项目的META-INF/context.xml数据源配置

悬赏园豆：50 [待解决问题]

context.xml里面的 ${database.user} 在哪个配置文件配置？context.xml的代码就是

<?xml version="1.0" encoding="UTF-8"?>
<Context>
    <Resource name="jdbc/web"
              auth="Container"
              type="javax.sql.DataSource"
              factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
              testWhileIdle="true"
              testOnBorrow="true"
              testOnReturn="false"
              validationQuery="SELECT 1"
              timeBetweenEvictionRunsMillis="30000"
              maxActive="15"
              maxIdle="10"
              minIdle="5"
              removeAbandonedTimeout="60"
              removeAbandoned="false"
              logAbandoned="true"
              minEvictableIdleTimeMillis="30000"
              jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
              username="${database.user}"
              password="${database.password}"
              driverClassName="${database.driver}"
              url="${database.url}"/>