<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Hello World专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/dream_ll</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; dream_ll]]></copyright><item><title><![CDATA[Linux 启动停止SpringBoot jar 程序部署Shell 脚本]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/79593078</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/79593078</guid><author>dream_ll</author><pubDate>Sat, 17 Mar 2018 16:11:56 +0800</pubDate><description><![CDATA[#!/bin/bash
#这里可替换为你自己的执行程序，其他代码无需更改
APP_NAME=common.jar

#使用说明，用来提示输入参数
usage() {
    echo &quot;Usage: sh 执行脚本.sh [start|stop|restart|status]&quot;
    exit 1
}

#检查程序是否在运行
is_exist(){
  pid=`ps -ef|grep $APP...]]></description><category></category></item><item><title><![CDATA[java复制文件]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/78330837</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/78330837</guid><author>dream_ll</author><pubDate>Tue, 24 Oct 2017 16:10:21 +0800</pubDate><description><![CDATA[使用Java7的Files类复制

如果你有一些经验在Java 7中你可能会知道,可以使用复制方法的Files类文件,从一个文件复制到另一个文件。 这是第四个方法的代码:
private static void copyFileUsingJava7Files(File source, File dest)
        throws IOException {    
        Fi]]></description><category></category></item><item><title><![CDATA[Mysql启动失败]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/77840057</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/77840057</guid><author>dream_ll</author><pubDate>Mon, 04 Sep 2017 17:53:41 +0800</pubDate><description><![CDATA[mysqld服务启动失败 /var/log/mysqld.log报错:
160523 12:58:03  mysqld started  
160523 12:58:03 [Warning] Can't create test file /mnt/sdb1/mysql/localhost.lower                                                 ]]></description><category></category></item><item><title><![CDATA[mysql优化之--skip-name-resolve]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/77677463</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/77677463</guid><author>dream_ll</author><pubDate>Tue, 29 Aug 2017 14:19:48 +0800</pubDate><description><![CDATA[同一IDC ,IDC内部有DNS服务器，对各服务器的IP做了反向解析，
但未对内网IP做反向解析，所以使用skip-name-resolve以后用内网地址向mysqlslap请求响应快了一半


mysql使用skip-name-resolve禁止掉DNS的查询。
mysql会在用户登录过程中对客户端IP进行DNS反查，不管你是使用IP登录还是域名登录，这个反查的过程都是在的。所以如果你]]></description><category></category></item><item><title><![CDATA[tomcat启动失败]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/77499046</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/77499046</guid><author>dream_ll</author><pubDate>Wed, 23 Aug 2017 09:58:09 +0800</pubDate><description><![CDATA[查看日志如下：
/usr/local/tomcat/bin/catalina.sh: line 434: /usr/java/jdk1.8.0_101//bin/java: 权限不够
启动时使用如下命令即可解决：
sudo ./startup.sh]]></description><category></category></item><item><title><![CDATA[Zookeeper的单机模式搭建]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/77480184</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/77480184</guid><author>dream_ll</author><pubDate>Tue, 22 Aug 2017 14:57:01 +0800</pubDate><description><![CDATA[Zookeeper的单机模式搭建

（1）下载ZooKeeper：http://pan.baidu.com/s/1pJlwbR9

（2）解压：tar -zxvf zookeeper-3.4.5.tar.gz 重命名：mv zookeeper-3.4.5 zk

（3）配置文件：创建一个配置文件zoo.cfg。conf/目录下有个zoo_sample.cfg，是样板配置文件，复制一份成]]></description><category></category></item><item><title><![CDATA[Failed to read schema document 'http://code.alibabatech.com/schema/dubbo/dubbo.xsd'问题解决方法]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/77260467</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/77260467</guid><author>dream_ll</author><pubDate>Wed, 16 Aug 2017 18:01:00 +0800</pubDate><description><![CDATA[一：如何下载dubbo.xsd


         dubbo.xsd在dubbo.jar包里，解压后在路径里dubbo\META-INF就可以找到。



二：配置

        window-->preferences-->xml-->xml Catalog]]></description><category></category></item><item><title><![CDATA[Integer与int的区别 2]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/76187096</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/76187096</guid><author>dream_ll</author><pubDate>Thu, 27 Jul 2017 14:07:57 +0800</pubDate><description><![CDATA[Java 为每个原始类型提供了包装类型：
  - 原始类型: boolean，char，byte，short，int，long，float，double
  - 包装类型：Boolean，Character，Byte，Short，Integer，Long，Float，Double
Integer与int的区别最基本的是：Ingeter是int的包装类，int的初值为0，Ingeter的初值为]]></description><category></category></item><item><title><![CDATA[Integer与int的区别]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/76187070</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/76187070</guid><author>dream_ll</author><pubDate>Thu, 27 Jul 2017 14:04:53 +0800</pubDate><description><![CDATA[Integer与int的区别我们耳熟详的有两点：1.Integer是int的包装类。2.Integer的默认初始值是null，而int的默认初试值是0。
     下面通过代码进行详细比较。
public class TestInteger {

    public static void main(String[] args) {
        int i = 128;
        ]]></description><category></category></item><item><title><![CDATA[mysql安装]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/76153028</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/76153028</guid><author>dream_ll</author><pubDate>Wed, 26 Jul 2017 17:06:31 +0800</pubDate><description><![CDATA[1.假设已经有mysql-5.5.10.tar.gz以及cmake-2.8.4.tar.gz两个源文件

