Jdbc，DBUtils

public class JdbcUtils {
	//定义Properties类
	public static Properties prop = new Properties();
	static{
		try {
			//获取配置文件
			InputStream in = Thread.currentThread().getContextClassLoader().
					getResourceAsStream("dbconfig.properties");		
			//加载配置文件
			prop.load(in);
			//加载数据库驱动
			Class.forName(prop.getProperty("driverClassName"));
		} catch (IOException | ClassNotFoundException e) {
			e.printStackTrace();
	    }
	}
	/*
	 * 获取数据库连接的方法
	 */
	public static Connection getConnection(){
		try {
			//获取数据库连接
			return DriverManager.getConnection(prop.getProperty("url"),
					prop.getProperty("username"),prop.getProperty("password"));
		} catch (SQLException e) {
			throw new RuntimeException(e);
		}	
	}
	
}

配置文件：

dbconfig.properties

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mydb1?useUnicode=true&characterEncoding=UTF8
username=root
password=649940992