sqlbean.java

JSP+SQL 图书馆管理系统

package beans;
import java.sql.*;
public class SQLBean {
	private Connection con=null;
	public SQLBean(){
		con = DBConnection.getConnection();
	}
	public ResultSet query(String sql){
		ResultSet rs=null;
		try{
		Statement st = con.createStatement();
		rs = st.executeQuery(sql);
		System.out.println("查询成功");
		}catch(Exception e){
			e.printStackTrace();
		}
		return rs;
	}
}