2013-10-29 21 views

回答

0

使用Hibernate,您不需要編寫連接代碼,但您需要配置Hibernate將使用的連接併爲您生成連接代碼。

任何使用Hibernate作爲ORM工具的實時項目都必須指定連接屬性。另外實時項目不會重新發明輪子,而是使用現成的連接池,如c3po。

下面的配置預訂購幫助您瞭解

<?xml version="1.0" encoding="utf-8"?> 
<!DOCTYPE hibernate-configuration PUBLIC 
"-//Hibernate/Hibernate Configuration DTD 3.0//EN" 
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> 
<hibernate-configuration> 
<session-factory> 
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property> 
<property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:MKYONG</property> 
<property name="hibernate.connection.username">mkyong</property> 
<property name="hibernate.connection.password">password</property> 
<property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property> 
<property name="hibernate.default_schema">MKYONG</property> 
<property name="show_sql">true</property> 

<property name="hibernate.c3p0.min_size">5</property> 
<property name="hibernate.c3p0.max_size">20</property> 
<property name="hibernate.c3p0.timeout">300</property> 
<property name="hibernate.c3p0.max_statements">50</property> 
<property name="hibernate.c3p0.idle_test_period">3000</property> 

<mapping class="com.mkyong.user.DBUser"></mapping> 
</session-factory> 
</hibernate-configuration> 

您可以在此鏈接找到整個例如:http://www.mkyong.com/hibernate/how-to-configure-the-c3p0-connection-pool-in-hibernate/