1 Commits

Author SHA1 Message Date
m-endo
1c04363bb7 2段階目完了 2026-09-30 13:37:36 +09:00
10 changed files with 128 additions and 32 deletions

8
.classpath Normal file
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@@ -0,0 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<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>

1
.gitignore vendored Normal file
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@@ -0,0 +1 @@
/bin/

23
.project Normal file
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@@ -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>

7
.settings/.jsdtscope Normal file
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@@ -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>

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

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@@ -0,0 +1 @@
Global

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@@ -13,6 +13,7 @@ import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.rhizome.example.dto.EmployeeDTO;
import com.rhizome.example.util.DbUtil;
public class EmployeeDAO {
@@ -48,8 +49,8 @@ public class EmployeeDAO {
* @throws SQLException
* @throws ClassNotFoundException
*/
public List<String> selectAll() throws SQLException, ClassNotFoundException {
List<String> rtnList = new ArrayList<>();
public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
List<EmployeeDTO> rtnList = new ArrayList<>();
StringBuilder sql = new StringBuilder();
sql.append(" SELECT ");
sql.append(" " + "*");
@@ -60,7 +61,15 @@ public class EmployeeDAO {
this.stmt = con.prepareStatement(sql.toString());
rs = stmt.executeQuery();
while (rs.next()) {
rtnList.add(rs.getString(NM_EMPLOYEE));
//インスタンス生成
EmployeeDTO dto = new EmployeeDTO();
dto.setId_employee(rs.getInt("id_employee"));
dto.setNm_employee(rs.getString("nm_employee"));
dto.setKn_employee(rs.getString("kn_employee"));
dto.setMail_address(rs.getString("mail_address"));
dto.setPassword(rs.getString("password"));
dto.setId_department(rs.getInt("id_department"));
rtnList.add(dto);
}
} finally {
DbUtil.closeStatement(this.stmt);

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@@ -0,0 +1,61 @@
package com.rhizome.example.dto;
public class EmployeeDTO {
//フィールド宣言
private Integer id_employee;//社員ID
private String nm_employee;//社員名
private String kn_employee;//社員名カナ
private String mail_address;//メールアドレス
private String password;//パスワード
private Integer id_department;//部署ID
//getter/setter
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;
}
}

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@@ -7,6 +7,7 @@ import java.util.List;
import java.util.Scanner;
import com.rhizome.example.dao.EmployeeDAO;
import com.rhizome.example.dto.EmployeeDTO;
import com.rhizome.example.util.DbUtil;
/**
@@ -76,7 +77,7 @@ public class Main {
* @throws SQLException
*/
public static void empSelect() throws ClassNotFoundException, SQLException {
List<String> empList = new ArrayList<>();
List<EmployeeDTO> empList = new ArrayList<>();
Connection con = DbUtil.getConnection();
EmployeeDAO empDao = new EmployeeDAO(con);
System.out.println("1:全検索 2:条件検索 それ以外:戻る");
@@ -89,7 +90,7 @@ public class Main {
default:
return;
}
for (String emp : empList) {
for (EmployeeDTO emp : empList) {
System.out.println(emp);
}
} finally {

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@@ -44,18 +44,10 @@ 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() throws ClassNotFoundException, SQLException {
try {
Class.forName(DB_DRIVER);
return DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
} catch (ClassNotFoundException e) {
System.out.println();
throw e;
} catch (SQLException e) {
System.out.println();
throw e;
}
public static Connection getConnection() throws SQLException {
//データベースへの接続
con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
return con;
}
/*
@@ -67,13 +59,10 @@ 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) {
public static void closeStatement(PreparedStatement stmt) throws SQLException {
//nullチェック
if (stmt != null) {
try {
stmt.close();
} catch (SQLException e) {
System.out.println();
}
}
}
@@ -86,16 +75,11 @@ 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 {
//nullチェック
if (con != null) {
try {
if (!con.isClosed()) {
con.close();
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}
}
}