java mysql博客模板

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DatabaseConnector {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/blog";
        String user = "root";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            System.out.println("Connected to the database!");
        } catch (SQLException e) {
            System.out.println("Failed to connect to the database: " + e.getMessage());
        }
    }
}

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class UserDAO {
    public void addUser(String username, String password) {
        String sql = "INSERT INTO users (username, password) VALUES (?, ?)";
        try (Connection conn = DatabaseConnector.getConnection();
             PreparedStatement pstmt = conn.prepareStatement(sql)) {
            pstmt.setString(1, username);
            pstmt.setString(2, password);
            pstmt.executeUpdate();
        } catch (SQLException e) {
            System.out.println("Failed to add user: " + e.getMessage());
        }
    }
}