<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[whh]]></title><description><![CDATA[不去做就永远不会成功，一直向前走会达到你想不到的高度。]]></description><link>https://blog.youkuaiyun.com/u012204535</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; u012204535]]></copyright><item><title><![CDATA[linux7.4安装python3.8.3]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/106747921</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/106747921</guid><author>u012204535</author><pubDate>Sun, 14 Jun 2020 16:52:57 +0800</pubDate><description><![CDATA[阿里云Linux7.4安装python3.8.3
下载python3
wget https://www.python.org/ftp/python/3.8.3/Python-3.8.3.tgz

解压python压缩包更名python3，路径/usr/local/python3.8
配置、编译、安装
./configure --prefix=/usr/local/python3.8
make &amp;&amp; make install

报错了，缺依赖。[不处理也行，会缺少pip]
yum -y ins]]></description><category></category></item><item><title><![CDATA[时间段合并去重]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/105797102</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/105797102</guid><author>u012204535</author><pubDate>Mon, 27 Apr 2020 18:49:54 +0800</pubDate><description><![CDATA[原时间段：08:00-10:00,17:00-18:00,09:00-13:00,12:00-15:00,17:00-18:00,09:00-13:00
处理后：08:00-15:00,17:00-18:00
	public static void main(String[] args) {
        String str = "08:00-10:00,17:00-18:00,09:00-1...]]></description><category></category></item><item><title><![CDATA[Linux安装MongoDB]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/105433293</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/105433293</guid><author>u012204535</author><pubDate>Fri, 10 Apr 2020 14:42:11 +0800</pubDate><description><![CDATA[Linux on Red Hat 安装MongoDB
准备yum环境，/etc/yum.repos.d/目录下创建mongodb-org-4.2.repo文件，内容如下
[mongodb-org-4.2]
name=MongoDB Repository
baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/4....]]></description><category></category></item><item><title><![CDATA[Linux下安装zookeeper，解决遇到的问题]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/104040780</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/104040780</guid><author>u012204535</author><pubDate>Sun, 19 Jan 2020 15:27:43 +0800</pubDate><description><![CDATA[本文使用：zookeeper-3.5.6
官网zk下载：https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.5.6/
1.linux下载zk包
wget https://mirrors.tuna.tsinghua.edu.cn/apache/zookeeper/zookeeper-3.5.6/apache-zookee...]]></description><category></category></item><item><title><![CDATA[解决mac启动SpringBoot项目速度慢问题]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/94774984</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/94774984</guid><author>u012204535</author><pubDate>Fri, 05 Jul 2019 22:45:35 +0800</pubDate><description><![CDATA[mac：/private/tec/hosts
原始内容
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1             localhost
255...]]></description><category></category></item><item><title><![CDATA[Tomcat version 7.0 only supports J2EE 1.2, 1.3, 1.4, and Java EE 5 and 6 Web]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/90633165</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/90633165</guid><author>u012204535</author><pubDate>Tue, 28 May 2019 09:40:59 +0800</pubDate><description><![CDATA[eclipse创建Servers时出现以下提示：

当前选择：Tomcat7
版本过低，更换Tomcat8.5 解决。
有博文是该参数，见下文（该方案未实操）：
在eclipse的workspace里面找到该项目。
依次进入：.settings-&gt;org.eclipse.wst.common.project.facet.core.xml。
打开文件后，将下面的版本改低一点。


...]]></description><category></category></item><item><title><![CDATA[笔记：MyBatis+Oracle|的like用法]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/84283726</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/84283726</guid><author>u012204535</author><pubDate>Tue, 20 Nov 2018 09:48:19 +0800</pubDate><description><![CDATA[MyBatis+Oracle的like用法
field_name like '%'||#{field_name}||'%'

