database.java~13~

基于b/s的网上书店

package bookshop.util;

/**
 * <p>数据专用包 </p>
 * <p>负责数据库的连接，数据的插入更新和删除 </p>
 * <p>Copyright: wxy Copyright (c) 2004</p>
 * <p>Company:juanjuan book shop online </p>
 * @by :wxy
 * @version 1.0
 */
import java.sql.*;

public class DataBase {
  public Connection conn;
  public Statement stmt;
  public ResultSet rs=null;
  public String sqlStr="";

  public DataBase() {
    this.connect();
  }
 public boolean connect(){
      try{
        Class.forName("org.gjt.mm.mysql.Driver").newInstance();
        String url ="jdbc:mysql://localhost/BookStore?user=wxy&useUnicode=true&characterEncoding=8859_1";
        conn=DriverManager.getConnection(url);
         System.out.print("7777777777");
        stmt = conn.createStatement ();
         /*System.out.print("44444422222");
          rs=stmt.executeQuery("select * from BookAdmin");
          while(rs.next()){
         System.out.print("名称: "+rs.getString(1));
         System.out.println();*/
                   //  }

      }catch(Exception ee){
        System.out.println("connect db error:"+ee.getMessage());
        return false;
      }
      return true;
    }
 public static void main(String[] args) {
     try{
            DataBase db = new DataBase();
            db.connect();
              }catch(Exception e){
                e.printStackTrace();
                }
              }
}