java mysql分页工具类

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

public class PaginationUtil {

    private static final String DB_URL = "jdbc:mysql://localhost:3306/mydatabase";
    private static final String DB_USER = "username";
    private static final String DB_PASSWORD = "password";

    public static void main(String[] args) {
        int pageNumber = 1;
        int pageSize = 10;
        try {
            String sql = "SELECT * FROM mytable LIMIT ? OFFSET ?";
            try (Connection conn = DriverManager.getConnection(DB_URL, DB_USER, DB_PASSWORD);
                 PreparedStatement pstmt = conn.prepareStatement(sql)) {
                pstmt.setInt(1, pageSize);
                pstmt.setInt(2, (pageNumber - 1) * pageSize);
                try (ResultSet rs = pstmt.executeQuery()) {
                    while (rs.next()) {
                        // 处理每一行数据
                        System.out.println(rs.getString("columnName"));
                    }
                }
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}