20261029

.classpath

@@ -1,8 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
+	<classpathentry kind="src" path=""/>
+	<classpathentry kind="lib" path="mysql-connector-java-8.0.23.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
-	<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"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

.settings/.jsdtscope

@@ -1,7 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.JRE_CONTAINER"/>
-	<classpathentry kind="con" path="org.eclipse.wst.jsdt.launching.baseBrowserLibrary"/>
-	<classpathentry kind="src" path=""/>
-	<classpathentry kind="output" path=""/>
-</classpath>

.settings/org.eclipse.wst.jsdt.ui.superType.container

@@ -1 +0,0 @@
-org.eclipse.wst.jsdt.launching.JRE_CONTAINER

.settings/org.eclipse.wst.jsdt.ui.superType.name

@@ -1 +0,0 @@
-Global

bin/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>em-jdbc</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
+	</natures>
+</projectDescription>

bin/実行例/このファイルを実行してください.bat

@@ -1,2 +0,0 @@
-java -jar DAO_Simple.jar
-pause

snippet/Snippet.java

@@ -0,0 +1,8 @@
+package snippet;
+
+public class Snippet {
+	public static void main(String[] args) {
+		
+	}
+}
+

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

@@ -1,10 +1,4 @@
-/*
+package src.com.rhizome.example.dao;
- * EmployeeDAO.java
- *   作成	IT-College	2020
- *------------------------------------------------------------
- * Copyright(c) Rhizome Inc. All Rights Reserved.
- */
-package com.rhizome.example.dao;
 
 import java.sql.Connection;
 import java.sql.PreparedStatement;
@@ -13,8 +7,8 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
-import com.rhizome.example.dto.EmployeeDTO;
+import src.com.rhizome.example.dto.EmployeeDTO;
-import com.rhizome.example.util.DbUtil;
+import src.com.rhizome.example.util.DbUtil;
 
 public class EmployeeDAO {
 	private static final String TBL_NAME = "employee";
@@ -27,7 +21,7 @@ public class EmployeeDAO {
 
 	/** DBコネクション */
 	public Connection con;
-	/** DBステートPreparedStatement stmtメント */
+	/** DBステートメント */
 	PreparedStatement stmt;
 	/** 検索結果 */
 	ResultSet rs;
@@ -61,25 +55,129 @@ public class EmployeeDAO {
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				
+				EmployeeDTO dto =
-				//インスタンス生成
+				        new EmployeeDTO();
-				EmployeeDTO emp = new EmployeeDTO();
+
-				
+				    dto.setIdEmployee(
-				emp.setId(rs.getInt("id_employee"));
+				        rs.getInt("ID_EMPLOYEE"));
-				emp.setName(rs.getString("nm_employee"));
+
-				emp.setKana(rs.getString("kn_employee"));
+				    dto.setNmEmployee(
-				emp.setEmail(rs.getString("mail_address"));
+				        rs.getString("NM_EMPLOYEE"));
-				emp.setPass(rs.getString("password"));
+
-				emp.setIdDep(rs.getInt("id_department"));
+				    dto.setKnEmployee(
-				
+				        rs.getString("KN_EMPLOYEE"));
-				rtnList.add(emp);
+
-				
+				    dto.setMailEmployee(
-				
+				        rs.getString("MAIL_ADDRESS"));
+
+				    dto.setPassEmployee(
+				        rs.getString("PASSWORD"));
+
+				    dto.setIdDepartment(
+				        rs.getInt("ID_DEPARTMENT"));
+
+				    rtnList.add(dto);
 			}
 		} finally {
 			DbUtil.closeStatement(this.stmt);
 		}
 		return rtnList;
 	}
+	public  List<EmployeeDTO> selectById(int employeeId) throws SQLException{
+		List<EmployeeDTO>rtnList = new ArrayList<>();
+		
+		java.lang.String sql =
+				"SELECT * FROM employee WHERE id_employee = ?";
+		try {
+			stmt = con.prepareStatement(sql);
+			stmt.setInt(1, employeeId);
+
+	        rs = stmt.executeQuery();
+
+	        while (rs.next()) {
+
+	            EmployeeDTO dto = new EmployeeDTO();
+
+	            dto.setIdEmployee(rs.getInt(ID_EMPLOYEE));
+	            dto.setNmEmployee(rs.getString(NM_EMPLOYEE));
+	            dto.setKnEmployee(rs.getString(KN_EMPLOYEE));
+	            dto.setMailEmployee(rs.getString(MAIL_ADDRESS));
+	            dto.setPassEmployee(rs.getString(PASSWORD));
+	            dto.setIdDepartment(rs.getInt(ID_DEPARTMENT));
+
+	            rtnList.add(dto);
+	        }
+
+	    } finally {
+	        DbUtil.closeStatement(stmt);
+	    }
+
+	    return rtnList;
+		}
+	public int empDelete (int employeeId)throws SQLException{
+		java.lang.String sql =
+				"DELETE FROM employee WHERE id_employee = ?";
+		try {
+			stmt = con.prepareStatement(sql);
+			stmt.setInt(1, employeeId);
+
+			return stmt.executeUpdate();
+		} finally {
+	        DbUtil.closeStatement(stmt);
+
+		}
+	}
+	public int empInsert(String employeeName,String employeeKn,String employeeMail
+			,String employeePass, int departmentId)throws SQLException{
+		java.lang.String sql =
+				"INSERT INTO employee " +
+			            "(nm_employee, kn_employee, mail_address, password, id_department) " +
+			            "VALUES (?, ?, ?, ?, ?)";
+		try {
+			stmt = con.prepareStatement(sql);
+			stmt.setString(1, employeeName);
+			stmt.setString(2, employeeKn);
+	        stmt.setString(3, employeeMail);
+	        stmt.setString(4, employeePass);
+	        stmt.setInt(5, departmentId);
+	        
+	        return stmt.executeUpdate();
+
+	    } finally {
+	        DbUtil.closeStatement(stmt);
+	    }
+		
+
+	}
+
+	public int empUpdate(int employeeId,String employeeName,String employeeKn,String employeeMail
+			,String employeePass, int departmentId)throws SQLException{
+		java.lang.String sql =
+				"UPDATE employee " +
+				        "SET nm_employee = ?, " +
+				        "kn_employee = ?, " +
+				        "mail_address = ?, " +
+				        "password = ?, " +
+				        "id_department = ? " +
+				        "WHERE id_employee = ?";
+		
+		try {
+
+	        stmt = con.prepareStatement(sql);
+
+	        stmt.setString(1, employeeName);
+	        stmt.setString(2, employeeKn);
+	        stmt.setString(3, employeeMail);
+	        stmt.setString(4, employeePass);
+	        stmt.setInt(5, departmentId);
+	        stmt.setInt(6, employeeId);
+
+	        return stmt.executeUpdate();
+
+	    } finally {
+	        DbUtil.closeStatement(stmt);
+	    }
+	
+	}
 
