org.springframework.beans.factory.BeanCreationException

（1）警告:
Exception encountered during context initialization - cancelling refresh attempt:
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name ‘dataSource’ defined in class path resource [config/applicationContext.xml]:
Error setting property values;
nested exception is org.springframework.beans.
NotWritablePropertyException: Invalid property ‘user’ of bean class [org.apache.commons.dbcp.BasicDataSource]:
Bean property ‘user’ is not writable or has an invalid setter method.
Does the parameter type of the setter match the return type of the getter?
（2）原因：获取数据源时，属性名写的不对
（3）解决：
修改属性名

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">        <property name="**url**" value="jdbc:mysql://localhost:3306/test"/>        <property name="**driverClassName**" value="com.mysql.jdbc.Driver"/>        <property name="**username**" value="root"/>        <property name="password" value="123456"/>        </bean>