass);
-			this.stmt.setInt(5, depId);
-
-			this.stmt.executeUpdate();
-
+			this.stmt.setString(3,email );
+			this.stmt.setString(4,password );
+			this.stmt.setInt(5,idDep );
+			stmt.executeUpdate();
 		}finally {
-			DbUtil.closeStatement​(this.stmt);
+			DbUtil.closeStatement(this.stmt);
 		}
 	}
 	
-	public void empUpdate​(int id, java.lang.String name, java.lang.String kana, java.lang.String mail,
-			java.lang.String pass, int depId)
-			throws java.lang.ClassNotFoundException, java.sql.SQLException, java.lang.NumberFormatException {
+	public void empUpdate(Integer id, String name, String kana, String email, 
+			String password, Integer idDep)throws SQLException, ClassNotFoundException{
 		StringBuilder sql = new StringBuilder();
 		sql.append(" UPDATE ");
-		sql.append(TBL_NAME);
+		sql.append("    " + TBL_NAME);
 		sql.append(" SET ");
-		sql.append(" nm_employee = ?, kn_employee = ?, mail_address = ?, password = ?, id_department = ? ");
-		sql.append(" WHERE id_employee = ? ");
+		sql.append("	" + NM_EMPLOYEE + "= ?,");
+		sql.append("	" + KN_EMPLOYEE + "= ?,");
+		sql.append("	" + MAIL_ADDRESS + "= ?,");
+		sql.append("	" + PASSWORD + "= ?,");
+		sql.append("	" + ID_DEPARTMENT + "= ?");
+		sql.append(" WHERE ");
+		sql.append(ID_EMPLOYEE + "= ?");
 		
 		try {
 			this.stmt = con.prepareStatement(sql.toString());
-
 			this.stmt.setString(1,name );
 			this.stmt.setString(2,kana );
-			this.stmt.setString(3, mail);
-			this.stmt.setString(4, pass);
-			this.stmt.setInt(5, depId);
+			this.stmt.setString(3,email );
+			this.stmt.setString(4,password );
+			this.stmt.setInt(5,idDep );
 			this.stmt.setInt(6, id);
-
-			this.stmt.executeUpdate();
-
+			stmt.executeUpdate();
 		}finally {
-			DbUtil.closeStatement​(this.stmt);
+			DbUtil.closeStatement(this.stmt);
 		}
 	}
 	

src/com/rhizome/example/dto/EmployeeDTO.java

@@ -1,7 +1,6 @@
 package com.rhizome.example.dto;
 
 public class EmployeeDTO {
-
 	private Integer id;
     private String name;
     private String kana;
@@ -12,49 +11,37 @@ public class EmployeeDTO {
 	public Integer getId() {
 		return id;
 	}
-
 	public void setId(Integer id) {
 		this.id = id;
 	}
-
 	public String getName() {
 		return name;
 	}
-
 	public void setName(String name) {
 		this.name = name;
 	}
-
 	public String getKana() {
 		return kana;
 	}
-
 	public void setKana(String kana) {
 		this.kana = kana;
 	}
-
 	public String getEmail() {
 		return email;
 	}
-
 	public void setEmail(String email) {
 		this.email = email;
 	}
-
 	public String getPass() {
 		return pass;
 	}
-
 	public void setPass(String pass) {
 		this.pass = pass;
 	}
-
 	public Integer getIdDep() {
 		return idDep;
 	}
-
 	public void setIdDep(Integer idDep) {
 		this.idDep = idDep;
 	}
-
 }

