IO

大多数应用程序在某些时候都需要处理输入和输出问题。Spring Boot 提供了实用程序和与多种技术的集成，以帮助您在需要 IO 功能时。本节涵盖了标准 IO 功能，例如缓存和验证，以及调度和分布式事务等更高级主题。我们还将涵盖调用远程 REST 或 SOAP 服务和发送电子邮件。

Most applications will need to deal with input and output concerns at some point. Spring Boot provides utilities and integrations with a range of technologies to help when you need IO capabilities. This section covers standard IO features such as caching and validation as well as more advanced topics such as scheduling and distributed transactions. We will also cover calling remote REST or SOAP services and sending email.