<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[化繁为简：为先，为专，为强]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/bright60</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; bright60]]></copyright><item><title><![CDATA[CentOS的几个命令]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90604476</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90604476</guid><author>bright60</author><pubDate>Mon, 27 May 2019 15:34:09 +0800</pubDate><description><![CDATA[查看CPU
[root@llpt7 ~]# cat /proc/cpuinfo | grep name | cut -f2 -d: | uniq -c
  12 Intel(R) Xeon(R) CPU E5-2620 v3 @ 2.40GHz
12核

[root@llpt7 ~]# getconf LONG_BIT
64
当前cpu运行在64位下

2.查看内存
[mushme@in...]]></description><category></category></item><item><title><![CDATA[Centos6.7安装VBoxLinuxAdditions]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90604388</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90604388</guid><author>bright60</author><pubDate>Mon, 27 May 2019 15:30:28 +0800</pubDate><description><![CDATA[mkdir /media/cdromd
mount /dev/sr0 /media/cdrom

把sr0挂载到 /media/cdrom 里，如果没有cdrom，可以先mkdir一个，挂载到其他位置也可以。

sh ./VBoxLinuxAdditions.run

几个错误：
1. Installing the Window System drivers …fail!
 (Could n...]]></description><category></category></item><item><title><![CDATA[java压缩zip文件中文乱码问题]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90516662</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90516662</guid><author>bright60</author><pubDate>Fri, 24 May 2019 15:06:53 +0800</pubDate><description><![CDATA[用java来打包文件生成压缩文件，有两个地方会出现乱码

1、内容的中文乱码问题，这个问题网上很多人给出了解决方法，两种：修改sun的源码；使用开源的类库org.apache.tools.zip.ZipOutputStream和org.apache.tools.zip.ZipEntry，这两个类ant.jar中有，可以下载使用即可，毫无疑问，选择后者更方便

2、压缩文件注释的中文乱码问题：zo...]]></description><category></category></item><item><title><![CDATA[POI 3.8版本导出excel :java.lang.RuntimeException: java.io.IOException: No such file or directory]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90510280</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90510280</guid><author>bright60</author><pubDate>Fri, 24 May 2019 09:01:21 +0800</pubDate><description><![CDATA[POI 3.8版本导出excel问题



使用poi 3.8版本导出excel时，在本地和测试环境都是好使的，但是部署到线上环境（linux＋tomcat）后直接报错，报错日志如下图：

java.lang.RuntimeException: java.io.IOException: No such file or directory
    at org.apache.poi.xss...]]></description><category></category></item><item><title><![CDATA[Eclipse中Maven中央仓库索引的建立]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90411680</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90411680</guid><author>bright60</author><pubDate>Tue, 21 May 2019 17:46:02 +0800</pubDate><description><![CDATA[在maven中导入jar包可能会遇到问题，网上有很多资源讲如何导入。但面临的第一个问题时，有的IDE中并不会出现正常的select界面，需要配置下：

问题：

如图，点击“Add”添加时会出现如下问题



原因：应该是maven自动下载index组件的功能没有开启，查看

这一步很重要：

"Window" --&gt; "Preferences" and choose Maven i...]]></description><category></category></item><item><title><![CDATA[linux 快速删除大量/大文件]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/90370337</link><guid>https://blog.youkuaiyun.com/bright60/article/details/90370337</guid><author>bright60</author><pubDate>Mon, 20 May 2019 10:30:30 +0800</pubDate><description><![CDATA[转载：https://blog.youkuaiyun.com/liuxiao723846/article/details/51626305

1、快速删除大量文件：

假如你要在linux下删除大量文件，比如100万、1000万，像/var/spool/clientmqueue/的mail邮件，/usr/local/nginx/proxy_temp的nginx缓存等，那么rm -rf *可能就不好使了。 rs...]]></description><category></category></item><item><title><![CDATA[CentOS6.x 虚拟机克隆导致网卡的问题]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/79756825</link><guid>https://blog.youkuaiyun.com/bright60/article/details/79756825</guid><author>bright60</author><pubDate>Fri, 30 Mar 2018 14:08:47 +0800</pubDate><description><![CDATA[1. 启动信息 /var/log/message2. 检查 /etc/udev/rules.d/70-persistent-net.rules 文件内容，正常应该是eth0和另外一个网卡eth1，如果有其它的说明有问题，可以删除其它的# This file was automatically generated by the /lib/udev/write_net_rules# program, ...]]></description><category></category></item><item><title><![CDATA[Mysql 慢日志配置和分析]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/79148834</link><guid>https://blog.youkuaiyun.com/bright60/article/details/79148834</guid><author>bright60</author><pubDate>Wed, 24 Jan 2018 11:42:26 +0800</pubDate><description><![CDATA[[mysqld]

