需要在配置文件里加上下面就ok了

<property name=”minEvictableIdleTimeMillis” value=”1800000″ />
<property name=”numTestsPerEvictionRun” value=”3″ />
<property name=”testOnBorrow” value=”true” />
<property name=”testWhileIdle” value=”true” />
<property name=”testOnReturn” value=”true” />
<property name=”validationQuery” value=”SELECT 1″ />

http://blog.csdn.net/zhq426/article/details/9787071/

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