[ch01] Separated the routine of getting DB connection into other class.

src/main/java/ch01/springbook/user/dao/SimpleConnectionMaker.java

@@ -0,0 +1,17 @@
+package ch01.springbook.user.dao;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class SimpleConnectionMaker {
+
+	public Connection makeNewConnection() throws ClassNotFoundException, SQLException {
+		Class.forName("com.mysql.jdbc.Driver");
+		Connection c = DriverManager.getConnection(
+			"jdbc:mysql://localhost/tobystudy?useUnicode=true&characterEncoding=UTF-8&useSSL=true&verifyServerCertificate=false",
+			"study",
+			"study");
+		return c;
+	}
+}

src/main/java/ch01/springbook/user/dao/UserDao.java

@@ -6,8 +6,14 @@
 
 public abstract class UserDao {
 
+	private SimpleConnectionMaker simpleConnectionMaker;
+
+	public UserDao() {
+		simpleConnectionMaker = new SimpleConnectionMaker();
+	}
+
 	public void add(User user) throws ClassNotFoundException, SQLException {
-		Connection c = getConnection();
+		Connection c = simpleConnectionMaker.makeNewConnection();
 
 		PreparedStatement ps = c.prepareStatement(
 			"INSERT INTO users(id, name, password) VALUES(?, ?, ?)");
@@ -22,7 +28,7 @@ public void add(User user) throws ClassNotFoundException, SQLException {
 	}
 
 	public User get(String id) throws ClassNotFoundException, SQLException {
-		Connection c = getConnection();
+		Connection c = simpleConnectionMaker.makeNewConnection();
 
 		PreparedStatement ps = c.prepareStatement(
 			"SELECT * FROM users WHERE id = ?");