// 开启慢查询
slow_query_log = 1

// 设置慢查询时间 10s，如果不配置long_query_time，默认是10s
long_query_time=10

// 慢查询日志保存路径
slow_query_log_file= /var/log/server/mysql/mysql_sloq.log

// 开启 记录没有使用索引查]]></description><category></category></item><item><title><![CDATA[想成为物联网领域的小米 你必须要看的10个原则]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/78948766</link><guid>https://blog.youkuaiyun.com/bright60/article/details/78948766</guid><author>bright60</author><pubDate>Tue, 02 Jan 2018 09:14:19 +0800</pubDate><description><![CDATA[导读： 通过整合传感器、数据连接、云存储、数据加工、分析、机器学习等多项技术内容，物联网将改写无数个行业内的格局，从医疗保健到制造业再到社会公用事业、交通、政府等领域。





物联网（IOT）给公司企业带来了充满无限遐想的商业机会，行业内的各种规则都将被它所改写。根据调研公司 Gartner 所提供的数据：到了
 2020 年，有将近 2000 万的数字设备都纳入到物联网当中，而]]></description><category></category></item><item><title><![CDATA[APM -  JAVA 性能优化工具]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/78931241</link><guid>https://blog.youkuaiyun.com/bright60/article/details/78931241</guid><author>bright60</author><pubDate>Fri, 29 Dec 2017 14:33:20 +0800</pubDate><description><![CDATA[APM缩写是  Application Performance Management & Monitoring，应用程序的性能服务管理和监控，






用到过一个工具叫TProfiler，来查看方法耗时的，可以具体到每一个get,set方法的耗时，当然可以通过设置包路径，来过滤不必要的耗时信息，TProfiler是淘宝自研的性能监控工具，源码地址：http://code.taob]]></description><category></category></item><item><title><![CDATA[JAVA8中JVM的变化和优化]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/78930752</link><guid>https://blog.youkuaiyun.com/bright60/article/details/78930752</guid><author>bright60</author><pubDate>Fri, 29 Dec 2017 14:29:35 +0800</pubDate><description><![CDATA[在JVM中，我们经常提到的就是堆（Head）了，堆确实很重要，其实，除了堆之外，还有几个重要的模块，看下图：





     大多数情况下，我们并不需要关心JVM的底层，但是如果了解它的话，对于我们系统调优是非常有用的，在这里面了解JVM的GC原理，是非常重要的一块知识。
 我们都知道对于一个大型网站，如果JVM频繁发生FULL GC，那么将会是致命的危险，不仅仅会造成网站响应迟]]></description><category></category></item><item><title><![CDATA[shell中使用read如何换行]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/72638548</link><guid>https://blog.youkuaiyun.com/bright60/article/details/72638548</guid><author>bright60</author><pubDate>Tue, 23 May 2017 12:13:02 +0800</pubDate><description><![CDATA[例如：

read -p $'Please Enter the percent [30 between 100]\x0a The value is  Default = 80   :' scale_percent




we use above syntax to insert hex values, we insert \x0a which
 is the hexadecima]]></description><category></category></item><item><title><![CDATA[nginx+naxsi建立WAF防火墙]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/67640252</link><guid>https://blog.youkuaiyun.com/bright60/article/details/67640252</guid><author>bright60</author><pubDate>Tue, 28 Mar 2017 18:42:33 +0800</pubDate><description><![CDATA[参考： http://blog.youkuaiyun.com/chen_jianjian/article/details/51880830


