Java，SQL数据库连接错误[重复]

Question

我是新手，正在学习让程序连接mysql数据库，但是出现错误。我想知道如何查找 url jdbc: mysql:

public class KoneksiDatabase {
private static Connection koneksi;
public static Connection getKoneksi(){
    if (koneksi == null) {
        try {
            String url = "jdbc:mysql://localhost/universitas";
            String user = "root";
            String pasword = "kendo";

            DriverManager.registerDriver (new com.mysql.jdbc.Driver());
            koneksi = DriverManager.getConnection (url, user, pasword);
        } catch (SQLException t) {
            System.out.println ("Eror Java Database Connection");
        }

    }
    return koneksi;
}

Answer 1

您是否已将 mysql-connector.jar 文件添加到您的库中？它是默认 java 包中未包含的外部资源。