<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Ordinary_Data]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Ordinary_Data</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Ordinary_Data]]></copyright><item><title><![CDATA[多线程-竞赛抢答]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842971</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842971</guid><author>Ordinary_Data</author><pubDate>Tue, 13 Sep 2022 22:20:10 +0800</pubDate><description><![CDATA[对于这一个多线程的操作由于里面需要牵扯到数据的返回问题，那么现在最好使用的 Callable.是比较方便的处理形式]]></description><category></category></item><item><title><![CDATA[多线程-生产电脑]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842832</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842832</guid><author>Ordinary_Data</author><pubDate>Tue, 13 Sep 2022 22:16:12 +0800</pubDate><description><![CDATA[在本程序之中实现的就是一个标准的生产者与消费者的处理模型]]></description><category></category></item><item><title><![CDATA[多线程-数字加减]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842654</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126842654</guid><author>Ordinary_Data</author><pubDate>Tue, 13 Sep 2022 22:00:24 +0800</pubDate><description><![CDATA[注：这个程序的核心本质在于：加一个，减一个，整体的计算结果应该只在0，-1，1之间循环出现。]]></description><category></category></item><item><title><![CDATA[幸运客户抽奖]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126085880</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/126085880</guid><author>Ordinary_Data</author><pubDate>Sun, 31 Jul 2022 15:12:22 +0800</pubDate><description><![CDATA[随机幸运数字客户抽奖]]></description><category></category></item><item><title><![CDATA[分布式数据库系统的透明性]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/124250719</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/124250719</guid><author>Ordinary_Data</author><pubDate>Mon, 18 Apr 2022 15:27:55 +0800</pubDate><description><![CDATA[]]></description><category></category></item><item><title><![CDATA[常用正则表达式]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/122324671</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/122324671</guid><author>Ordinary_Data</author><pubDate>Wed, 05 Jan 2022 15:36:04 +0800</pubDate><description><![CDATA[一、校验数字的表达式
数字：^[0-9]*$
n位的数字：^\d{n}$
至少n位的数字：^\d{n,}$
m-n位的数字：^\d{m,n}$
零和非零开头的数字：^(0|[1-9][0-9]*)$
非零开头的最多带两位小数的数字：^([1-9][0-9]*)+(\.[0-9]{1,2})?$
带1-2位小数的正数或负数：^(\-)?\d+(\.\d{1,2})$
正数、负数、和小数：^(\-|\+)?\d+(\.\d+)?$
有两位小数的正实数：^[0-9]+(\.[0-9]{2})?$
有1~3位小数的]]></description><category></category></item><item><title><![CDATA[python中字符串方法]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/122079382</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/122079382</guid><author>Ordinary_Data</author><pubDate>Wed, 22 Dec 2021 10:18:26 +0800</pubDate><description><![CDATA[常用字符串常量：
string.digits：包含数字0~9的字符串
string.letters：包含所有字母(大写或小写字符串，在python3.0中，使用string.ascii-letters代替)
string.lowercase：包含所有小写字母的字符串
string.printable：包含所有可打印字符的字符串
string.punctuation：包含所有标点的字符串
string.uppercase：包含所有大写字母的字符串

案例：随机生成密码
import string #strin]]></description><category></category></item><item><title><![CDATA[Servlet两种页面跳转的区别]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121275681</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121275681</guid><author>Ordinary_Data</author><pubDate>Thu, 11 Nov 2021 20:52:21 +0800</pubDate><description><![CDATA[一、response.sendRedirect(“跳转位置”)
客户重定向
跳转数据丢失
跳转后浏览器地址发生变化
跳转地址需要添加项目名
二、request.getRequestDispatcher(“跳转位置”).forward(request,response);
服务器上的跳转
跳转携带数据跳转
跳转后浏览器地址不变化
跳转地址不需要添加项目名

