XX次面试问题汇总

﹏ヽ暗。殇╰゛Y 2022-09-03 12:29 110阅读 0赞

### tag1汇总 ###

0、[框架基础\*70][70]  
1、自我介绍 工作经历 学习经历 优秀项目经验分享。  
2、讲解历史项目中业务场景，数据如何处理，功能如何实现。  
3、讲解历史项目中整体使用的架构。  
4、zk在你历史的项目中主要做什么用的。[分布式协调、分布式锁][Link 1]、配置管理、注册中心、负载均衡  
5、springmvc 三层架构工作原理。  
6、spingboot jfinal区别。

spring boot 你们也要熟悉，常用注解，与spring springMVC的区别

实际介绍一下你的项目，以及项目特色  
用MQ解决问题的具体场景，解决了哪些问题 [mq介绍][mq] [mq问题解决][mq 1] [mq消费重复][mq 2]  
实际负责的具体工作，参与过前台的开发工作吗  
基础知识掌握：JAVA中的异常  
运行时异常和一般异常的区别  
虚拟机是如何处理异常的  
[JAVA里面的网络编程][JAVA]  
数据库了解吗，用过索引吗，能说一下索引的优缺点吗  
工作中遇到什么样的困难呢？

在原项目中承担什么职责  
项目使用规模如何，用户量，流水量如何  
工作中碰到什么困难  
static静态修饰符应用场景  
流程控制  
redis优缺点

介绍下项目  
zoomkeeper了解程度  
项目使用量多大，怎么评估使用量的  
[JAVA里面的反射，涉及哪些模式，应用场景如何，能解决哪些问题][JAVA 1]  
JAVA里面的访问修饰符，关键字的用法分哪几种

接触过哪些项目，详细介绍一下  
项目中使用到的技术  
遇到过哪些难点，应用是分布式的吗，  
对redis的理解

自我介绍  
做过的项目  
有特色的项目  
比较擅长技术还是业务，技术水平如何  
开发相关的基础知识怎么样，sprint等，  
java基础如何  
说一下Java里面的IO流  
说一下对spring理解  
工作中有没有遇到难点，怎么解决的

技术方面哪些比较擅长，哪些方面掌握得比较好  
Java相关知识，说一下stream特征  
解释下Java里面的容器  
在外呼已经参与了开发了吗，具体在做什么事情，涉及哪些需求

解决得比较困难的问题，处理的过程  
redis使用注意事项  
redis穿透了解吗  
实际接触过哪些项目，具体介绍一下

介绍一下你的项目  
在里面承担什么角色  
使用量如何  
说一下stream反转  
[tomcat用过几种部署方式][tomcat]  
[学习链接][Link 2]

### tag1 ###

#### 1.如何解决中文乱码 ####

#### 2.spring springmvc组件 ####

#### 3.Mybatis模糊查询 foreach ####

#### 4.springboot认识 ####

#### 5.HashMap常问题 ####

[扩容、转红黑树、退化链表、Hash优化)][Hash]

#### 6.过滤器和拦截器 ####

[springboot过滤拦截][springboot]

#### 7.JVM ####

[分区详解][Link 3]  
[JVM面题][JVM]

### tag2汇总 ###

### 1.多线程/线程锁/线程池/核心、最大线程数/任务队列/拒绝策略 ###

[多线程知识][Link 4]  
[拒绝策略][Link 5]

### 3.hashmap与treemap区别 ###

### 4.IOC springAop 动态代理实现 ###

### 5.linux相关命令（查看端口占用…） ###

### 6.编写dockerfile需要注意的地方 ###

### 7.innodb底层 B+tree 与B tree 区别 聚簇索引/非聚簇索引 ###

### 8.线程池 核心线程数和最大线程数 任务队列 ###

### 9.java8新特性 volitate ###

### 10.springboot读取配置文件方式 多环境配置文件切换 ###

[读取方式][Link 6]

### tag3汇总 ###

### 1.多线程 nio/io ###

### 2.网关 ###

### 3.存储引擎 ###

### 4.mysql一级/二级缓存/安全性 undo、redo日志 /[分库分表][Link 7]/事务隔离级别 脏读数据 MySQL数据结构以及原因 ###

[二级缓存不安全][Link 8]  
[事务详解][Link 9]  
[undo/redo日志][undo_redo]  
[binlog日志详解][binlog]  
[mysql面试题总结][mysql]

### 5.HashMap扩容 ConcurrentHashMap ArrayList容量以及扩容 ArrayList与LinkedList区别 ###

### 6.抽象类与接口区别 ###

### 7.springIOC springboot自动装配 ###

### 8.多线程 线程锁 syncronized 锁（乐观悲观） ###

### 9.nginx用过吗 里面的upstring、、、 ###

### 10.IOC AOP 动态代理 代理模式 注入bean方法 ###

### 11.redis 集群/内存机制/日志/哨兵/ [幂等性][Link 10] ###

### 12.mybatis缓存 mybatis如何返回主键id ###

[mybatis缓存][mybatis]

