用spring默认的连接池性能效率不高,今天我为大家介绍三种流行的连接池配置:
1.连接池的jar文件通过查找类在网上能够找到。
2.我首先是数据库信息放置在jdbc.propertity文件中用spring加载这样方便
3.如想了解决整个项目请见::http://zz563143188.iteye.com/blog/1825168
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1.jdbc.propertity常用配置字符串
#Oracle?????
#ConUsePool true use connection pool,false not use connection pool
ConUsePool=
true
#DsName datasource name
#DsName=gtcs
#DbType:database type
#DbType=oracle---------------------------------------------------------------
#jdbc.driver=oracle.jdbc.driver.OracleDriver
#jdbc.url=jdbc:oracle:thin:@127.0.0.1:1521:ora9i
#jdbc.username=gtcs
#jdbc.password=11
#SQL Server------------------------------------------------------------------
#jdbc.driver=com.microsoft.jdbc.sqlserver.SQLServerDriver
#jdbc.url=jdbc:microsoft:sqlserver:// localhost:1433;DatabaseName=wpgl
#jdbc.username=sa
#jdbc.password=
#My SQL----------------------------------------------------------------------
#jdbc.driver=com.mysql.jdbc.Driver
#jdbc.url=jdbc:mysql://127.0.0.1/ anydata?useUnicode=true&characterEncoding= utf-8
#jdbc.username=root
#jdbc.password=root
#select to_char(sysdate,'yyyy- mm-dd hh24:mi:ss') from dual
#jdbc.password=
#Aceess----------------------------------------------------------------------
jdbc.driver=
sun.jdbc.odbc.JdbcOdbcDriver
#jdbc.url=jdbc:odbc:anydata
jdbc.url=
jdbc\
:
odbc\:driver\={Microsoft
Access
Driver
(*.mdb)};DBQ\=E\:\\workspace\\anyData003.mdb
jdbc.username=
jdbc.password=
#proxool db
#proxool.driver=oracle.jdbc.driver.OracleDriver
#proxool.url=jdbc:oracle:thin:@192.168.1.16:1521:ETLDBS
#proxool.username=report
#proxool.password=report
#proxool.alias=dbpool
#proxool.prototypeCount=5
#proxool.maximumConnectionCount=100
#proxool.minimumConnectionCount=10
jdbc.initialSize=
1
jdbc.maxActive=
30
jdbc.maxIdle=
2
jdbc.minIdle=
1
jdbc.timeBetweenEvictionRunsMillis=
3600000
jdbc.minEvictableIdleTimeMillis=
3600000
#hibernate的配置信息
hibernate.show_sql=
true
hibernate.dialect=
org.hibernate.dialect.SQLServerDialect
hibernate.hbm2ddl.auto=
update
hibernate.jdbc.fetch_size=
10
hibernate.default_batch_fetch_size=
10
hibernate.connection.pool_size=
1
hibernate.current_session_context_class=
thread
hibernate.format_sql=
true
hibernate.cache.provider_class=
net.sf.ehcache.hibernate.SingletonEhCacheProvider
hibernate.cache.use_second_level_cache=
true
hibernate.cache.use_query_cache=
true
2.以下是spring配置
DBCP,CP30及proxool连接池
<?
