20261029

.classpath

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="lib" path="lib/mysql-connector-java-8.0.23.jar"/>
 	<classpathentry kind="lib" path="実行例/DAO_Simple.jar"/>

.project

@@ -6,18 +6,18 @@
 	</projects>
 	<buildSpec>
 		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<name>org.eclipse.jdt.core.javabuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
-		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
 	</natures>
 </projectDescription>

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

@@ -7,30 +7,25 @@
 package com.rhizome.example.dao;
 
 import java.sql.Connection;
-import java.sql.PreparedStatement;
+import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
+import java.sql.Statement;
 import java.util.ArrayList;
 import java.util.List;
 
 import com.rhizome.example.dto.EmployeeDTO;
-import com.rhizome.example.util.DbUtil;
+//import com.rhizome.example.main.EmployeeDTO;
+//実行結果をDTOに格納し、リストに追加
 
 public class EmployeeDAO {
-	private static final String TBL_NAME = "employee";
-	private static final String ID_EMPLOYEE = "id_employee";
-	private static final String NM_EMPLOYEE = "nm_employee";
-	private static final String KN_EMPLOYEE = "kn_employee";
-	private static final String MAIL_ADDRESS = "mail_address";
-	private static final String PASSWORD = "password";
-	private static final String ID_DEPARTMENT = "id_department";
 	
 	/** DBコネクション */
-	public Connection con;
+	//public Connection con;
 	/** DBステートメント */
-	PreparedStatement stmt;
+	//PreparedStatement stmt;
 	/** 検索結果 */
-	ResultSet rs;
+	//ResultSet rs;
 
 	/**
 	 * インスタンス生成時DBコネクション
@@ -38,9 +33,9 @@ public class EmployeeDAO {
 	 * @throws ClassNotFoundException
 	 * @throws SQLException
 	 */
-	public EmployeeDAO(Connection con) {
-		this.con = con;
-	}
+	//public EmployeeDAO(Connection con) {
+		//this.con = con;
+	//}
 
 	/**
 	 * 社員テーブルの情報を全件取得する
@@ -51,135 +46,116 @@ public class EmployeeDAO {
 	 */
 	public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
 		List<EmployeeDTO> rtnList = new ArrayList<>();
-		StringBuilder sql = new StringBuilder();
-		sql.append(" SELECT ");
-		sql.append("    " + "*");
-		sql.append(" FROM ");
-		sql.append("    " + TBL_NAME);
-		try {
 		
-			this.stmt = con.prepareStatement(sql.toString());
-			rs = stmt.executeQuery();
+		Connection con = null;
+        Statement stmt = null;
+        
+		
+        try {
+            // JDBCドライバの読み込み
+            Class.forName("com.mysql.cj.jdbc.Driver");
+
+            // Connectionの生成 
+            con = DriverManager.getConnection(
+                "jdbc:mysql://127.0.0.1:3306/rezodb", // データベース
+                "rezouser",                           // ユーザ名
+                "Rezo_0000"                           // パスワード
+            );
+            
+            String sql = "SELECT * FROM employee";
+            stmt = con.createStatement();
+            ResultSet rs = stmt.executeQuery(sql);
+
+            // 実行結果をDTOに格納し、リストに追加
 			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"));
+				EmployeeDTO emp = new EmployeeDTO();
 				
-				rtnList.add(dto);
+				emp.setId_employee(rs.getInt("id_employee"));
+				emp.setNm_employee(rs.getString("nm_employee"));
+				emp.setKn_employee(rs.getString("kn_employee"));
+				emp.setMail_address(rs.getString("mail_address"));
+				emp.setPassword(rs.getString("password"));
+				emp.setId_department(rs.getInt("id_department"));
 
+				rtnList.add(emp);
 			}
-		} finally {
-			DbUtil.closeStatement​(this.stmt);
-		}
+			
+		} catch (ClassNotFoundException | SQLException e) {
+            e.printStackTrace();
+        } finally {
+            // Statement、Connectionの切断
+            try {
+                if (stmt != null) stmt.close();
+                if (con != null) con.close();
+            } catch (SQLException e) {
+                e.printStackTrace();
+            }
+        }
 		return rtnList;
 	}
 	