(1)先安装cmake（mysql5.5以后是通过cmake来编译的）

[root@ rhel5 local]#tar -zxv -f cmake-2.8.4.tar.gz[root@ rhel5 local]#cd cmake-2.8.4[root@ rhel5 cmake-2.8]]></description><category></category></item><item><title><![CDATA[处理mysql启动报错Table 'mysql.plugin' doesn't exis]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/76152907</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/76152907</guid><author>dream_ll</author><pubDate>Wed, 26 Jul 2017 16:58:35 +0800</pubDate><description><![CDATA[由于缺少了mysql.plugin表所致的，不过现在连启动都启动不了，怎样创建表呢？所以肯定是其他原因导致的，于时继续网上找继续试，最后找到了这个处理方法，进入mysql安装后的目录scripts执行以下语句：
[root@localhost scripts]#
 ./mysql_install_db --user=mysql --basedir=/home/mysql5627 --datad]]></description><category></category></item><item><title><![CDATA[libc.so.6: version `GLIBC_2.14' not found]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73870616</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73870616</guid><author>dream_ll</author><pubDate>Thu, 29 Jun 2017 10:18:20 +0800</pubDate><description><![CDATA[下载 glibc-2.14.1.tar.bz2 安装 


# tar -xjf glibc-2.14.1.tar.bz2

# cd glibc-2.14.1

[root@chandao glibc-2.14.1]# mkdir build 



[root@chandao glibc-2.14.1]# cd build/

[root@chandao build]]]></description><category></category></item><item><title><![CDATA[java 泛型]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73603419</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73603419</guid><author>dream_ll</author><pubDate>Thu, 22 Jun 2017 15:38:38 +0800</pubDate><description><![CDATA[AyyayList a = new ArrayList();  
ArrayList b = new ArrayList();  
Class c1 = a.getClass();  
Class c2 = b.getClass();  
System.out.println(a == b); //true  上面程序的输出结果为true。所有反射的操作都是在运行时的，既然为true，就证明了编译]]></description><category></category></item><item><title><![CDATA[MySQL定时执行脚本(计划任务)命令实例]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73499750</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73499750</guid><author>dream_ll</author><pubDate>Tue, 20 Jun 2017 16:29:33 +0800</pubDate><description><![CDATA[查看event是否开启
show variables like '%sche%'; 
将事件计划开启

set global event_scheduler =1;
创建存储过程testCREATE PROCEDURE test () 
BEGIN 
update examinfo SET endtime = now() WHERE id = 14; 
END; 
创建event e_]]></description><category></category></item><item><title><![CDATA[mysql 查询大于多少天的数据]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73499581</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73499581</guid><author>dream_ll</author><pubDate>Tue, 20 Jun 2017 16:08:16 +0800</pubDate><description><![CDATA[SELECT * FROM 表名 WHERE DATE_ADD(createdate,INTERVAL 7 DAY) 上面语句查询7天之前的数据]]></description><category></category></item><item><title><![CDATA[Tomcat Neither the JAVA_HOME nor the JRE_HOME environment variable is defined]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73456781</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73456781</guid><author>dream_ll</author><pubDate>Mon, 19 Jun 2017 09:06:36 +0800</pubDate><description><![CDATA[一眼就能看出来是jdk的环境有问题，但是用了这么久的jdk一直都配置的好好的，怎么一到Tomcat上就这么矫情了。


最后查解决方案，原来是我的jdk从官网直接下载的，虽然我修改了java_home，但不太智能的tomcat仍然没有自动识别出java_home路径。

Linux解决方法：
编辑文件 /usr/local/tomcat/bin/catalina.sh (根据你自己的j]]></description><category></category></item><item><title><![CDATA[解决Linux下启动Tomcat遇到Neither the JAVA_HOME nor the JRE_HOME environment variable is defined]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73456777</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73456777</guid><author>dream_ll</author><pubDate>Mon, 19 Jun 2017 09:06:08 +0800</pubDate><description><![CDATA[找不到JAVA_HOME路径，需要做以下变更：

找到启动路径所在的目录：
cd bin/
vi catalina.sh


加入以下信息：
export  JAVA_HOME=/home/gongzi/http/jdk1.6.0_26
export  JRE_HOME=/home/gongzi/http/jdk1.6.0_26/jre]]></description><category></category></item><item><title><![CDATA[linux报错之--->export `=' not a valid identifier的一般原因]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73456774</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73456774</guid><author>dream_ll</author><pubDate>Mon, 19 Jun 2017 09:05:37 +0800</pubDate><description><![CDATA[export `=' not a valid identifier的一般原因  


原因就是你修改的 /etc/profile 文件里
你加过空格


我的代码如下：
export JAVA_HOME = /usr/java/jdk1.7.0_75
export PATH = $JAVA_HOME/bin:$PATH
export CLASSPATH = .:$JAVA_HO]]></description><category></category></item><item><title><![CDATA[MySQL修改root密码]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73456759</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73456759</guid><author>dream_ll</author><pubDate>Mon, 19 Jun 2017 09:04:04 +0800</pubDate><description><![CDATA[用UPDATE直接编辑user表

　　mysql -u root

　　mysql> use mysql;

　　mysql> UPDATE user SET Password = PASSWORD('newpass') WHERE user = 'root';

　　mysql> FLUSH PRIVILEGES;]]></description><category></category></item><item><title><![CDATA[LINUX重启MYSQL的命令]]></title><link>https://blog.youkuaiyun.com/dream_ll/article/details/73456752</link><guid>https://blog.youkuaiyun.com/dream_ll/article/details/73456752</guid><author>dream_ll</author><pubDate>Mon, 19 Jun 2017 09:02:37 +0800</pubDate><description><![CDATA[一、启动方式

1、使用 service 启动：service mysqld start

2、使用 mysqld 脚本启动：/etc/inint.d/mysqld start

3、使用 safe_mysqld 启动：safe_mysqld&

二、停止

1、使用 service 启动：service mysqld stop

2、使用 mysqld 脚本启动：/etc]]></description><category></category></item></channel></rss>