<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[HGengZ的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/HGengZ</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; HGengZ]]></copyright><item><title><![CDATA[memcached的安装(centOS7)]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/45696549</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/45696549</guid><author>HGengZ</author><pubDate>Wed, 13 May 2015 18:24:23 +0800</pubDate><description><![CDATA[安装libevent，命令如下
yum install libevent libevent-devel
安装memcached
wget http://memcached.org/latest 
tar -zxvf latest 
cd memcached-1.4.24/ 
./configure --prefix=/usr/local/memcached 
make && make ins]]></description><category></category></item><item><title><![CDATA[redis的安装(centOS7)]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/45694833</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/45694833</guid><author>HGengZ</author><pubDate>Wed, 13 May 2015 18:04:33 +0800</pubDate><description><![CDATA[redis的安装：
$ wget http://download.redis.io/releases/redis-3.0.1.tar.gz
$ tar xzf redis-3.0.1.tar.gz
$ cd redis-3.0.1
$ make
后台开启服务器
$ src/redis-server &

设置防火墙(没开启防火墙的可以跳过)
firewall-cmd --zone=public -]]></description><category></category></item><item><title><![CDATA[centOS7安装Mysql]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/45690143</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/45690143</guid><author>HGengZ</author><pubDate>Wed, 13 May 2015 11:23:52 +0800</pubDate><description><![CDATA[本文主要介绍centOS7下安装mysql和开启mysql远程控制。（如果出现无权限的话请先执行su root获取权限）

1. 我选择的是linux通用版，下载步骤忽略。跳转到放置Mysql的目录，解压，命令如下
tar MySQL-5.6.24-1.linux_glibc2.5.x86_64.rpm-bundle.tar

解压后会出现多个.rpm结尾的文件。
2. 安装，执行如下]]></description><category></category></item><item><title><![CDATA[RHEL7中防火墙firewalld的配置]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/45690881</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/45690881</guid><author>HGengZ</author><pubDate>Wed, 13 May 2015 11:21:11 +0800</pubDate><description><![CDATA[在RHEL7里有几种防火墙共存：firewalld、iptables、ebtables，默认使用firewalld来管理netfilter子系统，不过底层调用的命令仍然是iptables等。因为这几个daemon是冲突的建议禁用其他的几种服务： 


    systemctl mask iptables(ip6tables,ebtables)



 

    在firewa]]></description><category></category></item><item><title><![CDATA[虚拟机安装linux之网络配置]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/45670257</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/45670257</guid><author>HGengZ</author><pubDate>Tue, 12 May 2015 16:16:32 +0800</pubDate><description><![CDATA[在安装虚拟机和centOS7后使用NAT模式连接网络，作此记录。
虚拟机和centOS的安装过程略过。本文物理机是Windows7系统，虚拟机采用的是centOS7，VMware版本是11.0
0. 首先把虚拟机的网络配置为NAT模式，如图：

1. VMware上依次打开编辑-->虚拟网络编辑器-->选中VMnet8-->NAT设置，如图，记录子网IP和网关：


2. 在linu]]></description><category></category></item><item><title><![CDATA[扫描给定的包及其子包下面的所有类]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/42395963</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/42395963</guid><author>HGengZ</author><pubDate>Sun, 04 Jan 2015 18:27:51 +0800</pubDate><description><![CDATA[// 调用
getClasses(pkg);

	
	/**
	 * 从上下文类加载器中扫描给定的包及其子包下面的所有类
	 *
	 * @param packageName 包名
	 * @return 
	 * @throws ClassNotFoundException
	 * @throws IOException
	 */
	public static Class[] getClasse]]></description><category></category></item><item><title><![CDATA[DWR框架返回乱码]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/42391667</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/42391667</guid><author>HGengZ</author><pubDate>Sun, 04 Jan 2015 14:43:02 +0800</pubDate><description><![CDATA[DWR做反推时出现乱码，解决办法：
1. 在服务器反推前进行编码，代码如下：
		// 进行编码， 防止乱码
		String msg = "这该死的乱码啊";
		try {
			msg = URLEncoder.encode(msg, "UTF-8");
		} catch (UnsupportedEncodingException e1) {
			e1.printStackTrace]]></description><category></category></item><item><title><![CDATA[MyBatis的动态SQL详解]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/34106575</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/34106575</guid><author>HGengZ</author><pubDate>Tue, 24 Jun 2014 15:22:55 +0800</pubDate><description><![CDATA[MyBatis的动态SQL是基于OGNL表达式的，它可以帮助我们方便的在SQL语句中实现某些逻辑。

MyBatis中用于实现动态SQL的元素主要有：

 

ifchoose（when，otherwise）trimwheresetforeach

if就是简单的条件判断，利用if语句我们可以实现某些简单的条件选择。先来看如下一个例子：]]></description><category></category></item><item><title><![CDATA[html三种提示框]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/31364397</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/31364397</guid><author>HGengZ</author><pubDate>Mon, 16 Jun 2014 12:00:27 +0800</pubDate><description><![CDATA[警告框
[html]
 
 
 
function disp_alert() 
{ 
alert("我是警告框！！") 
} 
 
 
  
  
 显示警告框" /> 
  
  
  
 
 
确认框
[html]
 
 
 
function show_confirm() 
{ 
var r=confirm("Press a button!]]></description><category></category></item><item><title><![CDATA[javascript去除空格]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/31364159</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/31364159</guid><author>HGengZ</author><pubDate>Mon, 16 Jun 2014 11:55:24 +0800</pubDate><description><![CDATA[var temp = jumpTo.value.replace(/\s+/g,"");



去掉左边空格
 
name.replace(/^\s*/g,"");
 
去掉右边空格
 
name.replace(/\s*$/g,"");
 
去掉前后空格
 
smSmsModelName.replace(/(^\s*)|(\s*$)/g,"")
 
去掉所有的空格]]></description><category></category></item><item><title><![CDATA[常用正则表达式验证]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/31363211</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/31363211</guid><author>HGengZ</author><pubDate>Mon, 16 Jun 2014 11:50:48 +0800</pubDate><description><![CDATA[function checkPassword(pwd) {
        var password = pwd.value;
        var str = /^[a-zA-Z0-9_]{6,20}$/;
        if(!str.test(password)) {
            alert("密码只能为6到20位的数字或字母！");
            pwd.valu]]></description><category></category></item><item><title><![CDATA[<ul><li>标签实现<select>标签效果]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/31362049</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/31362049</guid><author>HGengZ</author><pubDate>Mon, 16 Jun 2014 11:39:45 +0800</pubDate><description><![CDATA[张三
		李四
		哈哈
		哇哈哈]]></description><category></category></item><item><title><![CDATA[el表达式取值顺序]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/30065599</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/30065599</guid><author>HGengZ</author><pubDate>Wed, 11 Jun 2014 16:16:36 +0800</pubDate><description><![CDATA[el表达式取值必须是servlet四大作用域]]></description><category></category></item><item><title><![CDATA[解决CSS样式修改后没反应]]></title><link>https://blog.youkuaiyun.com/HGengZ/article/details/28392955</link><guid>https://blog.youkuaiyun.com/HGengZ/article/details/28392955</guid><author>HGengZ</author><pubDate>Wed, 04 Jun 2014 10:20:30 +0800</pubDate><description><![CDATA[jin在jsp修改CSS样式后看不到效果，clear过了，tomcat重启过了，浏览器缓存清除过了，还是没反应]]></description><category></category></item></channel></rss>