DruidDataSource动态配置

属性	说明
druid.mysql.usePingMethod	配置MySqlValidConnectionChecker是否用com.mysql.jdbc.Connection.ping()方法检测连接是否有效
druid.oracle.fatalErrorCodes
druid.oracle.pingTimeout
druid.testWhileIdle
druid.testOnBorrow
druid.validationQuery
druid.filters
druid.timeBetweenLogStatsMillis
druid.stat.sql.MaxSize
druid.useGloalDataSourceStat