tomcat7_config_datasource

<?xml version="1.0" encoding="UTF-8"?>
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--><!-- The contents of this file will be loaded for each web application --><Context>

    <!-- Default set of monitored resources -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>

    <!-- Uncomment this to disable session persistence across Tomcat restarts -->
    <!--
    <Manager pathname="" />
    -->

    <!-- Uncomment this to enable Comet connection tacking (provides events
         on session expiration as well as webapp lifecycle) -->
    <!--
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
    -->    


    <!-- 
    Data source of MAD database. 
    maxActive: Connection Pool 同時所能建立的連線最大數量。若為負值，則無上限。
    maxIdle: Connection Pool 同時所能允許閒置的連線最大數量。若為負值，則無上限。
    maxWait: 等待可用 Connect 的 ms 數，超過時間就丟出例外。
    removeAbandonedTimeout: 超過閒置秒數的連線會被移除。
    dbcp config: http://commons.apache.org/proper/commons-dbcp/configuration.html
    http://simon-tech.blogspot.tw/2012/02/tomcat-datasource.html
    -->
    <Resource name="jdbc/TestDB"
          auth="Container"
          type="javax.sql.DataSource"
          factory="org.apache.tomcat.jdbc.pool.DataSourceFactory"
          testWhileIdle="true"
          testOnBorrow="true"
          testOnReturn="false"
          validationQuery="SELECT 1"
          validationInterval="30000"
          timeBetweenEvictionRunsMillis="30000"
          maxActive="5"
          maxIDle="4"
          minIDle="4"
          maxWait="10000"
          initialSize="2"
          removeAbandonedTimeout="300"
          removeAbandoned="true"
          logAbandoned="true"
          minEvictableIdleTimeMillis="30000"
          jmxEnabled="true"
          jdbcInterceptors="org.apache.tomcat.jdbc.pool.interceptor.ConnectionState;
            org.apache.tomcat.jdbc.pool.interceptor.StatementFinalizer"
          username="${mysql_user}"
          password="${mysql_password}"
          driverClassName="com.mysql.jdbc.Driver"
          url="jdbc:mysql://${mysql_server_ip}:3306/${database_name}"
          connectionProperties="useUnicode=true;autoReconnect=true;characterEncoding=utf-8;"/>
</Context>