dataSource: The name of the property, following JavaBean naming conventions.

Suppose you defined TemplateDao Spring bean in this way: <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName"><value>com.mysql.jdbc.Driver</value></property> <property name="url"><value>jdbc:mysql://${mysql.hostname}:${mysql.port}/${mysql.db}</value></property> <property name="username"><value>${mysql.user}</value></property> <property name="password"><value>${mysql.password}</value></property> </bean>   <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">…