 }

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

@@ -1,50 +1,51 @@
-package com.rhizome.example.dto;
+package src.com.rhizome.example.dto;
 
-//フィールド
 public class EmployeeDTO {
-	private Integer id;
+	private int idEmployee;
-	private String name;
+	private String nmEmployee;
-	private String kana;
+	private String knEmployee;
-	private String email;
+	private String mailEmployee;
-	private String pass;
+	private String passEmployee;
-	private Integer idDep;
+	private int idDepartment;
 	
-	//ゲッター・セッター
+	
-	public Integer getId() {
+	public int getIdEmployee() {
-		return id;
+		return idEmployee;
 	}
-	public String getName() {
+	public void setIdEmployee(int idEmployee) {
-		return name;
+		this.idEmployee = idEmployee;
 	}
-	public String getKana() {
+	public String getNmEmployee() {
-		return kana;
+		return nmEmployee;
 	}
-	public String getEmail() {
+	public void setNmEmployee(String nmEmployee) {
-		return email;
+		this.nmEmployee = nmEmployee;
 	}
-	public String getPass() {
+	public String getKnEmployee() {
-		return pass;
+		return knEmployee;
 	}
-	public Integer getIdDep() {
+	public void setKnEmployee(String knEmployee) {
-		return idDep;
+		this.knEmployee = knEmployee;
 	}
-	public void setId(Integer id) {
+	public String getMailEmployee() {
-		this.id = id;
+		return mailEmployee;
 	}
-	public void setName(String name) {
+	public void setMailEmployee(String mailEmployee) {
-		this.name = name;
+		this.mailEmployee = mailEmployee;
 	}
-	public void setKana(String kana) {
+	public String getPassEmployee() {
-		this.kana = kana;
+		return passEmployee;
 	}
-	public void setEmail(String email) {
+	public void setPassEmployee(String passEmployee) {
-		this.email = email;
+		this.passEmployee = passEmployee;
 	}
-	public void setPass(String pass) {
+	public int getIdDepartment() {
-		this.pass = pass;
+		return idDepartment;
 	}
-	public void setIdDep(Integer idDep) {
+	public void setIdDepartment(int idDepartment) {
-		this.idDep = idDep;
+		this.idDepartment = idDepartment;
 	}
-
+	
+	
+	
 }

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

@@ -1,4 +1,4 @@
-package com.rhizome.example.main;
+package src.com.rhizome.example.main;
 
 import java.sql.Connection;
 import java.sql.SQLException;
@@ -6,9 +6,9 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Scanner;
 
-import com.rhizome.example.dao.EmployeeDAO;
+import src.com.rhizome.example.dao.EmployeeDAO;
-import com.rhizome.example.dto.EmployeeDTO;
+import src.com.rhizome.example.dto.EmployeeDTO;
-import com.rhizome.example.util.DbUtil;
+import src.com.rhizome.example.util.DbUtil;
 
