conserviceimpl.java

学生管理系统

package stu;

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

public class ConServiceImpl implements ConService {
	private Connection con=null;
	private Statement stmt=null;
	
	public ConServiceImpl(){
		try {
			Class.forName("com.mysql.jdbc.Driver");
			con = DriverManager.getConnection("jdbc:mysql://localhost:3306/stu","root","root");
			stmt = con.createStatement();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	

	public ResultSet executeQuery(String sql) throws SQLException{
		ResultSet rs;
			rs = stmt.executeQuery(sql);
		return rs;
	}

	public int executeUpdate(String sql) throws SQLException {
		return stmt.executeUpdate(sql);
	}

}