連線資料庫-mysql

連線前的三個條件：下載好JDK環境、Mysql、資料庫驅動jar包
jar包也去MySQL官網上下就可以
然後建立資料庫，我是在Navicat上建的資料庫然後建立的表。也嘗試在小黑框那建立了但總出錯。跟著up主改配置改了一通up主是成果了，我也沒成功。。。、
然後在eclipse上新建專案，連上之前下載好的jar包，打上程式碼，連線

package connect;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class ConnectTest {
	private final static String url = "jdbc:mysql://localhost:3306/demo?serverTimezone=GMT";
	private final static String username = "root";
	private final static String password = "123456";

	public static void main(String args[]) {
		try {
			Class.forName("com.mysql.jdbc.Driver");
		} catch (Exception e) {
			e.printStackTrace();
		}
		try {
			Connection connect = DriverManager.getConnection(url, username, password);
			Statement stmt = connect.createStatement();
			ResultSet rs = stmt.executeQuery("select * from student");
			while (rs.next()) {
				System.out.print("id:" + rs.getInt("id")+"\n");
				System.out.print("name:" + rs.getString("name")+"\n");
				System.out.println("gender:" + rs.getString("gender")+"\n");
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

建立的表

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