数据库编程

开发平台：

Java

DataBase.java~8~：源码内容

							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;
  public String sqlStr="";
  public DataBase() {
  }
 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");
      }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();
            Statement stmt=db.conn.createStatement();
         ResultSet rs=stmt.executeQuery("select * from BookAdmin");
      while(rs.next()){
        System.out.print("名称: "+rs.getString(1));
        System.out.print("tpassword: "+rs.getString(2));
        System.out.println();
                    }
              }catch(Exception e){
                e.printStackTrace();
                                   }
        }
}

						