<insert id="add" parameterType="EStudent" useGeneratedKeys="true" keyProperty="id">
      insert into TStudent(name, age) values(#{ name}, #{ age})
    </insert>

### 13.valitate final static ###

[volatile][]  
[final static][]

### tag4汇总 ###

## 1.HashMap底层实现 ##

基于Java8以上更改

## 2.ArrayList与LinkedList区别 ##

ArrayList 底层基于动态数组，随机访问元素效率高，向集合尾部添加元素效率高，删除或者在其他位置添加元素效率低（需要移动数组）；LinkedList 基于链表的动态数组，数据添加和删除效率高，只需要改变指针指向即可，但是访问数据的平均效率低，需要对链表进行遍历

## 3.redis雪崩 ##

[redis异常介绍链接][redis]

## 4.连接池作用 ##

[连接池详解][Link 11]

## 5.mq ##

## 6.数据库重连 ##

## 7.springboot配置 ##

## 8.log4j日志体积过大 ##

## 9.内存溢出和内存泄露以及解决 ##

[内存溢出和内存泄露详解][Link 12]

## 10.遇到过最难的问题 ##

## 11.pageHelper原理 ##

## 12.docker 查看容器信息 设置容易内存 ##

## 13.springboot 过滤器拦截器区别 ##

[70]: https://blog.csdn.net/a646705816/article/details/108740946?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162841262216780264078191%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162841262216780264078191&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_click~default-7-108740946.pc_search_result_cache&utm_term=spring&spm=1018.2226.3001.4187
[Link 1]: https://blog.csdn.net/A_BlackMoon/article/details/85692911
[mq]: https://blog.csdn.net/ThinkWon/article/details/104588612?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162812684716780265459236%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162812684716780265459236&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-16-104588612.first_rank_v2_pc_rank_v29&utm_term=mq%E6%B6%88%E6%81%AF%E4%B8%A2%E5%A4%B1&spm=1018.2226.3001.4187
[mq 1]: https://blog.csdn.net/weixin_43241706/article/details/109274973?ops_request_misc=&request_id=&biz_id=102&utm_term=%E6%B6%88%E6%81%AF%E7%A7%AF%E5%8E%8B&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-3-.first_rank_v2_pc_rank_v29&spm=1018.2226.3001.4187
[mq 2]: https://blog.csdn.net/A_BlackMoon/article/details/85197785?utm_medium=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-2.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-2.control
[JAVA]: https://blog.csdn.net/ThinkWon/article/details/104903925?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162807201416780357231334%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162807201416780357231334&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-2-104903925.first_rank_v2_pc_rank_v29&utm_term=%E7%BD%91%E7%BB%9C%E7%BC%96%E7%A8%8B&spm=1018.2226.3001.4187
[JAVA 1]: https://blog.csdn.net/xiaokang123456kao/article/details/76268527?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162807243916780357267005%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162807243916780357267005&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-3-76268527.first_rank_v2_pc_rank_v29&utm_term=java%E5%B7%A5%E5%8E%82%E6%A8%A1%E5%BC%8F%E5%BA%94%E7%94%A8%E5%9C%BA%E6%99%AF&spm=1018.2226.3001.4187
[tomcat]: https://blog.csdn.net/omelon1/article/details/78752828?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162807249516780274140035%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162807249516780274140035&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-1-78752828.first_rank_v2_pc_rank_v29&utm_term=tomcat%E7%94%A8%E8%BF%87%E5%87%A0%E7%A7%8D%E9%83%A8%E7%BD%B2%E6%96%B9%E5%BC%8F&spm=1018.2226.3001.4187
[Link 2]: https://www.cnblogs.com/jobbible/category/1310023.html
[Hash]: https://blog.csdn.net/yakax/article/details/108422101?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162669965816780261922035%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162669965816780261922035&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-7-108422101.first_rank_v2_pc_rank_v29&utm_term=hashmap%E9%93%BE%E8%A1%A8%E8%BD%AC%E7%BA%A2%E9%BB%91%E6%A0%91&spm=1018.2226.3001.4187
[springboot]: https://blog.csdn.net/java_collect/article/details/80873686?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162676720816780265424899%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162676720816780265424899&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-80873686.first_rank_v2_pc_rank_v29&utm_term=springboot%E6%8B%A6%E6%88%AA%E5%99%A8&spm=1018.2226.3001.4187
[Link 3]: https://www.cnblogs.com/jobbible/p/9762299.html
[JVM]: https://blog.csdn.net/qq_41701956/article/details/100074023?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162675180916780261988544%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162675180916780261988544&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-2-100074023.first_rank_v2_pc_rank_v29&utm_term=jvm%E9%9D%A2%E8%AF%95%E9%A2%98&spm=1018.2226.3001.4187
[Link 4]: https://blog.csdn.net/qq_37875585/article/details/89338385?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162656829616780271585014%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162656829616780271585014&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-89338385.first_rank_v2_pc_rank_v29&utm_term=%E5%A4%9A%E7%BA%BF%E7%A8%8B%E9%9D%A2%E8%AF%95%E9%A2%98&spm=1018.2226.3001.4187
[Link 5]: https://blog.csdn.net/suifeng629/article/details/98884972?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162648329516780264084702%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162648329516780264084702&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-98884972.first_rank_v2_pc_rank_v29&utm_term=%E7%BA%BF%E7%A8%8B%E6%B1%A0%E6%8B%92%E7%BB%9D%E7%AD%96%E7%95%A5&spm=1018.2226.3001.4187
