java BasicDatasource 和 PoolingDatasource 的区别
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Difference between BasicDatasource and PoolingDatasource
提问by sam
What is the difference between org.apache.commons.dbcp BasicDatasource and PoolingDataSoure? Do both support pooling of connections? When to use each of them ?
org.apache.commons.dbcp BasicDatasource 和 PoolingDataSoure 有什么区别？两者都支持连接池吗？什么时候使用它们？
回答by helios
BasicDataSourceis, as the javadocsays, a one-stop shopping for basic needs. It has all the necessary. It creates internally a PoolableDataSource and an ObjectPool.
正如javadoc所说，BasicDataSource是满足基本需求的一站式服务。它拥有所有必要的东西。它在内部创建了一个 PoolableDataSource 和一个 ObjectPool。
PoolingDataSourceimplements the DataSource interface using a provided ObjectPool. PoolingDatasource take cares of whatever has to do with connections (casting, checking validity, setting properties, etc) and ObjectPool take cares of holding and counting this whatever-type-it-is object.
PoolingDataSource使用提供的 ObjectPool 实现 DataSource 接口。PoolingDatasource 负责处理与连接有关的任何事情（转换、检查有效性、设置属性等），而 ObjectPool 负责持有和计算这个任何类型的对象。
So I should use BasicDataSource. If you need something special maybe can use PoolingDatasource with another implementation of ObjectPool. But I think it would be a rare case.
所以我应该使用 BasicDataSource。如果您需要一些特殊的东西，可以将 PoolingDatasource 与 ObjectPool 的另一个实现一起使用。但我认为这将是一种罕见的情况。
