2026_0910_AI_5G_Java_MUN/em-jdbc
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2段階目（名前検索から全データ検索に）

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s-sakiyama
2026-09-30 09:25:59 +09:00
parent 468b80bc4a
commit 450270610f
2 changed files with 11 additions and 6 deletions
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10
src/com/rhizome/example/dao/EmployeeDAO.java
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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(" " + "*");
@@ -60,7 +61,10 @@ 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(rs.getInt(ID_EMPLOYEE), rs.getString(NM_EMPLOYEE),
rs.getString(KN_EMPLOYEE), rs.getString(MAIL_ADDRESS), rs.getString(PASSWORD),
rs.getInt(ID_DEPARTMENT));
rtnList.add(dto);
} }
} finally { } finally {
DbUtil.closeStatement(this.stmt); DbUtil.closeStatement(this.stmt);

7
src/com/rhizome/example/main/Main.java
View File

@@ -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");
@@ -89,8 +90,8 @@ public class Main {
default: default:
return; return;
} }
for (String emp : empList) { for (EmployeeDTO emp : empList) {
System.out.println(emp); emp.showInfo();
} }
} finally { } finally {
DbUtil.closeConnection(empDao.con); DbUtil.closeConnection(empDao.con);