如果您还没完成第3部分，请导入该解决方案，并运行应用程序，以在本文将使用的服务器配置中创建JDBC数据源。

If you did not complete Part 3, import the solution and run the application to automatically create the JDBC data source on the server configuration that we will use in this article.

youdao

在本文的前面，我建议你以类来考虑分类器。

Earlier in this article, I suggested that you think of classifiers simply as classes.

youdao

在本文中，我们以图4显示的集群拓扑为例。

We use cluster topology shown as figure 4 as example in this article.

youdao