src/com/rhizome/example/main/Main.java

@@ -91,119 +91,23 @@ public class Main {
 				empList = empDao.selectAll();
 				break;
 			case "2":
-				String idStr = inputCheck("ID", true);
-				int id = Integer.parseInt(idStr);
-				empList = empDao.selectById​(id);
+				String strId =inputCheck("ID", true);
+				int ID = Integer.parseInt(strId);
+				empList = empDao.selectById(ID);
 				break;
 			default:
 				return;
 			}
+			if(empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+			}else{
 			for (EmployeeDTO emp : empList) {
-				System.out.println(
-
-						emp.getId() + "\t" +
-								emp.getName() + "\t" +
-								emp.getKana() + "\t" +
-								emp.getEmail() + "\t" +
-								emp.getPass() + "\t" +
-								emp.getIdDep()
-
-				);
+				System.out.println(emp.getId() + "\t" + emp.getName() + "\t" + 
+					emp.getKana() + "\t" + emp.getEmail() + "\t" + emp.getPass() + "\t" + emp.getIdDep());
+			}
 			}
-
 		} finally {
-			DbUtil.closeConnection​(empDao.con);
-		}
-	}
-
-	public static void empInsert()
-			throws java.lang.NumberFormatException, java.lang.ClassNotFoundException, java.sql.SQLException {
-		//List<EmployeeDTO> empList = new ArrayList<>();
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-
-		try {
-
-			String name = inputCheck("社員名", false);
-			String kana = inputCheck("フリガナ", false);
-			String mail = inputCheck("メールアドレス", false);
-			String pass = inputCheck("パスワード", false);
-			String depIdstr = inputCheck("部署ID", true);
-
-			int depId = Integer.parseInt(depIdstr);
-
-			System.out.println("登録が完了しました");
-
-			empDao.empInsert​(name, kana, mail, pass, depId);
-
-		} finally {
-			DbUtil.closeConnection​(empDao.con);
-		}
-
-	}
-
-	public static void empUpdate()
-			throws java.lang.NumberFormatException, java.lang.ClassNotFoundException, java.sql.SQLException {
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-
-		try {
-
-			String idstr = inputCheck("ID", true);
-			int id = Integer.parseInt(idstr);
-
-			List<EmployeeDTO> checkList = empDao.selectById​(id);
-			if (checkList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-				return;
-			}
-
-			String name = inputCheck("社員名", false);
-			String kana = inputCheck("フリガナ", false);
-			String mail = inputCheck("メールアドレス", false);
-			String pass = inputCheck("パスワード", false);
-			String depIdstr = inputCheck("部署ID", true);
-
-			int depId = Integer.parseInt(depIdstr);
-
-			empDao.empUpdate​(id, name, kana, mail, pass, depId);
-
-			System.out.println("更新が完了しました");
-
-		} finally {
-			DbUtil.closeConnection​(empDao.con);
-		}
-
-	}
-
-	public static void empDelete() throws ClassNotFoundException, SQLException {
-		//List<EmployeeDTO> empList = new ArrayList<>();
-		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
-
-		try {
-
-			String idStr = inputCheck("ID", true);
-			int id = Integer.parseInt(idStr);
-
-			List<EmployeeDTO> checkList = empDao.selectById​(id);
-			if (checkList.size() == 0) {
-				System.out.println("入力された値で情報がみつかりませんでした");
-				return;
-			}
-
-			System.out.println("指定されたIDの情報を削除します？ Y/y");
-			System.out.println("（Y/y以外の入力であればキャンセル）");
-			String yY = sc.nextLine();
-			if (!"y".equals(yY) && !"Y".equals(yY)) {
-				System.out.println("削除をキャンセルしました");
-				return;
-			}
-			empDao.empDelete(id);
-			System.out.println("削除が完了しました");
-
-		} finally {
-			DbUtil.closeConnection​(empDao.con);
+			DbUtil.closeConnection(empDao.con);
 		}
 	}
 
