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J2SE上的数据源和DriverManager

[英]DataSource and DriverManager on J2SE

原文 2012-06-03 07:58:23 9 2 java/ mysql/ java-ee/ connection/ datasource

I'm interested in developing a desktop application that connects to a MySQL DB. 我对开发连接到MySQL数据库的桌面应用程序感兴趣。 After reading this java tutorial on DB connection (and several others) I have a question. 看完这对数据库连接（和其他几个人）Java教程我有一个问题。 Using DataSource seems popular on J2EE while DriverManager is a common choise for desktop applications. 在J2EE上，使用DataSource似乎很流行，而DriverManager是桌面应用程序的常见选择。 Is it still possible to use DataSource on a desktop application? 仍然可以在桌面应用程序上使用DataSource吗？ If yes, is it a better choice over DriverManager? 如果是，那是不是优于DriverManager的更好选择？

2 个解决方案

It's perfectly possible to use a DataSource on a desktop application. 完全有可能在桌面应用程序上使用数据源。

Server apps are usually multi-thread, multi-user applications, where several connections to the database are open in parallel. 服务器应用程序通常是多线程，多用户应用程序，其中与数据库的多个连接并行打开。 A pooled DataSource is critical here. 池化数据源在这里至关重要。

Desktop apps are usually single-user applications, where you just need one connection to the database. 桌面应用程序通常是单用户应用程序，您只需要一个数据库连接即可。 So a pooled datasource isn't necessary in this case. 因此，在这种情况下，不需要合并数据源。

I'll quote the javadoc: 我将引用javadoc：

An alternative to the DriverManager facility, a DataSource object is the preferred means of getting a connection. 作为DriverManager工具的替代方法，DataSource对象是获得连接的首选方法。

Normally you use DriverManager when you just want a connection for one time while with DataSource you get other features such as connection pooling and distributed transactions. 通常，当您只想连接一次时使用DriverManager ，而使用DataSource可以获得其他功能，例如连接池和分布式事务。

Hope this helps. 希望这可以帮助。