...]]></description><category></category></item><item><title><![CDATA[IntelliJ Idea 常用快捷键列表]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121212770</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121212770</guid><author>Ordinary_Data</author><pubDate>Mon, 08 Nov 2021 17:51:53 +0800</pubDate><description><![CDATA[IntelliJ Idea 常用快捷键列表
Ctrl+Shift + Enter，语句完成
“！”，否定完成，输入表达式时按 “！”键
Ctrl+E，最近的文件
Ctrl+Shift+E，最近更改的文件
Shift+Click，可以关闭文件
Ctrl+[ OR ]，可以跑到大括号的开头与结尾
Ctrl+F12，可以显示当前文件的结构
Ctrl+F7，可以查询当前元素在当前文件中的引用，然后按 F3 可以选择
Ctrl+N，可以快速打开类
Ctrl+Shift+N，可以快速打开文件
Alt+Q，可以看到当前方]]></description><category></category></item><item><title><![CDATA[hadoop完全分布式]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121211585</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121211585</guid><author>Ordinary_Data</author><pubDate>Mon, 08 Nov 2021 17:12:14 +0800</pubDate><description><![CDATA[hadoop完全分布式
1.关闭防火墙
systemctl stop firewalld.service
2.查看防火墙状态
firewall-cmd --state
3.关闭防火墙开机自启
systemctl disable firewalld.service
4.修改主机名
vi /etc/hostname
5.修改虚拟机映射文件
vi /etc/hosts
6.修改windows里的映射
C:\Windows\System32\drivers\etc\hosts （添加虚拟机IP地址与主机名）
7.修]]></description><category></category></item><item><title><![CDATA[VMware虚拟网络与本地网络配置]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121113659</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121113659</guid><author>Ordinary_Data</author><pubDate>Wed, 03 Nov 2021 08:57:03 +0800</pubDate><description><![CDATA[VMware虚拟网络与本地网络同步配置
1.虚拟网络编辑器
1）点击编辑，打开虚拟网络编辑器，更改设置

2）NAT模式	修改	子网IP	网关
修改子网IP后直接确认，再去查看其他是否同步	


3）修改DHCP设置
​		配置IP地址范围


2.本地网络适配器





...]]></description><category></category></item><item><title><![CDATA[JAVA题目]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121089123</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/121089123</guid><author>Ordinary_Data</author><pubDate>Mon, 01 Nov 2021 21:35:55 +0800</pubDate><description><![CDATA[public class Practice02 {
    public static void main(String[] args) {
        int count = 0;  //含数字4的个数
        int num = 0; //一共多少数
        for (int i = 10000; i &lt;= 99999; i++) {
            if(i%10==4 | i%100/10==4 | i%1000/100==4 | i/1000%10==4 |i/.]]></description><category></category></item><item><title><![CDATA[idea中Scala项目环境搭建]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/120658106</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/120658106</guid><author>Ordinary_Data</author><pubDate>Fri, 08 Oct 2021 19:32:19 +0800</pubDate><description><![CDATA[IDEA中Scala项目环境搭建
1.scala环境搭建
1）安装步骤
（1）首先确保jdk1.8安装成功
（2）下载对应的Scala安装文件scala-2.11.8.zip
（3）解压scala-2.11.8.zip，解压到E:\scala
（4）配置Scala的环境变量

2）测试
定义两个变量n和n2，并计算n和m两个变量的和

2.Scala插件安装
默认情况下IDEA不支持Scala的开发，需要安装Scala插件。

安装后点击重启idea即可
3.idea环境创建
1）步骤1：file-&gt;]]></description><category></category></item><item><title><![CDATA[IDEA新建Maven Java Web项目]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/120501060</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/120501060</guid><author>Ordinary_Data</author><pubDate>Mon, 27 Sep 2021 08:43:49 +0800</pubDate><description><![CDATA[https://www.cnblogs.com/sky-zn/p/12843622.html


