3 Commits

Author SHA1 Message Date
d8d9f1d9b7 提出物です 2026-09-30 16:24:35 +09:00
65ff97be06 2段階目終わりました。 2026-09-30 13:43:50 +09:00
bb5df7baad 1段階目終了しました 2026-09-30 11:26:04 +09:00
16 changed files with 153 additions and 40 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>

2
.gitignore vendored
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@@ -1 +1 @@
/.metadata/ /bin/

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@@ -5,7 +5,19 @@
<projects> <projects>
</projects> </projects>
<buildSpec> <buildSpec>
<buildCommand>
<name>org.eclipse.wst.validation.validationbuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec> </buildSpec>
<natures> <natures>
<nature>org.eclipse.jdt.core.javanature</nature>
<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
</natures> </natures>
</projectDescription> </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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@@ -1,6 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
<classpathentry kind="src" path=""/>
<classpathentry kind="output" path=""/>
</classpath>

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@@ -1,17 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>src</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.jdt.core.javabuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
</projectDescription>

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@@ -1 +0,0 @@
/EmployeeDAO.class

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@@ -13,6 +13,7 @@ import java.sql.SQLException;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import com.rhizome.example.dto.EmployeeDTO;
import com.rhizome.example.util.DbUtil; import com.rhizome.example.util.DbUtil;
public class EmployeeDAO { public class EmployeeDAO {
@@ -48,8 +49,8 @@ public class EmployeeDAO {
* @throws SQLException * @throws SQLException
* @throws ClassNotFoundException * @throws ClassNotFoundException
*/ */
public List<String> selectAll() throws SQLException, ClassNotFoundException { public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
List<String> rtnList = new ArrayList<>(); List<EmployeeDTO> rtnList = new ArrayList<>();
StringBuilder sql = new StringBuilder(); StringBuilder sql = new StringBuilder();
sql.append(" SELECT "); sql.append(" SELECT ");
sql.append(" " + "*"); sql.append(" " + "*");
@@ -60,12 +61,47 @@ public class EmployeeDAO {
this.stmt = con.prepareStatement(sql.toString()); this.stmt = con.prepareStatement(sql.toString());
rs = stmt.executeQuery(); rs = stmt.executeQuery();
while (rs.next()) { while (rs.next()) {
rtnList.add(rs.getString(NM_EMPLOYEE)); 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 { } finally {
DbUtil.closeStatement(this.stmt); DbUtil.closestatement(this.stmt);
} }
return rtnList; return rtnList;
} }
public List<EmployeeDTO> selectById(int id_employee) throws SQLException, ClassNotFoundException {
List<EmployeeDTO> rtnList2 = new ArrayList<>();
StringBuilder sql = new StringBuilder();
sql.append(" SELECT ");
sql.append(" " + "*");
sql.append(" FROM ");
sql.append(" " + TBL_NAME);
sql.append(" WHERE " + ID_EMPLOYEE+ "=?");
try {
this.stmt = con.prepareStatement(sql.toString());
rs = stmt.executeQuery();
while (rs.next()) {
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"));
rtnList2.add(dto);
}
} finally {
DbUtil.closestatement(this.stmt);
}
return rtnList2;
}
} }

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@@ -0,0 +1,69 @@
package com.rhizome.example.dto;
public class EmployeeDTO {
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_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 String toString() {
return id_employee + "\t"
+ nm_employee + "\t"
+ kn_employee + "\t"
+ mail_address + "\t"
+ password + "\t"
+ id_department;
}
}

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@@ -1 +0,0 @@
/Main.class

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@@ -7,6 +7,7 @@ import java.util.List;
import java.util.Scanner; import java.util.Scanner;
import com.rhizome.example.dao.EmployeeDAO; import com.rhizome.example.dao.EmployeeDAO;
import com.rhizome.example.dto.EmployeeDTO;
import com.rhizome.example.util.DbUtil; import com.rhizome.example.util.DbUtil;
/** /**
@@ -76,7 +77,7 @@ public class Main {
* @throws SQLException * @throws SQLException
*/ */
public static void empSelect() throws ClassNotFoundException, SQLException { public static void empSelect() throws ClassNotFoundException, SQLException {
List<String> empList = new ArrayList<>(); List<EmployeeDTO> empList = new ArrayList<>();
Connection con = DbUtil.getConnection(); Connection con = DbUtil.getConnection();
EmployeeDAO empDao = new EmployeeDAO(con); EmployeeDAO empDao = new EmployeeDAO(con);
System.out.println("1:全検索 2:条件検索 それ以外:戻る"); System.out.println("1:全検索 2:条件検索 それ以外:戻る");
@@ -86,10 +87,15 @@ public class Main {
case "1": case "1":
empList = empDao.selectAll(); empList = empDao.selectAll();
break; break;
case "2":
System.out.println("IDを入力してください");
empList = empDao.selectById(tblFlg);
break;
default: default:
return; return;
} }
for (String emp : empList) { for (EmployeeDTO emp : empList) {
System.out.println(emp); System.out.println(emp);
} }
} finally { } finally {

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@@ -1 +0,0 @@
/DbUtil.class

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@@ -45,7 +45,7 @@ public class DbUtil {
* ※Connection生成には上記の定数を活用してください * ※Connection生成には上記の定数を活用してください
*/ */
public static Connection getConnection() throws SQLException { public static Connection getConnection() throws SQLException {
//データベースへの接続 //データベースの接続
con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS); con = DriverManager.getConnection(DB_URL, DB_USER, DB_PASS);
return con; return con;
} }
@@ -59,9 +59,10 @@ public class DbUtil {
* 例外 :SQLException * 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 * 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 {
//nullチェック public static void closestatement(PreparedStatement stmt) throws SQLException {
if (stmt != null) { if (!stmt.equals(null)) {
//DBステートメントを閉じる
stmt.close(); stmt.close();
} }
} }
@@ -76,10 +77,8 @@ public class DbUtil {
* 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 * 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 { public static void closeConnection(Connection con) throws SQLException {
//nullチェック if (!con.equals(null)) {
if (con != null) {
con.close(); con.close();
} }
} }
} }