一个hibernate的连接配置，供以后使用

Hibernate.cfg.xml

<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>
	<session-factory>
		<!-- Database connection settings -->
		<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
		<property name="connection.url">jdbc:mysql://localhost:3306/hibernate</property>
		<property name="connection.username">root</property>
		<property name="connection.password">root</property>

		<!-- JDBC connection pool (use the built-in) 
		不使用内建连接词，hibernate参考手册的一段
		Hibernate 自带的连接池算法相当不成熟。它只是为了让你快些上手，并不适合用于产品系统或性能测试中。 
		出于最佳性能和稳定性考虑你应该使用第三方的连接池。只需要用特定连接池的设置替换 hibernate.connection.pool_size 即可。
		
		<property name="connection.pool_size">5</property>
		-->
		<!-- 自建c3p0连接池，要加入c3p0-0.9.1.jar-->
		
		<property name="hibernate.c3p0.min_size">5</property>
		<property name="hibernate.c3p0.max_size">20</property>
		<property name="hibernate.c3p0.timeout">1800</property>
		<!-- 最大的PreparedStatement的数量 -->
		<property name="hibernate.c3p0.max_statements">100</property> 
                <!--配置默认schema
<property name="hibernate.default_schema" value="myschema"/>
-->
		<!-- SQL dialect -->
		<property name="dialect">org.hibernate.dialect.MySQL5Dialect</property>

		<!-- Enable Hibernate's automatic session context management -->
		<property name="current_session_context_class">thread</property>

		<!-- Disable the second-level cache  -->
		<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>

		<!-- Echo all executed SQL to stdout -->
		<property name="show_sql">true</property>
		
		<!-- Drop and re-create the database schema on startup -->
		<property name="hbm2ddl.auto">update</property>
		
		<mapping resource="net/hnspi/entity/Record.hbm.xml" />
		<mapping resource="net/hnspi/entity/Account.hbm.xml" />
		 
	</session-factory>
</hibernate-configuration>