问题描述
什么是的？
更具体地，Java库，让他们的API和/或SPI？
More specifically, for Java libraries, what makes them an API and/or SPI?
推荐答案
- 的API是类/接口/方法/ ...你的通话，并使用的实现目标和 的说明
- 的SPI是类/接口/方法的描述/ ...你的扩展和实现的达到目标
- the API is the description of classes/interfaces/methods/... that you call and use to achieve a goal and
- the SPI is the description of classes/interfaces/methods/... that you extend and implement to achieve a goal
换言之，该API告诉你什么具体的类/方法确实为你和SPI告诉你，你必须做什么符合
Put differently, the API tells you what a specific class/method does for you and the SPI tells you what you must do to conform.
一般的API和SPI是分开的。例如，在JDBC 是SPI的一部分：如果你只是想使用JDBC，你不需要直接使用它，但大家谁实现了一个JDBC驱动程序必须实现该类
Usually API and SPI are separate. For example in JDBC the Driver class is part of the SPI: If you simply want to use JDBC, you don't need to use it directly, but everyone who implements a JDBC driver must implement that class.
有时，他们不过重叠。 的连接接口为两个 SPI和API：当您使用JDBC驱动程序，它需要通过JDBC驱动程序的开发者来实现您可以使用它经常
Sometimes they overlap, however. The Connection interface is both SPI and API: You use it routinely when you use a JDBC driver and it needs to be implemented by the developer of the JDBC driver.
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