xml
version
=
"1.0"
encoding
=
"UTF-8"
?>
<
beans
xmlns
=
"http://www.springframework.org/schema/beans"
xmlns:xsi
=
"http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop
=
"http://www.springframework.org/schema/aop"
xmlns:dwr
=
"http://www.directwebremoting.org/schema/spring-dwr"
xmlns:mvc
=
"http://www.springframework.org/schema/mvc"
xmlns:tx
=
"http://www.springframework.org/schema/tx"
xmlns:context
=
"http://www.springframework.org/schema/context"
xsi:schemaLocation
=
"http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.directwebremoting.org/schema/spring-dwr
http://www.directwebremoting.org/schema/spring-dwr-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"
default-autowire
=
"byName"
>
<!-- Maps '/' requests to the 'home' view -->
<!-- 加载属性文件 01-->
<
bean
id
=
"propertyConfigurer"
class
=
"org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
>
<
property
name
=
"location"
>
<
value
>
classpath:jdbc.properties
</
value
>
</
property
>
</
bean
>
<!-- 加载属性文件 02-->
<!--
context:property- placeholder location="classpath:jdbc.properties" /
-->
<
bean
id
=
"c3p0"
class
=
"com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method
=
"close"
>
<
property
name
=
"driverClass"
value
=
"${jdbc.driver}"
/>
<
property
name
=
"jdbcUrl"
value
=
"${jdbc.url}"
/>
<
property
name
=
"user"
value
=
"${jdbc.username}"
/>
<
property
name
=
"password"
value
=
"${jdbc.password}"
/>
<!-- 当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<
property
name
=
"acquireIncrement"
value
=
"5"
/>
<!-- 定义在从数据库获取新连接失败后重复尝试的次数。Default: 30 -->
<
property
name
=
"acquireRetryAttempts"
value
=
"30"
/>
<!-- 两次连接中间隔时间,单位毫秒。Default: 1000 -->
<
property
name
=
"acquireRetryDelay"
value
=
"1000"
/>
<!-- 连接关闭时默认将所有未提交的操作回滚。Default: false -->
<
property
name
=
"autoCommitOnClose"
value
=
"false"
/>
<!--
当连接池用完时客户端调用getConnection()后等待获取新连接的时间,超时后将抛出
SQLException,如设为0则无限期等待。单位毫秒。Default: 0
-->
<
property
name
=
"checkoutTimeout"
value
=
"10000"
/>
<!-- 每60秒检查所有连接池中的空闲连接。Default: 0 -->
<
property
name
=
"idleConnectionTestPeriod"
value
=
"60"
/>
<!-- 初始化时获取的连接数,取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
<
property
name
=
"initialPoolSize"
value
=
"10"
/>
<!-- 连接池中保留的最小连接数 -->
<
property
name
=
"minPoolSize"
value
=
"5"
/>
<!-- 连接池中保留的最大连接数。Default: 15 -->
<
property
name
=
"maxPoolSize"
value
=
"30"
/>
<!-- 最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<
property
name
=
"maxIdleTime"
value
=
"60"
/>
<!--
c3p0将建一张名为Test的空表,并使用其自带的查询语句进行测试。如果定义了这个参数那么
属性preferredTestQuery将被忽略。你不能在这张Test表上进行任何操作,它将只供c3p0测试 使用。Default:
null
-->
<
property
name
=
"automaticTestTable"
value
=
"c3p0_TestTable"
/>
<!--
获取连接失败将会引起所有等待连接池来获取连接的线程抛出异常。但是数据源仍有效
保留,并在下次调用getConnection()的时候继续尝试获取连接。如果设为true,那么在尝试
获取连接失败后该数据源将申明已断开并永久关闭。Default: false
-->
<
property
name
=
"breakAfterAcquireFailure"
value
=
"false"
/>
</
bean
>
<!-- BoneCP配置 bonecp-0.7.0.jar bonecp-provider-0.7.0.jar bonecp-spring-0.7.0.jar google-collections-1.0.jar slf4j-api-1.6.1.jar slf4j-log4j12-1.6.1.jar http://jolbox.com/index.html?page=http://jolbox.com/download.html-->