]]></description><category></category></item><item><title><![CDATA[Hadoop安装操作大全]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/118491098</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/118491098</guid><author>Ordinary_Data</author><pubDate>Mon, 05 Jul 2021 15:33:17 +0800</pubDate><description><![CDATA[第一节、配置网络IP地址：
打开配置文件vi /etc/sysconfig/network-scripts/ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR=192.168.206.10
NETMASK=255.255.255.0
GATEWAY=192.168.206.2
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCO]]></description><category></category></item><item><title><![CDATA[Hadoop大数据原理与应用实验大纲]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/118489601</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/118489601</guid><author>Ordinary_Data</author><pubDate>Mon, 05 Jul 2021 15:01:04 +0800</pubDate><description><![CDATA[Hadoop知识结构图一、部署全分布模式Hadoop集群二、实战HDFS三、MapReduce编程四、部署ZooKeeper集群和实战五、部署全分布模式HBase集群和实战六、部署本地模式Hive和实战七、部署Spark和Spark编程八、实战Sqoop九、实战Flume十、实战Kafka
一、部署全分布模式Hadoop集群

二、实战HDFS

三、MapReduce编程

四、部署ZooKeeper集群和实战

五、部署全分布模式HBase集群和实战

六、部署本地模式Hive和实战

七、部署Spar]]></description><category></category></item><item><title><![CDATA[Hadoop中条件控制语句的使用方法case when(实例)]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/111214113</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/111214113</guid><author>Ordinary_Data</author><pubDate>Tue, 15 Dec 2020 14:57:48 +0800</pubDate><description><![CDATA[数据：
1,zhangsan,18,beijing,20000
2,lisi,28,shanghai,1500
3,wangwu,38,wuhan,4000
4,zhaoliu,35,changsha,10050
5,tianqi,23,shijiazhuang,30000
6,wangba,45,qinhuangdao,28000
7,wushuai,55,haerbin,80000
//创建casewhen表
create table if not exists casewhen(
id int,
na]]></description><category></category></item><item><title><![CDATA[hadoop中count()函数的使用方法(实例)]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/110940202</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/110940202</guid><author>Ordinary_Data</author><pubDate>Sun, 13 Dec 2020 21:09:40 +0800</pubDate><description><![CDATA[–count举例
//数据：
1,mary,female,jiuye
4,white,male,jiuye
5,jack,male,jiuye
3,kitty,female,meijiuye
6,rose,female,meijiuye
2,tom,male,meijiuye
//创建countos表
create table if not exists countos(
id int,
name string,
sex string,
job string
)
row format delimited f]]></description><category></category></item><item><title><![CDATA[WordCount测试及执行jar包]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/110851363</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/110851363</guid><author>Ordinary_Data</author><pubDate>Tue, 08 Dec 2020 10:16:27 +0800</pubDate><description><![CDATA[WordCount测试及执行jar包
首先hadoop和jdk安装成功，可以version出版本
version -hadoop
version java
到hadoop创建input文件夹
复制所有hadoop下面的etc下面的hadoop所有的xml文件到刚刚创建的input文件夹
cp ./etc/hadoop/*.xml ./input

执行jar包，为了测试是否有符合正则表达式，
hadoop jar ./jar包文件路径 grep input ./output ‘dfs[a-z]’
hadoo]]></description><category></category></item><item><title><![CDATA[Hadoop中伪分布式和完全分布式的搭建]]></title><link>https://blog.youkuaiyun.com/Ordinary_Data/article/details/108628991</link><guid>https://blog.youkuaiyun.com/Ordinary_Data/article/details/108628991</guid><author>Ordinary_Data</author><pubDate>Wed, 16 Sep 2020 19:45:52 +0800</pubDate><description><![CDATA[Hadoop中伪分布式和完全分布式的搭建
配置hadoop环境

（在终端进行）
1.首先关闭防火墙：
	关闭防火墙： service iptables stop
	查看防火墙状态：service iptables status
		如果出现：iptables :未运行防火墙 说明关闭成功
	关闭防火墙的开机自启:chkconfig iptables off

2.修改配置文件与IP地址：
	(vi模式进入)文件vi /etc/sysconfig/network-scripts/ifcfg-ens33
进行]]></description><category></category></item></channel></rss>