package?mysql;

import?java.sql.Connection;
import?java.sql.DriverManager;
import?java.sql.ResultSet;
import?java.sql.ResultSetmetaData;
import?java.sql.SQLException;
import?java.sql.Statement;
import?java.util.ArrayList;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;

public?class?MySql?{
	public?Listject>>?executeQuery（String?sql）?{
		Connection?con?=?null;
		try?{
			Class.forName（“com.mysql.jdbc.Driver“）;
			con?=?DriverManager.getConnection（“jdbc:mysql://localhost:3306/ebook?useUnicode=true&characterEncoding=utf8“
					“root“?“root“）;
			Statement?sta?=?con.createStatement（）;
			ResultSet?rs?=?sta.executeQuery（sql）;
			ResultSetmetaData?rsmd?=?rs.getmetaData（）;
			Listject>>?list?=?new?ArrayList