MyBatis+MySQL的like用法
field_name like concat('%',#{field_name},'%')

field_name为String类型

]]></description><category></category></item><item><title><![CDATA[笔记：SpringMVC - 406(Not Acceptable)]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/84111951</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/84111951</guid><author>u012204535</author><pubDate>Thu, 15 Nov 2018 22:20:24 +0800</pubDate><description><![CDATA[使用@ResponseBody返回json格式数据，因缺少依赖的jar包

添加依赖解决
&amp;lt;dependency&amp;gt;
  &amp;lt;groupId&amp;gt;com.fasterxml.jackson.core&amp;lt;/groupId&amp;gt;
  &amp;lt;artifactId&amp;gt;jackson-databind&amp;lt;/artifactId&amp;gt;
  &amp;lt;version&amp;gt;2.7...]]></description><category></category></item><item><title><![CDATA[笔记：layui中调用自定义函数]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/84111218</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/84111218</guid><author>u012204535</author><pubDate>Thu, 15 Nov 2018 21:22:48 +0800</pubDate><description><![CDATA[如何在layui中调用自定义函数
layui.use(['layer', 'form'], function(){
  var layer = layui.layer
  ,form = layui.form;

  function functName(){}

});

调用functName().报错：未定义
改为：
layui.use(['layer', 'form'], function...]]></description><category></category></item><item><title><![CDATA[笔记：Mybatis：Reader entry: ����]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/84106760</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/84106760</guid><author>u012204535</author><pubDate>Thu, 15 Nov 2018 16:37:58 +0800</pubDate><description><![CDATA[Spring+MyBatis项目启动乱码
...
Reader entry: ����
...


原因：
MyBatis.jar源码org.apache.ibatis.io.DefaultVFS中的InputStreamReader没有传第二个参数导致

mybatis-config.xml中
&amp;lt;typeAliases&amp;gt;
  &amp;lt;typeAlias type=&quot;com.xxx.x...]]></description><category></category></item><item><title><![CDATA[笔记：Oracle报错：ORA-22858: invalid alteration of datatype]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/84067819</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/84067819</guid><author>u012204535</author><pubDate>Wed, 14 Nov 2018 15:46:02 +0800</pubDate><description><![CDATA[Oracle数据库  VARCHAR2转CLOB报错：
ALTER TABLE TABLE_NAME
MODIFY ( &quot;FIELD&quot; CLOB ) ;


ORA-22858: oracle不允某些类型的字段修改。
具体就是不可以将字段类型修改为：
	object、REF、nested table、VARRAY、 CLOB、BLOB

解决办法，重建表，用clob字段;
新建clob字段进行替换...]]></description><category></category></item><item><title><![CDATA[笔记：The matching wildcard is strict, but no declaration can be found for element 'task:annotation-dri]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83825505</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83825505</guid><author>u012204535</author><pubDate>Wed, 07 Nov 2018 15:53:04 +0800</pubDate><description><![CDATA[启动Spring项目报错：
2018-11-07 15:46:18
[ERROR]-[Thread: localhost-startStop-1]-[org.springframework.web.context.ContextLoader.initWebApplicationContext()]: Context initialization failed
org.springframework...]]></description><category></category></item><item><title><![CDATA[笔记：@Scheduled注解的使用]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83825346</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83825346</guid><author>u012204535</author><pubDate>Wed, 07 Nov 2018 15:47:12 +0800</pubDate><description><![CDATA[@Scheduled注解的使用
1.配置.xml配置文件添加
&amp;lt;beans 
	xmlns:task=&quot;http://www.springframework.org/schema/task&quot;
	
	xsi:schemaLocation=&quot;http://www.springframework.org/schema/task
	http://www.springframework.org/sch...]]></description><category></category></item><item><title><![CDATA[笔记：Unsupported major.minor version 52.0]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83718157</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83718157</guid><author>u012204535</author><pubDate>Sun, 04 Nov 2018 18:05:10 +0800</pubDate><description><![CDATA[Linux下启动Tomcat报错：
Unsupported major.minor version 52.0
.....

