重启spring-jdbc、commons-dbcp、tomcat时连接数据库失败

Question

如果在tomcat启动并运行时数据库重新启动，则重新连接失败。如果重新启动tomcat，一切正常。有没有办法在数据库恢复后重新连接？

下面是sn-p的代码：

<bean id="basicDataSource"
        class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close" p:testOnBorrow="true" p:validationQuery="SELECT * from USERS">
        <property name="driverClassName">
            <value>driverClassName</value>
        </property>
        <property name="url">
            <value>url</value>
        </property>
        <property name="username">
            <value>username</value>
        </property> 
        <property name="password">
            <value>password</value>
        </property> 
    </bean>

Answer 1

您需要将testOnReturn 设置为true Configuration 为 DBCP 解释。

来自链接的片段。

    GenericObjectPool.addObjectToPool()
 Only calls validateObject() if 'testOnReturn' has been set. This parameter is
 passed in the pool's constructor. If the (returned) Object fails validation, it is
immediately destroyed.