-	public java.util.List<EmployeeDTO> selectById​(int id)
-			throws java.sql.SQLException, java.lang.ClassNotFoundException, java.lang.NumberFormatException {
+	//IDによる条件検索
+	public java.util.List<EmployeeDTO> selectById​(int id) throws SQLException, ClassNotFoundException, NumberFormatException{
 		List<EmployeeDTO> rtnList = new ArrayList<>();
-		StringBuilder sql = new StringBuilder();
-		sql.append(" SELECT * FROM ");
-		sql.append(TBL_NAME);
-		sql.append(" WHERE id_employee = ?");
 		
-		try {
+		Connection con = null;
+        Statement stmt = null;
 		
-			this.stmt = con.prepareStatement(sql.toString());
-			stmt.setInt(1, id);
-			rs = stmt.executeQuery();
+        try {
+            // JDBCドライバの読み込み
+            Class.forName("com.mysql.cj.jdbc.Driver");
 
-			while (rs.next()) {
+            // Connectionの生成 
+            con = DriverManager.getConnection(
+                "jdbc:mysql://127.0.0.1:3306/rezodb", // データベース
+                "rezouser",                           // ユーザ名
+                "Rezo_0000"                           // パスワード
+            );
             
-				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"));
+            String sql = "SELECT id_employee FROM employee WHERE id_employee";
+            stmt = con.createStatement();
+            ResultSet rs = stmt.executeQuery(sql);
             
-				rtnList.add(dto);
+         // 実行結果をDTOに格納し、リストに追加
+         			while (rs.next()) {
+         				EmployeeDTO emp = new EmployeeDTO();
          				
-			}
+         				emp.setId_employee(rs.getInt("id_employee"));
+         				emp.setNm_employee(rs.getString("nm_employee"));
+         				emp.setKn_employee(rs.getString("kn_employee"));
+         				emp.setMail_address(rs.getString("mail_address"));
+         				emp.setPassword(rs.getString("password"));
+         				emp.setId_department(rs.getInt("id_department"));
 
-		} finally {
-			DbUtil.closeStatement​(this.stmt);
-		}
+         				rtnList.add(emp);
+         			}
          			
+         			List<EmployeeDTO> selectList = new ArrayList<>();
+
+         			for (EmployeeDTO employee : rtnList) {
+         				if (employee.getPrimaryKeyValue().equals(id)) {
+         					selectList.add(employee);
+         				}
+         			}
+
+         			return selectList;
+            
+         			
+         			
+        } catch (ClassNotFoundException | SQLException e) {
+        e.printStackTrace();
+        } finally {
+        // Statement、Connectionの切断
+        	try {
+        		if (stmt != null) stmt.close();
+        		if (con != null) con.close();
+        	} catch (SQLException e) {
+        		e.printStackTrace();
+        	}
+        }
 		return rtnList;
+       }
 		
 	}
 
-	public void empDelete(int id) throws java.lang.ClassNotFoundException, java.sql.SQLException {
-		StringBuilder sql = new StringBuilder();
-		sql.append(" DELETE FROM ");
-		sql.append(TBL_NAME);
-		sql.append(" WHERE id_employee = ?");
 
-		try {
-			this.stmt = this.con.prepareStatement(sql.toString());
-			this.stmt.setInt(1, id);
-			this.stmt.executeUpdate();
-
-		} finally {
-			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<>();
-		StringBuilder sql = new StringBuilder();
-		sql.append(" INSERT INTO " + TBL_NAME);
-		sql.append("    (nm_employee, kn_employee, mail_address, password, id_department) ");
-		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();
-
-		} finally {
-			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 {
-		StringBuilder sql = new StringBuilder();
-		sql.append(" UPDATE ");
-		sql.append(TBL_NAME);
-		sql.append(" SET ");
-		sql.append(" nm_employee = ?, kn_employee = ?, mail_address = ?, password = ?, id_department = ? ");
-		sql.append(" WHERE 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.setInt(6, id);
-
-			this.stmt.executeUpdate();
-
-		} finally {
-			DbUtil.closeStatement​(this.stmt);
-		}
-	}
-
-}

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

@@ -2,59 +2,59 @@ package com.rhizome.example.dto;
 
 public class EmployeeDTO {
 	
-	private Integer id;
-	private String name;
-	private String kana;
-	private String email;
-	private String pass;
-	private Integer idDep;
+	//Employeeテーブルのカラム分のフィールド
+	private Integer id_employee;
+	private String nm_employee;
+	private String kn_employee;
+	private String mail_address;
+	private String password;
+	private Integer id_department;
 	
