在Hibernate里配置Proxool连接池
1.?需要jar文件
proxool-cglib.jar
proxool-0.9.1.jar
下载地址：http://proxool.sourceforge.net
proxool-0.9.1 中包含这两个jar文件，其中proxool-0.9.1.jar地址需要放在环境变量classpath中.
2.修改hibernate.cfg.xml文件.
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在文件中增加下面内容：
<property name="hibernate.proxool.pool_alias">pool1</property>?
<property name="hibernate.proxool.xml">ProxoolConf.xml</property>?
<property name="hibernate.connection.provider_class">org.hibernate.connection.ProxoolConnectionProvider</property>
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依次是连接池别名，对应xml文件及驱动，整个文件如下：
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<?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">
<!-- Generated by MyEclipse Hibernate Tools.?????????????????? -->
<hibernate-configuration>
?<session-factory>
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??<property name="dialect">org.hibernate.dialect.Oracle9Dialect</property>
??<property name="myeclipse.connection.profile">OracleServer</property>????
??
??<property name="show_sql">true</property><!--显示sql语句-->
??<property name="format_sql">true</property><!--使显示的sql语句格式化-->
??<!-- 解决"ClassNotFoundException: org.hibernate.hql.ast.HqlToken"异常 -->
??<property name="hibernate.query.factory_class">
???org.hibernate.hql.classic.ClassicQueryTranslatorFactory
??</property>
??<!-- 解决"java.sql.SQLException: 不允许的操作: streams type cannot be used in batching" -->
??<property name="hibernate.jdbc.batch_size">0</property>
??<property name="hibernate.proxool.pool_alias">pool1</property>
??<property name="hibernate.proxool.xml">ProxoolConf.xml</property>
??<property name="hibernate.connection.provider_class">org.hibernate.connection.ProxoolConnectionProvider</property>
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??<mapping
???resource="com/netinfo/struts/domain/domain00/T0000powerinfo.hbm.xml" />
?</session-factory>
</hibernate-configuration>
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3.增加ProxoolConf.xml文件,放在hibernate.cfg.xml文件同级目录下.
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<?xml version="1.0" encoding="utf-8"?>
<!-- the proxool configuration can be embedded within your own application's.
Anything outside the "proxool" tag is ignored. -->
<something-else-entirely>
??? <proxool>
??????? <alias>pool1</alias>
<!--proxool只能管理由自己产生的连接-->
??????? <driver-url>jdbc:mysql://localhost:3306/struts?useUnicode=true&characterEncoding=GBK</driver-url>
??????? <driver-class>org.gjt.mm.mysql.Driver</driver-class>
??????? <driver-properties>
??????????? <property name="user" value="root"/>
??????????? <property name="password" value="8888"/>
??????? </driver-properties>
<!-- proxool自动侦察各个连接状态的时间间隔(毫秒),侦察到空闲的连接就马上回收,超时的销毁-->
??????? <house-keeping-sleep-time>90000</house-keeping-sleep-time>
<!-- 指因未有空闲连接可以分配而在队列中等候的最大请求数,超过这个请求数的用户连接就不会被接受-->
??????? <maximum-new-connections>20</maximum-new-connections>
<!-- 最少保持的空闲连接数-->
??????? <prototype-count>5</prototype-count>
<!-- 允许最大连接数,超过了这个连接，再有请求时，就排在队列中等候，最大的等待请求数由maximum-new-connections决定-->
??????? <maximum-connection-count>100</maximum-connection-count>
<!-- 最小连接数-->
??????? <minimum-connection-count>10</minimum-connection-count>
??? </proxool>
</something-else-entirely>
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常见错误：
1、org.hibernate.HibernateException: Proxool Provider unable to load JAXP configurator file: proxool.xml
org.logicalcobwebs.proxool.ProxoolException: Parsing failed.
将proxoolconf.xml里面的中文删除即可。
2、proxool-0.8.3.jar中包含了proxool-0.9.1.jar和proxool-cglib.jar 使用proxool-0.9.1.jar记得加上proxool-cglib.jar
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