一般是配置文件引用失敗引起的
正確的配置:
<bean id="propertyConfigurer"
class="com.jcl.common.spring.web.***PropertyPlaceholderConfigurer">
<property name="envPropFiles">
<list>
<value>classpath:/config/properties/#env/application.properties</value>
</list>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${master.jdbc.driver}"/>
<property name="url" value="${master.jdbc.url}"/>
<property name="username" value="${master.jdbc.username}"/>
<property name="password" value="${master.jdbc.password}"/>
</bean>