Druid连接池及监控在Spring配置如下：
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<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
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<property name="url" value="${jdbc_url}" />
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<property name="username" value="${jdbc_user}" />
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<property name="password" value="${jdbc_password}" />
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<property name="initialSize" value="1" />
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<property name="minIdle" value="1" />
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<property name="maxActive" value="20" />
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<property name="maxWait" value="60000" />
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<property name="timeBetweenEvictionRunsMillis" value="60000" />
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<property name="minEvictableIdleTimeMillis" value="300000" />
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<property name="validationQuery" value="SELECT ‘x‘" />
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<property name="testWhileIdle" value="true" />
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<property name="testOnBorrow" value="false" />
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<property name="testOnReturn" value="false" />
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<property name="poolPreparedStatements" value="true" />
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<property name="maxPoolPreparedStatementPerConnectionSize" value="20" />
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<property name="filters" value="stat" />
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</bean>
只要配置initialSize，maxActive就可以,目前这样的配置已经能够使用连接池，加入其实配置性能不好,官方文档里也不没加其它属性，连接池jar包免费下载。
然后是监控的配置：
web.xml
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<span style="white-space:pre"> </span><filter>
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<filter-name>DruidWebStatFilter</filter-name>
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<filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class>
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<init-param>
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<param-name>exclusions</param-name>
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<param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value>
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</init-param>
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</filter>
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<filter-mapping>
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<filter-name>DruidWebStatFilter</filter-name>
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<url-pattern>/*</url-pattern>
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</filter-mapping>
filter可以监控webURl 访问
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<span style="white-space:pre"> </span><servlet>
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<servlet-name>DruidStatView</servlet-name>
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<servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class>
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</servlet>
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<servlet-mapping>
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<servlet-name>DruidStatView</servlet-name>
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<url-pattern>/druid/*</url-pattern>
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</servlet-mapping>
该配置可以访问监控界面，配置好后，访问http://ip地址:端口号/项目名/druid/index.html即可监控数据库访问性能。
Druid连接池-阿里巴巴开源JDBC组件
Druid连接池及监控在spring中的配置
原文：http://blog.csdn.net/chenleixing/article/details/45165753
