jdbc : connection

jdbc/src/main/java/com/example/jdbc/connection/ConnectionConst.java

@@ -0,0 +1,7 @@
+package com.example.jdbc.connection;
+
+public abstract class ConnectionConst {
+    public static final String URL = "jdbc:h2:tcp://localhost/~/test";
+    public static final String USERNAME = "sa";
+    public static final String PASSWORD = "";
+}

jdbc/src/main/java/com/example/jdbc/connection/DBConnectionUtil.java

@@ -0,0 +1,23 @@
+package com.example.jdbc.connection;
+
+import lombok.extern.slf4j.Slf4j;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+import static com.example.jdbc.connection.ConnectionConst.*;
+
+@Slf4j
+public class DBConnectionUtil {
+
+    public static Connection getConnection() {
+        try {
+            Connection connection = DriverManager.getConnection(URL, USERNAME, PASSWORD);
+            log.info("get connection={}, class={}", connection, connection.getClass());
+            return connection;
+        } catch (SQLException e) {
+            throw new IllegalStateException(e);
+        }
+    }
+}

jdbc/src/test/java/com/example/jdbc/connection/DBConnectionUtilTest.java

@@ -0,0 +1,18 @@
+package com.example.jdbc.connection;
+
+import lombok.extern.slf4j.Slf4j;
+import org.junit.jupiter.api.Test;
+
+import java.sql.Connection;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@Slf4j
+class DBConnectionUtilTest {
+
+    @Test
+    void connection() {
+        Connection connection = DBConnectionUtil.getConnection();
+        assertThat(connection).isNotNull();
+    }
+}