本文主要是介绍用DBUtil封装jdbc，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
db.properties放在src目录下
public class DBUtil {private static Properties prop = new Properties();static {try {prop.load(DBUtil.class.getClassLoader().getResourceAsStream("db.properties"));//加载数据库驱动(可以省略)Class.forName(prop.getProperty("driverClassName"));} catch (Exception e) {System.out.println("加载db.properties配置文件信息异常....");e.printStackTrace();}}public static Connection getConnection() {Connection conn = null;try {String url = prop.getProperty("url");String username = prop.getProperty("username");String password = prop.getProperty("password");conn = DriverManager.getConnection(url, username, password);} catch (Exception e) {System.out.println("获取数据库连接异常...");e.printStackTrace();}return conn;}public static void close(Connection conn, Statement st,ResultSet rs) {if (st != null) {try {st.close();} catch (Exception e) {e.printStackTrace();}}if (conn != null) {try {conn.close();} catch (Exception e) {e.printStackTrace();}}if (rs != null) {try {rs.close();} catch (Exception e) {e.printStackTrace();}}}}这篇关于用DBUtil封装jdbc的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！
