package?com.zzk;

import?java.sql.*;
import?javax.swing.JOptionPane;

public?class?DAO?{
????private?static?DAO?dao?=?new?DAO（）;?//?聲明DAO類的靜態實例
????
????/**
?????*?構造方法，加載數據庫驅動
?????*/
????public?DAO（）?{
????????try?{
????????????Class.forName（“com.mysql.jdbc.Driver“）;?//?加載數據庫驅動
????????}?catch?（ClassNotFoundException?e）?{
????????????JOptionPane.showMessageDialog（null
????????????????????“數據庫驅動加載失敗，請將MySQL驅動配置到構建路徑中。\n“?+?e.getMessage（））;
????????}
????}
????
????/**
?????*?獲得數據庫連接的方法
?????*?
?????*?@return?Connection
?????*/
????public?static?Connection?getConn（）?{
????????try?{
????????????Connection?conn?=?null;?//?定義數據庫連接
????????????String?url?=?“jdbc:mysql://localhost:3306/db_database?useUnicode=true&characterEncoding=utf-8“;?//?數據庫db_database的URL
????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????378??2010-09-04?09:20??.classpath
?????文件?????????379??2010-12-31?14:15??.project
?????文件?????????124??2011-01-30?10:51??程序使用說明.txt
?????文件?????????629??2010-09-04?09:18??.settings\org.eclipse.jdt.core.prefs
?????文件????????1664??2011-02-14?10:44??bin\com\zzk\DAO.class
?????文件?????????804??2011-02-14?10:44??bin\com\zzk\ReadPictureFromMySQLframe$1.class
?????文件????????2685??2011-02-14?10:44??bin\com\zzk\ReadPictureFromMySQLframe$2.class
?????文件????????2711??2011-02-14?10:44??bin\com\zzk\ReadPictureFromMySQLframe.class
?????文件???????83300??2011-01-04?16:49??database\db_database.sql
?????文件??????802721??2013-11-15?08:43??lib\mysql-connector-java-5.1.20-bin.jar
?????文件????????1265??2010-09-04?09:18??src\com\zzk\DAO.java
?????文件????????4331??2010-10-19?17:51??src\com\zzk\ReadPictureFromMySQLframe.java