20261028 JavaSQL演習

.classpath

@@ -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>

.gitignore

@@ -0,0 +1 @@
+/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.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.wst.validation.validationbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.wst.jsdt.core.jsNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

.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

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

@@ -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 {
+	public List<EmployeeDTO> selectAll() throws SQLException, ClassNotFoundException {
-		List<String> rtnList = new ArrayList<>();
+		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));
+				EmployeeDTO emp = new EmployeeDTO();
+				emp.setId(rs.getInt("id_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"));
+                
+                rtnList.add(emp);
 			}
 		} finally {
 			DbUtil.closeStatement(this.stmt);
@@ -68,4 +77,34 @@ public class EmployeeDAO {
 		return rtnList;
 	}
 
+	public  List<EmployeeDTO> selectById(int id_employee)throws SQLException, ClassNotFoundException{
+		List<EmployeeDTO> rtnList = new ArrayList<>();
+		StringBuilder sql = new StringBuilder();
+		sql.append(" SELECT ");
+		sql.append("    " + "*");
+		sql.append(" FROM ");
+		sql.append("    " + TBL_NAME);
+		sql.append(" WHERE ");
+		sql.append(" ID_DEPARTMENT = ?");
+		
+		try {
+			this.stmt = con.prepareStatement(sql.toString());
+			this.stmt.setInt(1,id_employee );
+			rs = stmt.executeQuery();
+			while (rs.next()) {
+				EmployeeDTO emp = new EmployeeDTO();
+				emp.setId(rs.getInt("id_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"));
+                
+                rtnList.add(emp);
+			}
+		}finally {
+			DbUtil.closeStatement(this.stmt);
+		}
+		return rtnList;
+	}
 }

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

@@ -0,0 +1,47 @@
+package com.rhizome.example.dto;
+
+public class EmployeeDTO {
+	private Integer id;
+    private String name;
+    private String kana;
+    private String email;
+    private String pass;
+    private Integer idDep;
+    
+	public Integer getId() {
+		return id;
+	}
+	public void setId(Integer id) {
+		this.id = id;
+	}
+	public String getName() {
+		return name;
+	}
+	public void setName(String name) {
+		this.name = name;
+	}
+	public String getKana() {
+		return kana;
+	}
+	public void setKana(String kana) {
+		this.kana = kana;
+	}
+	public String getEmail() {
+		return email;
+	}
+	public void setEmail(String email) {
+		this.email = email;
+	}
+	public String getPass() {
+		return pass;
+	}
+	public void setPass(String pass) {
+		this.pass = pass;
+	}
+	public Integer getIdDep() {
+		return idDep;
+	}
+	public void setIdDep(Integer idDep) {
+		this.idDep = idDep;
+	}
+}

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

@@ -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;
 
 /**
@@ -53,6 +54,7 @@ public class Main {
 			empSelect();
 			break;
 		case "2":
+			inputCheck("id_employee");
 			break;
 		case "3":
 			break;
@@ -76,7 +78,7 @@ 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");
@@ -89,8 +91,9 @@ public class Main {
 			default:
 				return;
 			}
-			for (String emp : empList) {
+			for (EmployeeDTO emp : empList) {
-				System.out.println(emp);
+				System.out.println(emp.getId() + "\t" + emp.getName() + "\t" + 
+					emp.getKana() + "\t" + emp.getEmail() + "\t" + emp.getPass() + "\t" + emp.getIdDep());
 			}
 		} finally {
 			DbUtil.closeConnection(empDao.con);

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

@@ -1,6 +1,9 @@
 package com.rhizome.example.util;
 
 import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.PreparedStatement;
+import java.sql.SQLException;
 
 public class DbUtil {
 	// 定数定義（共通）
@@ -41,7 +44,15 @@ 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{
+			Class.forName("com.mysql.cj.jdbc.Driver");
+			con = DriverManager.getConnection(
+					"jdbc:mysql://127.0.0.1:3306/rezodb",
+					"rezouser",
+					"Rezo_0000"
+					);
+			return con;
+		}
 
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
@@ -52,7 +63,11 @@ 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();
+			}
+		}
 
 	/*
 	 * TODO 以下の仕様でメソッドを作成してください。
@@ -63,6 +78,10 @@ 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) throws SQLException{
+			if(con != null) {
+				con.close();
+			}
+		}
 
 }