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事务四个基本特征或 ACID 特性。 ......................................................................................... 940
Spring 的事务传播特性(属性) ............................................................................................... 941
数据库事务并发 Concurrent 问题 ...............................................................................................941
1、 脏读(当前事物读到了其他事物更新但是还没有提交的值就是脏读) .......................941
2、不可重复读 .............................................................................................................................942
3、幻读 .........................................................................................................................................942
事物隔离级别 ...............................................................................................................................942
1、读未提交:READ UNCOMMITTED ................................................................................942
2、读已提交:READ COMMITTED ......................................................................................942
3、可重复读:REPEATABLE READ .................................................................................... 942
4、串行化:SERIALIZABLE .....................................................................................................942
在项目中一般用读已提交(Read Commited)这个隔离级别 .............................................................. 942
框架 ....................................................................................................................................................... 943
什么是框架? ................................................................................................................................. 943
2)框架天生就是为扩展而设计的; ................................................................................................. 943
MVC 模式 .....................................................................................................................................943
简单讲一下 SpringMVC 的执行流程? ..................................................................................... 944
8、把 View 返回给请求者(浏览器) .................................................................................... 945
过滤器 Filter 和拦截器 Interceptor 的区别 .................................................................................945
1、 实现原理不同 .......................................................................................................................945
2、 使用范围不同 .......................................................................................................................945
3、 触发时机不同 .......................................................................................................................945
说一下 Spring 中的两大核心?.................................................................................................. 945
IOC、AOP 在下面有详细介绍 .......................................................................................... 945
什么是 IOC 和 DI .........................................................................................................................946
依赖注入方式 ...............................................................................................................................946
@Resource 和@Autowired 有什么区别 ..................................................................................... 947
AOP 是什么?如何使用?项目中具体的体现? ......................................................................947
什么是 ORM? ...............................................................................................................................950
MyBatis 中#和$区别 .................................................................................................................... 950
5、使用 ${} 时,要注意何时加或不加单引号,即 ${} 和 '${}' ........................................950
MyBatis 底层使用什么实现的 .................................................................................................... 950
接口 Mapper 内的方法能重载(overLoad)吗? ..................................................................... 951
MyBatis 一级缓存、二级缓存 .................................................................................................... 952
一级缓存 .............................................................................................................................. 952
二级缓存 .............................................................................................................................. 952
设计模式(设计模式是对已有问题固定的解决方法的总结。) ................................................... 953
设计模式的 6 大原则: ...............................................................................................................953
6、接口隔离原则 .........................................................................................................................953
单利模式 .......................................................................................................................................953
饿汉式 .................................................................................................................................. 953
从时间空间上看:以空间换时间 ...................................................................................... 953
懒汉式 .................................................................................................................................. 954
简单工厂模式 ...............................................................................................................................956