@@ -256,4 +160,81 @@ public class Main {
 		}
 		return str;
 	}
+	
+	public static void empDelete() throws ClassNotFoundException, SQLException {
+		//リスト作成
+		List<EmployeeDTO> empList = new ArrayList<>();
+		//DB接続
+		Connection con = DbUtil.getConnection();
+		//DAOインスタンス生成
+		EmployeeDAO empDao = new EmployeeDAO(con);
+		try {
+			//入力された文字列をdelIdに保存
+			String delId =inputCheck("ID", true);
+			//入力された文字列を整数に変換して保存
+			int ID = Integer.parseInt(delId);
+			//入力されたIDに一致するデータを保存
+			empList = empDao.selectById(ID);
+			//リストが空＝一致なし
+			if(empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+			}else {
+				System.out.println("指定されたIDの情報を削除します？ Y/y");
+				//削除の同意受付
+				String agr = sc.nextLine();
+				//同意が得られたら
+				if("Y".equals(agr) || "y".equals(agr)) {
+					//削除メソッド実行し削除
+					empDao.empDelete(ID);
+					System.out.println("削除が完了しました");
+				}
+			}
+		}finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+	}
+	
+	public static void empInsert() throws ClassNotFoundException, SQLException {
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+		try {
+			String name = inputCheck("社員名",false);
+			String kana = inputCheck("フリガナ", false);
+			String email = inputCheck("メールアドレス", false);
+			String password = inputCheck("パスワード", false);
+			String depId = inputCheck("部署ID", true);
+			int dID = Integer.parseInt(depId);
+			
+			empDao.empInsert(name,kana,email,password,dID);
+			System.out.println("登録が完了しました");
+	}finally {
+		DbUtil.closeConnection(empDao.con);
+		}
+	}
+	public static void empUpdate() throws ClassNotFoundException, SQLException{
+		List<EmployeeDTO> empList = new ArrayList<>();
+		Connection con = DbUtil.getConnection();
+		EmployeeDAO empDao = new EmployeeDAO(con);
+		try {
+			String delId =inputCheck("ID", true);
+			int ID = Integer.parseInt(delId);
+			empList = empDao.selectById(ID);
+			if(empList.isEmpty()) {
+				System.out.println("入力された値で情報がみつかりませんでした");
+			return;
+			}
+			
+			String name = inputCheck("社員名",false);
+			String kana = inputCheck("フリガナ", false);
+			String email = inputCheck("メールアドレス", false);
+			String password = inputCheck("パスワード", false);
+			String depId = inputCheck("部署ID", true);
+			int dID = Integer.parseInt(depId);
+			
+			empDao.empUpdate(ID,name,kana,email,password,dID);
+			System.out.println("更新が完了しました");
+		}finally {
+			DbUtil.closeConnection(empDao.con);
+		}
+	}
 }

src/com/rhizome/example/util/DbUtil.java

@@ -2,6 +2,8 @@ package com.rhizome.example.util;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
 
 public class DbUtil {
 	// 定数定義（共通）
@@ -42,9 +44,13 @@ public class DbUtil {
 	 * 				  生成されたConnectionを返却する
 	 * 				  ※Connection生成には上記の定数を活用してください
 	 */
-
-	public static java.sql.Connection getConnection() throws java.lang.ClassNotFoundException, java.sql.SQLException {
-		con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
+		public static Connection getConnection() throws ClassNotFoundException, SQLException{
+			Class.forName("com.mysql.cj.jdbc.Driver");
+			con = DriverManager.getConnection(
+					"jdbc:mysql://127.0.0.1:3306/rezodb",
+					"rezouser",
+					"Rezo_0000"
+					);
 			return con;
 		}
 
@@ -57,8 +63,7 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のDBステートメントがnullでない場合、そのDBステートメントをクローズする
 	 */
-
-	public static void closeStatement​(java.sql.PreparedStatement stmt) throws java.sql.SQLException {
+		public static void closeStatement(PreparedStatement stmt) throws SQLException{
 			if(stmt != null) {
 				stmt.close();
 			}
@@ -73,16 +78,10 @@ public class DbUtil {
 	 * 例外			：SQLException
 	 * 処理			：引数のコネクションがnullでない場合、そのコネクションを切断する
 	 */
-
-	//public static void closeConnection(Connection con) throws SQLException {
-	//if (con != null) {
-	//con.close();
-	//}
-	//
-
-	public static void closeConnection​(java.sql.Connection con) throws java.sql.SQLException {
-		if (con != null)
+		public static void closeConnection(Connection con) throws SQLException{
+			if(con != null) {
 				con.close();
 			}
+		}
 
 }