被阿里、腾讯、华为追捧为最牛逼的 Java 框架你知道是什么吗?

Mr.Z 2020-12-22 15:20:24
华为 腾讯 阿里 追捧 捧为


做Java的都知道,Spring是现在最牛逼的 Java 框架,没有之一!在实际研发中,Spring是我们经常会使用的框架,毕竟它们太火了,Spring相关的知识点也是面试必问点。

有次被问到Spring IOC的时候,就顺带打了个比方,IOC类似于一个菜筐,以前需要自己去菜市场买菜,现在只要在家门口放一个菜框applicationcontext.xml,就会有人来给你配菜。

除了IOC之外,AOP也是Spring整个系列的核心的概念。简而言之,将对象创建过程的职责赋予容器,通过容器管理对象的生老病死。IOC是factory加上依赖管理,通过IOC, AOP事实上形成了系统的整合。

简言之,Spring 早已成为 Java 后端开发的行业标准,大量公司选择 Spring 作为基础的开发框架, Java 后端程序员在日常工作中也会经常接触到。因此,如何用好 Spring ,也就成为了Java程序员的必修课之一。

但是在实际学习和使用的过程中,总是会免不了遇到这样一些问题:

  • 在代码之外,看着一堆依赖和配置,总是有些摸不清方向;
  • 看着这么多组件,总是不知道该从何入手;
  • 网上找了一些教程,觉得写得很不错,但只是介绍了某一个框架,那在面对一打框架的时候,该怎么把它们结合到一起

所以,不仅要会用Spring框架,最重要的还是要解决平常在工作中的“怎么办”的问题?

比如说:

1、Spring为什么要用“三级缓存”去解决循环依赖呢?每级缓存的作用是什么?如果去掉其中某一级缓存会出现什么问题?如果一个单例bean和原型bean相互依赖会有问题吗......

2、Mybatis和Spring进行整合时用到了哪些扩展点?如何利用的?为什么Mybatis和Spring整合后Mybatis的一级缓存会失效?

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https://segmentfault.com/a/1190000038584900

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