将数据库连接作为对象存储在一个Vector对象中，一旦数据库连接建立后，不同的数据库访问请求就可以共享这些连接，这样，通过复用这些已经建立的数据库连接，可以克服上述缺点，极大地节省系统资源和时间。-The database connection as an object stored in a Vector object, once the database connection is established, different database access requests can share these connections, so that by reusing the already established database connection, you can overcome these shortcomings, significant savings in system resources and time.