[Link 6]: https://blog.csdn.net/kxj19980524/article/details/85120608?ops_request_misc=&request_id=&biz_id=102&utm_term=springboot%E5%A6%82%E4%BD%95%E8%AF%BB%E5%8F%96%E9%85%8D%E7%BD%AE%E6%96%87%E4%BB%B6%E7%9A%84%E5%80%BC&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduweb~default-0-.first_rank_v2_pc_rank_v29&spm=1018.2226.3001.4187
[Link 7]: https://blog.csdn.net/A_BlackMoon/article/details/86286735
[Link 8]: https://blog.csdn.net/J080624/article/details/78668649?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162653120216780269829548%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162653120216780269829548&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-1-78668649.first_rank_v2_pc_rank_v29&utm_term=mybatis%E4%BA%8C%E7%BA%A7%E7%BC%93%E5%AD%98%E6%AD%A5%E9%AA%A4&spm=1018.2226.3001.4187
[Link 9]: https://blog.csdn.net/zhouym_/article/details/90381606?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162631749516780264036795%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162631749516780264036795&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-90381606.first_rank_v2_pc_rank_v29&utm_term=%E4%BA%8B%E5%8A%A1%E9%9A%94%E7%A6%BB%E7%BA%A7%E5%88%AB&spm=1018.2226.3001.4187
[undo_redo]: https://blog.csdn.net/qq_43255017/article/details/106442887?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162639601116780264027316%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162639601116780264027316&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-106442887.first_rank_v2_pc_rank_v29&utm_term=%E4%BA%8B%E5%8A%A1&spm=1018.2226.3001.4187
[binlog]: https://blog.csdn.net/selfsojourner/article/details/91379739?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162639775916780271568645%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162639775916780271568645&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-1-91379739.first_rank_v2_pc_rank_v29&utm_term=row%EF%BC%8Cstatement%E8%B7%9Fmixed&spm=1018.2226.3001.4187
[mysql]: https://blog.csdn.net/ThinkWon/article/details/104778621?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162640042016780265477670%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162640042016780265477670&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-4-104778621.first_rank_v2_pc_rank_v29&utm_term=mysql%E4%B8%80%E7%BA%A7/%E4%BA%8C%E7%BA%A7%E7%BC%93%E5%AD%98&spm=1018.2226.3001.4187
[Link 10]: https://blog.csdn.net/zhenwei1994/article/details/94359724?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162833345016780261989743%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162833345016780261989743&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-2-94359724.pc_search_result_cache&utm_term=rediss%E5%AE%9E%E7%8E%B0%E6%B6%88%E6%81%AF%E5%B9%82%E7%AD%89%E6%80%A7&spm=1018.2226.3001.4187
[mybatis]: https://blog.csdn.net/llziseweiqiu/article/details/79413130?utm_medium=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-4.control&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~BlogCommendFromMachineLearnPai2~default-4.control
[volatile]: https://blog.csdn.net/u012723673/article/details/80682208?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162656831716780255291132%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162656831716780255291132&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~top_positive~default-1-80682208.first_rank_v2_pc_rank_v29&utm_term=volatile%20&spm=1018.2226.3001.4187
[final static]: https://blog.csdn.net/qq_44543508/article/details/102691425?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162657249916780265424870%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162657249916780265424870&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-1-102691425.first_rank_v2_pc_rank_v29&utm_term=static%20final%20volitzte&spm=1018.2226.3001.4187
[redis]: https://blog.csdn.net/ThinkWon/article/details/103522351?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162625576516780264057556%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162625576516780264057556&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-1-103522351.pc_search_result_cache&utm_term=redis%E9%9D%A2%E8%AF%95%E9%A2%98&spm=1018.2226.3001.4187
[Link 11]: https://blog.csdn.net/cbmljs/article/details/87858536?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162625677616780357285254%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162625677616780357285254&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-1-87858536.first_rank_v2_pc_rank_v29&utm_term=%E8%BF%9E%E6%8E%A5%E6%B1%A0%E4%BD%9C%E7%94%A8&spm=1018.2226.3001.4187
[Link 12]: https://blog.csdn.net/jie1175623465/article/details/81121548?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162625345716780261962676%2522%252C%2522scm%2522%253A%252220140713.130102334.pc%255Fall.%2522%257D&request_id=162625345716780261962676&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~first_rank_v2~rank_v29-1-81121548.pc_search_result_cache&utm_term=jvm%E5%86%85%E5%AD%98%E6%B3%84%E6%BC%8F%E5%92%8C%E6%BA%A2%E5%87%BA&spm=1018.2226.3001.4187