Java连接H2数据库

一、Maven依赖

    <!--h2database-->
    <dependency>
      <groupId>com.h2database</groupId>
      <artifactId>h2</artifactId>
      <version>1.4.200</version>
      <scope>runtime</scope>
    </dependency>

二、实现代码

h2数据库的连接和MySQL连接一样，都可以用jdbc去获取，只需要修改驱动类、URL和用户名密码

H2通常用tcp的方式连接，也可以本地连接，URL根据登录界面的URL修改就行了

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class H2Utils {

    // 定义连接常量
    private static final String DRIVER = "org.h2.Driver";
    private static final String URL = "jdbc:h2:tcp://localhost/D:/Program Files (x86)/H2/bin/sea";
    private static final String USER = "sa";
    private static final String PASSWORD = "";

    public static Connection conn = getConnection();

    // 测试
    public static void main(String[] args) throws SQLException {
        System.out.println(conn);
    }

    // jdbc连接H2数据库
    private static Connection getConnection() {
        if (null != conn) return conn;
        try {
            Class.forName(DRIVER);
            conn = DriverManager.getConnection(URL, USER, PASSWORD);
            if (null != conn) System.out.println("H2数据库连接成功！");
        } catch (SQLException | ClassNotFoundException e) {
            e.printStackTrace();
        }
        return conn;

    }
}

三、运行结果