mysql的jdbc�q�接代码

zhuyongjp — Wed, 08 Jul 2009 01:41:00 GMT

public class DBHelper {
     public static Connection getConnection() {
        Connection conn = null ;
         try {
            Class.forName( " com.mysql.jdbc.Driver " );
            conn = DriverManager.getConnection( " jdbc:mysql://localhost/ad?useUnicode=true&characterEncoding=GBK&jdbcCompliantTruncation=false " ,
                     " root " , " root " );
        } catch (Exception e) {
            e.printStackTrace();
        }
         return conn;
    }
}

         /* dao中的�Ҏ�� */
     public List < Adv > getAllAdvs() {

        Connection conn = null ;
        ResultSet rs = null ;
        PreparedStatement stmt = null ;
        String sql = " select * from adv where id = ? " ;
        List < Adv > advs = new ArrayList < Adv > ();

        conn = DBHelper.getConnection();
         if (conn != null ) {
             try {
                stmt = conn.prepareStatement(sql);
                                stmt.setInt( 1 , new Integer( 1 ));
                rs = stmt.executeQuery();

                 if (rs != null ) {
                     while (rs.next()) {
                        Adv adv = new Adv();
                        adv.setId(rs.getLong( 1 ));
                        adv.setName(rs.getString( 2 ));
                        adv.setDesc(rs.getString( 3 ));
                        adv.setPicUrl(rs.getString( 4 ));

                        advs.add(adv);
                    }
                }
            } catch (SQLException e) {
                e.printStackTrace();
            } finally {
                 try {
                    stmt.close();
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
         return advs;
    }

zhuyongjp 2009-07-08 09:41 发表评论

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mysql的jdbc�q�接代码