什么是naxsi

http://bluereader.org/article/32032789]]></description><category></category></item><item><title><![CDATA[Nginx手机访问检测Nginx Redirect Mobile / Smart Phone Traffic To Mobile Version Of the Web Site]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/67637923</link><guid>https://blog.youkuaiyun.com/bright60/article/details/67637923</guid><author>bright60</author><pubDate>Tue, 28 Mar 2017 16:01:13 +0800</pubDate><description><![CDATA[Reference: https://www.cyberciti.biz/faq/setting-up-nginx-to-redirect-mobile-users-to-subdomain/


https://gist.github.com/dangayle/2919206













curl -I -A "UserAgentString" h]]></description><category></category></item><item><title><![CDATA[virtualBox虚拟机linux（CentOS）硬盘扩容]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/65434676</link><guid>https://blog.youkuaiyun.com/bright60/article/details/65434676</guid><author>bright60</author><pubDate>Thu, 23 Mar 2017 09:07:29 +0800</pubDate><description><![CDATA[对于Win7+VirtualBox+CentOS的组合，系统存储不够用，使用VirtualBox 4 版本以上的可以方便、快速的扩容。


VirtualBox 中虚拟硬盘有几种形式，VMDK，VDI，VHD，HDD等，

对于VMDK是VMware开发并使用的，同时也被SUN的xVM、QEMU、SUSE Studio、.NET DiscUtils支持，所以兼容性会好些

VDI是V]]></description><category></category></item><item><title><![CDATA[virtualbox安装centos后无法上网解决办法]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/60466065</link><guid>https://blog.youkuaiyun.com/bright60/article/details/60466065</guid><author>bright60</author><pubDate>Sun, 05 Mar 2017 12:10:22 +0800</pubDate><description><![CDATA[设置virtualbox的网络连接方式，如下图使用桥接方式，桥接的网卡为宿主正在上网的网卡，现在我是通过无线来上网的，所以选择1x1 11b/g/n Wireless LAN PCI Express Half Mini Card Adapter这个无线网卡。   (实际情况：网络地址转换NAT方式也可以)
在命令行中运行 dhclient eth0，这时将会自动分配ip给eth0。这样每次重启电]]></description><category></category></item><item><title><![CDATA[java.io.FileNotFoundException: Could not resolve XML resource [null] with public ID [null], system I]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/53502345</link><guid>https://blog.youkuaiyun.com/bright60/article/details/53502345</guid><author>bright60</author><pubDate>Wed, 07 Dec 2016 10:25:54 +0800</pubDate><description><![CDATA[启动Tomcat报错： java.io.FileNotFoundException: Could not resolve XML resource [null] with public ID [null], system ID [.


检查tomcat6.0.35没问题，高于6.0.35会报错。


解决办法：


tomcat 7.0.52开始的版本才会出这个问题，是因为安全]]></description><category></category></item><item><title><![CDATA[项目导入时报错：The import javax.servlet cannot be resolved]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/52199474</link><guid>https://blog.youkuaiyun.com/bright60/article/details/52199474</guid><author>bright60</author><pubDate>Sat, 13 Aug 2016 15:14:57 +0800</pubDate><description><![CDATA[javaException





Error：

    The import javax.servlet cannot be resolved

    The import javax.servlet.http.HttpServletRequest
 cannot be resolved

Description:

    我们经常会把别人的项目copy到自]]></description><category></category></item><item><title><![CDATA[兼容各浏览器的Zero Clipboard js+swf实现的复制功能使用方法]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/51811774</link><guid>https://blog.youkuaiyun.com/bright60/article/details/51811774</guid><author>bright60</author><pubDate>Sat, 02 Jul 2016 17:25:26 +0800</pubDate><description><![CDATA[开发中经常会用到复制的功能，在 IE 下实现比较简单。但要想做到跨浏览器比较困难了。本文将介绍一个跨浏览器的库类 Zero Clipboard 。它利用 Flash 进行复制，所以只要浏览器装有 Flash 就可以运行，而且比 IE 的 document.execCommand("Copy") 更加灵活。 

Zero Clipboard 的实现原理 
Zero Clipboard 利用 F]]></description><category></category></item><item><title><![CDATA[HBase简介（很好的梳理资料）]]></title><link>https://blog.youkuaiyun.com/bright60/article/details/50788020</link><guid>https://blog.youkuaiyun.com/bright60/article/details/50788020</guid><author>bright60</author><pubDate>Thu, 03 Mar 2016 13:57:47 +0800</pubDate><description><![CDATA[HBase简介（很好的梳理资料） - johnny_HITWH

 
原文  http://www.cnblogs.com/johnnyflute/p/3654426.html
 




一、   简介

history 


started by chad walters and jim

2006.11 G release paper on BigTable]]></description><category></category></item></channel></rss>