1.创建如下mysql脚本 drop table if exists book_info; create table if not exists book_info( book_id ) primary key auto_increment, book_name ) not null, book_author ) not null, book_publish ) not null, book_page ) not null, book_price ,) not null, creation_ti…
一.什么是IOC 引用 Spring 官方原文:This chapter covers the Spring Framework implementation of the Inversion of Control (IoC) [1] principle. IoC is also known as dependency injection (DI). It is a process whereby objects define their dependencies, that is, the o…
理解 “ 控制反转(IoC)” 控制反转(IoC):用白话来讲,就是由 Spring 容器控制程序中类与类之间的关系,而非传统实现中,由程序代码直接操控.这也就是所谓 “控制反转” 的概念所在:控制权由应用代码中转到了外部容器,控制权的转移,是所谓反转. 控制反转(Inversion of Control,IoC),也称为依赖注入( Dependency Injection,DI),是面向对象编程中的一种设计理念,用来降低程序代码之间的耦合度. IoC 理解:传统模式中是类和类之间直接调…