关于配置spring中dbcp2时错误java.lang.AbstractMethodError: com.mysql.jdbc.Connection.isValid(I)Z的解决

  最近使用dbcp2时发现错误：java.lang.AbstractMethodError: com.mysql.jdbc.Connection.isValid(I)Z

网上说要更新mysql-connector.jar可是在我更新之后问题还是没有解决，后来浏览国外的网站发现解决方法了

就是在spring的beans.xml中添加<property name="validationQuery" value="${db.validationQuery}" />配置即可解决问题。

具体配置如下：

beans.xml

<?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:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beansacd8 http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${db.driverClassName}" />
<property name="url" value="${db.url}" />
<property name="username" value="${db.username}" />
<property name="password" value="${db.password}" />
<property name="validationQuery" value="${db.validationQuery}" />
</bean><bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:jdbc.properties" />
</bean><bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean><bean id="studentDao" class="cn.edu.whpu.dao.impl.StudentDaoImpl">
<property name="jdbcTemplate" ref="jdbcTemplate"></property>
</bean><bean id="studentService" class="cn.edu.whpu.service.impl.StudentServiceImpl">
<property name="studentDao" ref="studentDao"></property>
</bean></beans>

jdbc.properties

db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/db_spring
db.username=root
db.password=123456
db.validationQuery=select 1