 /**
  * @author IT-College
@@ -54,10 +54,13 @@ public class Main {
 			empSelect();
 			break;
 		case "2":
+			empInsert();
 			break;
 		case "3":
+			empUpdate();
 			break;
 		case "4":
+			empDelete();
 			break;
 		case "9":
 			return;
@@ -87,15 +90,35 @@ public class Main {
 			case "1":
 				empList = empDao.selectAll();
 				break;
+			case "2":
+				
+				String strId = inputCheck("ID", true);
+				int id = Integer.parseInt(strId);
+				empList = empDao.selectById(id);
+				break;	
 			default:
+				
 				return;
 			}
-			for (EmployeeDTO emp : empList) {
+			if(empList.isEmpty()){
-				System.out.println(emp);
+				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.getIdEmployee() + "\t"
+							+ emp.getNmEmployee() + "\t"
+							+ emp.getKnEmployee() + "\t"
+							+ emp.getMailEmployee() + "\t"
+							+ emp.getPassEmployee() + "\t"
+							+ emp.getIdDepartment() + "\t");
+				}
 			}
-		} finally {
+		}finally {
-			DbUtil.closeConnection(empDao.con);
+				DbUtil.closeConnection(empDao.con);
+		 
 		}
+		
 	}
 
 	/**
@@ -147,4 +170,100 @@ public class Main {
 		}
 		return str;
 	}
+	public static void empDelete() throws ClassNotFoundException, SQLException {
+
+	    Connection con = DbUtil.getConnection();
+	    EmployeeDAO empDao = new EmployeeDAO(con);
+
+	    try {
+
+	        String strId = inputCheck("ID", true);
+	        int id = Integer.parseInt(strId);
+
+	        int count = empDao.empDelete(id);
+
+	        if (count == 0) {
+	            System.out.println("入力されたIDの情報は見つかりませんでした。");
+	        } else {
+	            System.out.println("削除しました。");
+	        }
+
+	    } 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 mail = inputCheck("メールアドレス", false);
+	        String pass = inputCheck("パスワード", false);
+	        
+	        int depId = Integer.parseInt(inputCheck("部署ID", true));
+
+	        int count = empDao.empInsert(
+	        		name,
+                    kana,
+                    mail,
+                    pass,
+                    depId);
+
+	        if (count > 0) {
+	            System.out.println("登録が完了しました");
+	        }
+
+	    } finally {
+	        DbUtil.closeConnection(empDao.con);
+	    }
+	}
+	public static void 	empUpdate() throws ClassNotFoundException, SQLException {
+
+	    Connection con = DbUtil.getConnection();
+	    EmployeeDAO empDao = new EmployeeDAO(con);
+	    String strId = inputCheck("ID", true);
+        
+        int id = Integer.parseInt(strId);
+	    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);
+
+	        int depId =
+	                Integer.parseInt(inputCheck("部署ID", true));
+	        
+	        
+			int count = empDao.empUpdate(
+	                id,
+	                name,
+	                kana,
+	                mail,
+	                pass,
+	                depId);
+
+	        if (count > 0) {
+	            System.out.println("更新が完了しました");
+	        } else {
+	            System.out.println("入力されたIDの情報は見つかりませんでした。");
+	        }
+
+	    } finally {
+	        DbUtil.closeConnection(empDao.con);
+	    }
+	}
+	
 }

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

@@ -1,4 +1,4 @@
-package com.rhizome.example.util;
+package src.com.rhizome.example.util;
 
 import java.sql.Connection;
 import java.sql.DriverManager;
@@ -44,23 +44,23 @@ 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 Connection getConnection() {
+	public static Connection getConnection() 
-		try {
+			throws ClassNotFoundException, SQLException{
-
+		
-		Class.forName("com.mysql.cj.jdbc.Driver");
+			if(con != null && !con.isClosed()) {
+				return con;
+			}
+			Class.forName("com.mysql.cj.jdbc.Driver");
+			con = DriverManager.getConnection(
+					DB_URL,
+		            DB_USER,
+		            DB_PASS);
+
+		    return con;
 		
-		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 (ClassNotFoundException e){
-			e.printStackTrace();
-        } catch (SQLException e) {
-            e.printStackTrace();	
-		}
-		return con;
 	}
+		
+		
 	
 
 	/*
@@ -72,15 +72,12 @@ 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(
-		public static void closeStatement(PreparedStatement stmt){
+			PreparedStatement stmt) throws SQLException{
-			try {
+		if(stmt !=null)
-                if (stmt != null) stmt.close();
+			stmt.close();
-            } catch (SQLException e) {
+		
-                e.printStackTrace();
+	}
-		}
-		}
-
 
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
@@ -91,12 +88,9 @@ 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) {
+	public static void closeConnection(Connection con) 
-			try {
+	throws SQLException{
-                if (con != null) con.close();
+		if(con != null)
-            } catch (SQLException e) {
+			con.close();
-                e.printStackTrace();
+	}
-		}
-
-		}
 }