<
bean
id
=
"bonecp"
class
=
"com.jolbox.bonecp.BoneCPDataSource"
destroy-method
=
"close"
>
<
property
name
=
"driverClass"
value
=
"${jdbc.driver}"
/>
<
property
name
=
"jdbcUrl"
value
=
"${jdbc.url}"
/>
<
property
name
=
"username"
value
=
"${jdbc.username}"
/>
<
property
name
=
"password"
value
=
"${jdbc.password}"
/>
<!-- 检查数据库连接池中空闲连接的间隔时间,单位是分,默认值:240,如果要取消则设置为0 -->
<
property
name
=
"idleConnectionTestPeriodInMinutes"
value
=
"60"
/>
<!-- 连接池中未使用的链接最大存活时间,单位是分,默认值:60,如果要永远存活设置为0 -->
<
property
name
=
"idleMaxAgeInMinutes"
value
=
"30"
/>
<!-- 每个分区最大的连接数 -->
<
property
name
=
"maxConnectionsPerPartition"
value
=
"30"
/>
<!-- 每个分区最小的连接数 -->
<
property
name
=
"minConnectionsPerPartition"
value
=
"10"
/>
<!-- 分区数 ,默认值2,最小1,推荐3-4,视应用而定 -->
<
property
name
=
"partitionCount"
value
=
"3"
/>
<!-- 每次去拿数据库连接的时候一次性要拿几个,默认值:2 -->
<
property
name
=
"acquireIncrement"
value
=
"5"
/>
<!-- 缓存prepared statements的大小,默认值:0 -->
<
property
name
=
"statementsCacheSize"
value
=
"100"
/>
<!-- 每个分区释放链接助理进程的数量,默认值:3,除非你的一个数据库连接的时间内做了很多工作,不然过多的助理进程会影响你的性能 -->
<
property
name
=
"releaseHelperThreads"
value
=
"3"
/>
</
bean
>
<!-- proxool 配置 proxool.jar
-->
<
bean
id
=
"proxool"
class
=
"org.logicalcobwebs.proxool.ProxoolDataSource"
>
<
property
name
=
"driver"
value
=
"${jdbc.driver}"
/>
<
property
name
=
"driverUrl"
value
=
"${jdbc.url}"
/>
<
property
name
=
"user"
value
=
"${jdbc.username}"
/>
<
property
name
=
"password"
value
=
"${jdbc.password}"
/>
<!--数据源的别名 -->
<
property
name
=
"alias"
value
=
"proxool_alias"
/>
<!-- 空闲连接个数 默认为0 -->
<
property
name
=
"prototypeCount"
value
=
"4"
/>
<!--最小连接数(默认5个) -->
<
property
name
=
"minimumConnectionCount"
value
=
"1"
/>
<!--
最大连接数(默认15个),超过了这个连接数,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
-->
<
property
name
=
"maximumConnectionCount"
value
=
"30"
/>
<!-- 如果侦察线程发现闲置连接,则会使用这个SQL语句来对这些连接进行检查 -->
<
property
name
=
"houseKeepingTestSql"
value
=
"select CURRENT_DATE"
/>
</
bean
>
<
bean
id
=
"dbcp"
class
=
"org.apache.commons.dbcp.BasicDataSource"
destroy-method
=
"close"
>
<
property
name
=
"driverClassName"
value
=
"${jdbc.driver}"
/>
<
property
name
=
"url"
value
=
"${jdbc.url}"
/>
<
property
name
=
"username"
value
=
"${jdbc.username}"
/>
<
property
name
=
"password"
value
=
"${jdbc.password}"
/>
<!--连接池启动时的初始化 -->
<
property
name
=
"initialSize"
value
=
"1"
/>
<!--连接池的最大值 -->
<
property
name
=
"maxActive"
value
=
"30"
/>
<!-- 最大空闲值,当经过一个高峰时间后,连接池可以慢慢将已经用不到的链接慢慢释放一部分,一直减少到 maxle为止 -->
<
property
name
=
"maxIdle"
value
=
"2"
/>
<!-- 最小空闲值,当空闲的连接数少于阀值时,连接池就会预申请去一些链接,以免洪峰来时来不及申请 -->
<
property
name
=
"minIdle"
value
=
"1"
/>
<!-- 运行判断连接超时任务的时间间隔,单位为毫秒,默认为-1,即不执行任务。 -->
<
property
name
=
"timeBetweenEvictionRunsMillis"
value
=
"3600000"
/>
<!-- 连接的超时时间,默认为半小时。 -->
<
property
name
=
"minEvictableIdleTimeMillis"
value
=
"3600000"
/>
</
bean
>
</
beans
>
3.上面就是几中常用的连接池配置,需要下载相应的jar或者了解使用方法。