2日目

.classpath

@@ -1,7 +1,8 @@
 <?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

@@ -0,0 +1,7 @@
+<?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

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

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

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

bin/.project

@@ -1,23 +0,0 @@
-<?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

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

snippet/Snippet.java

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

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

@@ -1,4 +1,10 @@
-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;
@@ -7,8 +13,8 @@ import java.sql.SQLException;
 import java.util.ArrayList;
 import java.util.List;
 
-import src.com.rhizome.example.dto.EmployeeDTO;
+import com.rhizome.example.dto.EmployeeDTO;
-import src.com.rhizome.example.util.DbUtil;
+import com.rhizome.example.util.DbUtil;
 
 public class EmployeeDAO {
 	private static final String TBL_NAME = "employee";
@@ -21,7 +27,7 @@ public class EmployeeDAO {
 
 	/** DBコネクション */
 	public Connection con;
-	/** DBステートメント */
+	/** DBステートPreparedStatement stmtメント */
 	PreparedStatement stmt;
 	/** 検索結果 */
 	ResultSet rs;
@@ -55,129 +61,25 @@ public class EmployeeDAO {
 			this.stmt = con.prepareStatement(sql.toString());
 			rs = stmt.executeQuery();
 			while (rs.next()) {
-				EmployeeDTO dto =
-				        new EmployeeDTO();
 				
-				    dto.setIdEmployee(
+				//インスタンス生成
-				        rs.getInt("ID_EMPLOYEE"));
+				EmployeeDTO emp = new EmployeeDTO();
 				
-				    dto.setNmEmployee(
+				emp.setId(rs.getInt("id_employee"));
-				        rs.getString("NM_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"));
 				
-				    dto.setKnEmployee(
+				rtnList.add(emp);
-				        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(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

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

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

@@ -1,4 +1,4 @@
-package src.com.rhizome.example.main;
+package 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 src.com.rhizome.example.dao.EmployeeDAO;
+import com.rhizome.example.dao.EmployeeDAO;
-import src.com.rhizome.example.dto.EmployeeDTO;
+import com.rhizome.example.dto.EmployeeDTO;
-import src.com.rhizome.example.util.DbUtil;
+import com.rhizome.example.util.DbUtil;
 
 /**
  * @author IT-College
@@ -54,13 +54,10 @@ public class Main {
 			empSelect();
 			break;
 		case "2":
-			empInsert();
 			break;
 		case "3":
-			empUpdate();
 			break;
 		case "4":
-			empDelete();
 			break;
 		case "9":
 			return;
@@ -90,35 +87,15 @@ 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;
 			}
-			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(
+				System.out.println(emp);
-							emp.getIdEmployee() + "\t"
-							+ emp.getNmEmployee() + "\t"
-							+ emp.getKnEmployee() + "\t"
-							+ emp.getMailEmployee() + "\t"
-							+ emp.getPassEmployee() + "\t"
-							+ emp.getIdDepartment() + "\t");
-				}
 			}
 		} finally {
 			DbUtil.closeConnection(empDao.con);
-		 
 		}
-		
 	}
 
 	/**
@@ -170,100 +147,4 @@ 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 src.com.rhizome.example.util;
+package 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() {
-			throws ClassNotFoundException, SQLException{
+		try {
 
-			if(con != null && !con.isClosed()) {
-				return con;
-			}
 		Class.forName("com.mysql.cj.jdbc.Driver");
+		
 		con = DriverManager.getConnection(
-					DB_URL,
+                "jdbc:mysql://127.0.0.1:3306/rezodb" // データベース
-		            DB_USER,
+                , "rezouser" // ユーザ
-		            DB_PASS);
+                , "Rezo_0000" // パスワード
-
+            );
-		    return con;
+		}catch (ClassNotFoundException e){
-		
+			e.printStackTrace();
+        } catch (SQLException e) {
+            e.printStackTrace();	
+		}
+		return con;
 	}
-		
-		
 	
 
 	/*
@@ -72,12 +72,15 @@ 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) throws SQLException{
-		if(stmt !=null)
-			stmt.close();
 	
+		public static void closeStatement(PreparedStatement stmt){
+			try {
+                if (stmt != null) 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。
@@ -88,9 +91,12 @@ 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) 
+		public static void closeConnection(Connection con) {
-	throws SQLException{
+			try {
-		if(con != null)
+                if (con != null) con.close();
-			con.close();
+            } catch (SQLException e) {
+                e.printStackTrace();
+		}
+
 		}
 }