JDBC工具类-JdbcUtils

public class JdbcUtils {
	private static final String dbconfig = "dbconfig.properties" ;
	private static Properties prop = new Properties() ;
	static {
		try {
			InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream(dbconfig);
			prop.load(in);
			Class.forName(prop.getProperty("driverClassName"));
		} catch(IOException e) {
			throw new RuntimeException(e);
		}
	} 

	public static Connection getConnection () {
		try {
			return DriverManager.getConnection(prop.getProperty("url"),
					prop.getProperty("username"), prop.getProperty("password"));
		} catch (Exception e) {
			throw new RuntimeException(e);
		}
	}
}

driverClassName=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mydb1
username=root
password=123