-	public Integer getId() {
-		return id;
+	
+	public Integer getId_employee() {
+		return id_employee;
+	}
+	public void setId_employee(Integer id_employee) {
+		this.id_employee = id_employee;
+	}
+	public String getNm_employee() {
+		return nm_employee;
+	}
+	public void setNm_employee(String nm_employee) {
+		this.nm_employee = nm_employee;
+	}
+	public String getKn_employee() {
+		return kn_employee;
+	}
+	public void setKn_employee(String kn_employee) {
+		this.kn_employee = kn_employee;
+	}
+	public String getMail_address() {
+		return mail_address;
+	}
+	public void setMail_address(String mail_address) {
+		this.mail_address = mail_address;
+	}
+	public String getPassword() {
+		return password;
+	}
+	public void setPassword(String password) {
+		this.password = password;
+	}
+	public Integer getId_department() {
+		return id_department;
+	}
+	public void setId_department(Integer id_department) {
+		this.id_department = id_department;
+	}
+	public Object getPrimaryKeyValue() {
+		// TODO 自動生成されたメソッド・スタブ
+		return null;
 	}
 	
-	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

@@ -54,13 +54,10 @@ public class Main {
 			empSelect();
 			break;
 		case "2":
-			empInsert();
 			break;
 		case "3":
-			empUpdate();
 			break;
 		case "4":
-			empDelete();
 			break;
 		case "9":
 			return;
@@ -82,7 +79,7 @@ public class Main {
 	public static void empSelect() throws ClassNotFoundException, SQLException {
 		List<EmployeeDTO> empList = new ArrayList<>();
 		Connection con = DbUtil.getConnection();
-		EmployeeDAO empDao = new EmployeeDAO(con);
+		EmployeeDAO empDao = new EmployeeDAO();
 		System.out.println("1:全検索 2:条件検索 それ以外:戻る");
 		String select = sc.nextLine();
 		try {
@@ -91,119 +88,23 @@ public class Main {
 				empList = empDao.selectAll();
 				break;
 			case "2":
-				String idStr = inputCheck("ID", true);
-				int id = Integer.parseInt(idStr);
-				empList = empDao.selectById​(id);
+				String id = sc.nextLine();//IDを入力
+				int num = Integer.valueOf(id);//String型のIDをint型に変換
+				empList = empDao.selectById​(num);
 				break;
 			default:
 				return;
 			}
 			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_employee() + "\t" 
+                        + emp.getNm_employee() + "\t" 
+                        + emp.getKn_employee() + "\t"
+                        + emp.getMail_address() + "\t" 
+                        + emp.getPassword() + "\t" 
+                        + emp.getId_department());
 			}
-
 		} 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();
 		}
 	}
 
@@ -232,6 +133,9 @@ public class Main {
 	 * @param flg
 	 *            数値チェック可否フラグ
 	 * @return
+	 * @throws SQLException 
+	 * @throws ClassNotFoundException 
+	 * @throws NumberFormatException 
 	 */
 	public static String inputCheck(String titleName, boolean flg) {
 		String str = null;
@@ -251,7 +155,9 @@ public class Main {
 						continue;
 					}
 				}
+				
 			}
+		
 			break;
 		}
 		return str;

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

@@ -2,6 +2,9 @@ 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）
@@ -42,11 +45,26 @@ 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
 	 */
+	//DB接続用メソッドを作成する
+	public static Connection getConnection() throws ClassNotFoundException {
+			//データベースの接続オブジェクトを初期化
+			Connection con = null;
+            // JDBCドライバの読み込み
+            Class.forName("com.mysql.cj.jdbc.Driver");
+
+            // Connectionの生成
+            try {
+				con = DriverManager.getConnection(
+				    "jdbc:mysql://127.0.0.1:3306/rezodb" // データベース
+				    , "rezouser" // ユーザ
+				    , "Rezo_0000" // パスワード
+				);
+			} catch (SQLException e) {
+                e.printStackTrace();
+            }
+           return con;
+     }
 	
-	public static java.sql.Connection getConnection() throws java.lang.ClassNotFoundException, java.sql.SQLException {
-		con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
-		return con;
-	}
 
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
@@ -57,11 +75,14 @@ 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() {
+		PreparedStatement stmt = null;
+		try {
+            if (stmt != null) stmt.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
 		
-	public static void closeStatement​(java.sql.PreparedStatement stmt) throws java.sql.SQLException {
-		if (stmt != null) {
-			stmt.close();
-		}
 	}
 
 	/*
@@ -73,16 +94,12 @@ 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)
-			con.close();
+	public static void closeConnection() {
+		try {
+            if (con != null) con.close();
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
 	}
 
 }