原因：
Linux使用jdk1.7
本地代码jdk1.8打包
升级Linux至1.8
或者
本地改为1.7重新打包


]]></description><category></category></item><item><title><![CDATA[笔记：项目与tomcat中servlet-api冲突解决]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83713903</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83713903</guid><author>u012204535</author><pubDate>Sun, 04 Nov 2018 10:41:30 +0800</pubDate><description><![CDATA[Maven项目中需要servlet-api，tomcat中也有servlet-api包，结果冲突了。
解决办法：
添加：&amp;lt;scope&amp;gt;provided&amp;lt;/scope&amp;gt;

添加后如下：
&amp;lt;dependency&amp;gt;
	&amp;lt;groupId&amp;gt;javax.servlet&amp;lt;/groupId&amp;gt;
	&amp;lt;artifactId&amp;gt;javax.servle...]]></description><category></category></item><item><title><![CDATA[笔记：Java实现三个线程A B C，BC线程执行完再执行A线]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83549236</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83549236</guid><author>u012204535</author><pubDate>Tue, 30 Oct 2018 21:26:48 +0800</pubDate><description><![CDATA[final Lock lc = new ReentrantLock();

.. run() {
 lc.lock();
...
lc.unlock();
}
可能打开方式不对吧,没实现！

改用join() 可以实现(BC与A以单线程模式执行)，代码如下：
package com.w.thread;

import java.util.concurrent.locks.Lock;
import ...]]></description><category></category></item><item><title><![CDATA[笔记：MyBatis中$与#的区别]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83548002</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83548002</guid><author>u012204535</author><pubDate>Tue, 30 Oct 2018 20:13:42 +0800</pubDate><description><![CDATA[首先MyBatis中 $与#都是动态传参
1.# 将传入的数据都当成一个字符串，会对自动传入的数据加一个双引号
2.$ 将传入的数据直接显示生成在sql中
3.# 占位符号，能够很大程度防止sql注入「语句的拼接」
4.$ sql拼接符号，无法防止Sql注入
5.如果使用在order by中就需要使用 $
6.#{}编译好SQL语句再取值
7.${}取值以后再去编译SQL语句
8.$方式一般用于传...]]></description><category></category></item><item><title><![CDATA[笔记：Cannot enable lazy loading because CGLIB is not available. Add CGLIB to your classpath]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83477538</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83477538</guid><author>u012204535</author><pubDate>Sun, 28 Oct 2018 19:55:07 +0800</pubDate><description><![CDATA[Springmvc报错：Cannot enable lazy loading because CGLIB is not available. Add CGLIB to your classpath

解决办法：缺少CGLIB包，pom添加：
&amp;lt;dependency&amp;gt;
	&amp;lt;groupId&amp;gt;cglib&amp;lt;/groupId&amp;gt;
	&amp;lt;artifactId&amp;gt;cgl...]]></description><category></category></item><item><title><![CDATA[笔记：Maven启动报错 - No goals have been specified for this build.You must specify a valid lifecycle phase]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83474468</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83474468</guid><author>u012204535</author><pubDate>Sun, 28 Oct 2018 14:29:48 +0800</pubDate><description><![CDATA[Maven启动报错：
[ERROR] No goals have been specified for this build. You must specify a valid lifecycle phase or a goal in the format &amp;lt;plugin-prefix&amp;gt;:&amp;lt;goal&amp;gt; or &amp;lt;plugin-group-id&amp;gt;:&amp;lt;plugi...]]></description><category></category></item><item><title><![CDATA[笔记：-bash: jstack: command not found]]></title><link>https://blog.youkuaiyun.com/u012204535/article/details/83309240</link><guid>https://blog.youkuaiyun.com/u012204535/article/details/83309240</guid><author>u012204535</author><pubDate>Tue, 23 Oct 2018 16:42:51 +0800</pubDate><description><![CDATA[遇到-bash: jstack: command not found稳住，别慌
找到java安装目录cd .../bin/再执行
./jstack ...

示例：


]]></description><category></category></item></channel></rss>