【5分钟背八股】01：说说你对spring的理解？
官网地址：https://spring.io/projects/spring-framework#overview
压缩包下载地址：https://repo.spring.io/release/org/springframework/spring/
源码地址：https://github.com/spring-projects/spring-framework
Spring makes it easy to create Java enterprise applications. It provides everything you need to embrace the Java language in an enterprise environment, with support for Groovy and Kotlin as alternative languages on the JVM, and with the flexibility to create many kinds of architectures depending on an application’s needs. As of Spring Framework 5.1, Spring requires JDK 8+ (Java SE 8+) and provides out-of-the-box support for JDK 11 LTS. Java SE 8 update 60 is suggested as the minimum patch release for Java 8, but it is generally recommended to use a recent patch release.
Spring supports a wide range of application scenarios. In a large enterprise, applications often exist for a long time and have to run on a JDK and application server whose upgrade cycle is beyond developer control. Others may run as a single jar with the server embedded, possibly in a cloud environment. Yet others may be standalone applications (such as batch or integration workloads) that do not need a server.
Spring is open source. It has a large and active community that provides continuous feedback based on a diverse range of real-world use cases. This has helped Spring to successfully evolve over a very long time.
Spring 使创建 Java 企业应用程序变得更加容易。它提供了在企业环境中接受 Java 语言所需的一切,，并支持 Groovy 和 Kotlin 作为 JVM 上的替代语言，并可根据应用程序的需要灵活地创建多种体系结构。 从 Spring Framework 5.0 开始，Spring 需要 JDK 8(Java SE 8+)，并且已经为 JDK 9 提供了现成的支持。
Spring支持各种应用场景， 在大型企业中, 应用程序通常需要运行很长时间，而且必须运行在 jdk 和应用服务器上，这种场景开发人员无法控制其升级周期。 其他可能作为一个单独的jar嵌入到服务器去运行，也有可能在云环境中。还有一些可能是不需要服务器的独立应用程序(如批处理或集成的工作任务)。
Spring 是开源的。它拥有一个庞大而且活跃的社区，提供不同范围的，真实用户的持续反馈。这也帮助Spring不断地改进,不断发展
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