spring2.5升级至spring4.1.6

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1. <!-- 配置c3p0数据源 -->  
2.     <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">  
3.         <property name="user" value="${user}"></property>  
4.         <property name="password" value="${password}"></property>   
5.         <property name="jdbcUrl" value="${JdbcUrl}"></property>  
6.         <property name="driverClass" value="${driverClass}"></property>  
7.         <property name="numHelperThreads" value="10"></property>  
8.             <property name="initialPoolSize" value="${initPoolSize}"></property>  
9.         <property name="maxPoolSize" value="${maxPoolSize}"></property>  
10.     </bean>  

致命错误在于

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1. <property name="user" value="${user}"></property>  

value="${user}"，注意！！！这里不能用user!!!改成

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1. <property name="user" value="${username}"></property>