打完war包上传到linux下的tomcat链接数据库失败

Question

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" scope="singleton">
        <property name="driverClassName" value="${driver}"/>
        <property name="url" value="${url}"/>
        <property name="username" value="${user}"/>
        <property name="password" value="${password}"/>
    </bean>

database.properties 文件

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/?autoReconnect=true&useUnicode=true&characterEncoding=UTF-8user=wzp
password=root

怎么回事啊?我windows下tomcat好使能正常读取database.properties,放到linux下的环境就不好使了怎么办?