Hibernate使用Druid連接池

1. 源碼分析
   （1）DruidDataSourceFactory源碼

   public final static String    PROP_PASSWORD   = "password";
   public final static String    PROP_URL        = "url";
   public final static String    PROP_USERNAME   = "username";
   

   從上面的代碼中可以看出Druid獲取數據庫的字段是沒有前綴的
   （2）Hibernate的源碼

   	public static final String URL ="hibernate.connection.url";
   
   	/**
   	 * Names the connection user.  This might mean one of 2 things in out-of-the-box Hibernate
   	 * {@link org.hibernate.service.jdbc.connections.spi.ConnectionProvider}: <ul>
   	 *     <li>The username used to pass along to creating the JDBC connection</li>
   	 *     <li>The username used to obtain a JDBC connection from a data source</li>
   	 * </ul>
   	 */
   	public static final String USER ="hibernate.connection.username";
   
   	/**
   	 * Names the connection password.  See usage discussion on {@link #USER}
   	 */
   	public static final String PASS ="hibernate.connection.password";
   

   Hibernate的數據庫配置信息是有hibernate.connection前綴的，所以當使用Druid是要注意property的轉換

2. 修改Hibernate數據庫配置文件

   <property name="connection.provider_class">posp.tools.DruidConnectionProvider</property>#Druid連接池的Hibernate輔助類
   <property name="url"></property>  
   <property name="username"></property>
   <property name="password"></property>
   

3. 修改Druid輔助類的configure方法

   配置文件
   <property name="connection.provider_class">posp.tools.DruidConnectionProvider</property>#Druid連接池的Hibernate輔助類
   <property name="hibernate.connection.url"></property>  
   <property name="hibernate.connection.username"></property>
   <property name="hibernate.connection.password"></property>
   輔助類
   public void configure(Map props) {
   		String userName = (String) props.get(Environment.USER);
   		String password = (String) props.get(Environment.PASS);
   		String url = (String) props.get(Environment.URL);
   		try {
   		    //在這裏可以對數據庫連接信息解密
   			super.configure(props);
   		} catch (Exception e) {
   			e.printStackTrace();
   		}
   }