j2ee数据库连接池配置大全

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/config/applicationContext.xml</param-value>
</context-param>

<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:/config/dispatcherServlet.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>

<context:component-scan base-package="com.smart" annotation-config="true">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

<context:component-scan base-package="com.smart" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>

<bean id="c3p0" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="${mysql.jdbc.driverClassName}" />
<property name="jdbcUrl" value="${mysql.jdbc.url}" />
<property name="user" value="${mysql.jdbc.username}" />
<property name="password" value="${mysql.jdbc.password}" />

<property name="acquireIncrement" value="5" />

<property name="acquireRetryAttempts" value="30" />

<property name="acquireRetryDelay" value="1000" />

<property name="autoCommitOnClose" value="false" />

<property name="checkoutTimeout" value="10000" />

<property name="idleConnectionTestPeriod" value="60" />

<property name="initialPoolSize" value="10" />

<property name="minPoolSize" value="5" />

<property name="maxPoolSize" value="30" />

<property name="maxIdleTime" value="60" />

<property name="automaticTestTable" value="c3p0_TestTable" />

<property name="breakAfterAcquireFailure" value="false" />
</bean>

<!--
<bean id="bonecp" class="com.jolbox.bonecp.BoneCPDataSource" destroy-method="close">
<property name="driverClass" value="${mysql.jdbc.driverClassName}" />
<property name="jdbcUrl" value="${mysql.jdbc.url}" />
<property name="username" value="${mysql.jdbc.username}" />
<property name="password" value="${mysql.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>

-->
<!--<bean id="proxool" class="org.logicalcobwebs.proxool.ProxoolDataSource" >
<property name="driver" value="${mysql.jdbc.driverClassName}" />
<property name="driverUrl" value="${mysql.jdbc.url}" />
<property name="user" value="${mysql.jdbc.username}" />
<property name="password" value="${mysql.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="${mysql.jdbc.driverClassName}" />
<property name="url" value="${mysql.jdbc.url}" />
<property name="username" value="${mysql.jdbc.username}" />
<property name="password" value="${mysql.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>

<mongo:mongo id="mongo" replica-set="${mongo.hostport}">

<mongo:options
connections-per-host="${mongo.connectionsPerHost}"
threads-allowed-to-block-for-connection-multiplier="${mongo.threadsAllowedToBlockForConnectionMultiplier}"
connect-timeout="${mongo.connectTimeout}"
max-wait-time="${mongo.maxWaitTime}"
auto-connect-retry="${mongo.autoConnectRetry}"
socket-keep-alive="${mongo.socketKeepAlive}"
socket-timeout="${mongo.socketTimeout}"
slave-ok="${mongo.slaveOk}"
write-number="1"
write-timeout="0"
write-fsync="true"/>
</mongo:mongo>

<mongo:db-factory dbname="database" mongo-ref="mongo" />

<bean id="mongoTemplate" class="org.springframework.data.mongodb.core.MongoTemplate">
<constructor-arg name="mongo" ref="mongo" />
<constructor-arg name="databaseName" value="${mongo.databaseName}" />
<constructor-arg name="username" value="${mongo.username}"/>
<constructor-arg name="password" value="${mongo.password}"/>
</bean>