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<a class="article-title" href="/2022/02/06/%E5%9F%BA%E4%BA%8ESpringboot%E8%87%AA%E5%AE%9A%E4%B9%89starter%E5%9F%BA%E7%A1%80%E6%A1%88%E4%BE%8B/">基于Springboot自定义starter基础案例</a>
</h1>
<a href="/2022/02/06/%E5%9F%BA%E4%BA%8ESpringboot%E8%87%AA%E5%AE%9A%E4%B9%89starter%E5%9F%BA%E7%A1%80%E6%A1%88%E4%BE%8B/" class="archive-article-date">
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</a>
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<blockquote>
<p> 概念：简单的stater案例实现，通过拦截自定义注解标识的方法，实现aop方法增强。</p>
<p> 自定义stater功能：计算拦截方法耗时，打印日志记录。</p>
</blockquote>
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<a href="javascript:void(0)" class="js-tag article-tag-list-link color2">spring</a>
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<a class="article-title" href="/2021/10/30/Cobra%20%E7%AE%80%E5%8D%95%E4%BD%BF%E7%94%A8%E5%85%A5%E9%97%A8/">Cobra 简单使用入门</a>
</h1>
<a href="/2021/10/30/Cobra%20%E7%AE%80%E5%8D%95%E4%BD%BF%E7%94%A8%E5%85%A5%E9%97%A8/" class="archive-article-date">
<time datetime="2021-10-30T01:03:33.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2021-10-30</time>
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<h2 id="Cobra-简单使用入门"><a href="#Cobra-简单使用入门" class="headerlink" title="Cobra 简单使用入门"></a>Cobra 简单使用入门</h2><blockquote>
<p>简单说两句：这是非常肤浅的入门案例讲解，旨在说明cobra如何使用，以及可以尝试的不同玩法。</p>
</blockquote>
<h3 id="1-cobra基础概念"><a href="#1-cobra基础概念" class="headerlink" title="1.cobra基础概念"></a>1.cobra基础概念</h3><blockquote>
<p>cobra简介：Cobra 是一个 Golang 包，它提供了简单的接口来创建命令行程序。同时，Cobra 也是一个应用程序，用来生成应用框架，从而开发以 Cobra 为基础的应用</p>
</blockquote>
<h4 id="主要概念："><a href="#主要概念：" class="headerlink" title="主要概念："></a>主要概念：</h4><p> cobra 中有个重要的概念，分别是 commands、arguments 和 flags。其中 commands 代表行为，arguments 就是命令行参数(或者称为位置参数)，flags 代表对行为的改变(也就是我们常说的命令行选项)。执行命令行程序时的一般格式为：<code>APPNAME COMMAND ARG --FLAG</code></p>
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<article id="post-golang邮箱发送验证简单实现" class="article article-type-post article-index" itemscope itemprop="blogPost">
<div class="article-inner">
<header class="article-header">
<h1 itemprop="name">
<a class="article-title" href="/2021/10/20/golang%E9%82%AE%E7%AE%B1%E5%8F%91%E9%80%81%E9%AA%8C%E8%AF%81%E7%AE%80%E5%8D%95%E5%AE%9E%E7%8E%B0/">go邮箱发送验证简单实现</a>
</h1>
<a href="/2021/10/20/golang%E9%82%AE%E7%AE%B1%E5%8F%91%E9%80%81%E9%AA%8C%E8%AF%81%E7%AE%80%E5%8D%95%E5%AE%9E%E7%8E%B0/" class="archive-article-date">
<time datetime="2021-10-20T08:05:31.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2021-10-20</time>
</a>
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<blockquote>
<p>此功能依赖于第三方库：</p>
<ol>
<li>github.com/afocus/captcha 验证码工具库</li>
<li>github.com/jordan-wright/email 邮件工具库</li>
</ol>
</blockquote>
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<a class="article-title" href="/2021/10/16/Mycat%20%E6%95%B0%E6%8D%AE%E5%BA%93%E4%B8%AD%E9%97%B4%E4%BB%B6%E5%BA%94%E7%94%A8/">mycat简单入门</a>
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<a href="/2021/10/16/Mycat%20%E6%95%B0%E6%8D%AE%E5%BA%93%E4%B8%AD%E9%97%B4%E4%BB%B6%E5%BA%94%E7%94%A8/" class="archive-article-date">
<time datetime="2021-10-16T09:21:33.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2021-10-16</time>
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<h3 id="mycat简单入门"><a href="#mycat简单入门" class="headerlink" title="mycat简单入门"></a>mycat简单入门</h3><blockquote>
<p>简介：通过一个demo来演示mysql如何主从复制以及利用mycat数据库中间件实现读写分离</p>
</blockquote>
<h4 id="1-mycat简单说两句"><a href="#1-mycat简单说两句" class="headerlink" title="1. mycat简单说两句"></a>1. mycat简单说两句</h4><blockquote>
<p> Mycat简单说来就是一个数据库中间件，当业务发展到单个数据库无法支撑IO以及数据量庞大到单机无法储存时，考虑分库分表成为一种选择。</p>
<p> Mycat模拟mysql协议，启动该服务，通过xml配置，表面上用户操作mycat就跟操作MySQL一样，后面的处理逻辑交给mycat自己处理。</p>
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<article id="post-JavaWebMagic 爬虫框架" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2021/07/05/JavaWebMagic%20%E7%88%AC%E8%99%AB%E6%A1%86%E6%9E%B6/">今天开始写java爬虫</a>
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<h2 id="JavaWebMagic爬虫框架"><a href="#JavaWebMagic爬虫框架" class="headerlink" title="JavaWebMagic爬虫框架"></a>JavaWebMagic爬虫框架</h2><blockquote>
<p>简介：webmagick框架是一个java实现的爬虫框架，底层由httpclient和jsoup实现。</p>
<p>由于作者很久未继续更新，学习入门可以，实际真想爬点什么…你懂的，很难爬。</p>
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<h3 id="一、基本概念"><a href="#一、基本概念" class="headerlink" title="一、基本概念"></a>一、基本概念</h3><h4 id="1-组件构成："><a href="#1-组件构成：" class="headerlink" title="1.组件构成："></a>1.组件构成：</h4><ul>
<li><p>downloader：Downloader负责从互联网上下载页面，以便后续处理。WebMagic默认使用了<a target="_blank" rel="noopener" href="http://hc.apache.org/index.html">Apache HttpClient</a>作为下载工具。</p>
</li>
<li><p>pageprocessor： PageProcessor负责解析页面，抽取有用信息，以及发现新的链接。WebMagic使用<a target="_blank" rel="noopener" href="http://jsoup.org/">Jsoup</a>作为HTML解析工具，并基于其开发了解析XPath的工具<a target="_blank" rel="noopener" href="https://github.com/code4craft/xsoup">Xsoup</a>。（用户需定制逻辑）</p>
</li>
<li><p>scheculer：Scheduler负责管理待抓取的URL，以及一些去重的工作。WebMagic默认提供了JDK的内存队列来管理URL，并用集合来进行去重。也支持使用Redis进行分布式管理。</p>
<blockquote>
<p> 除非项目有一些特殊的分布式需求，否则无需自己定制Scheduler。</p>
</blockquote>
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<li><p>pipeline：Pipeline负责抽取结果的处理，包括计算、持久化到文件、数据库等。WebMagic默认提供了“输出到控制台”和“保存到文件”两种结果处理方案（如果需要持久化到数据库，需重写方法）</p>
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<h4 id="2-框架架构图："><a href="#2-框架架构图：" class="headerlink" title="2.框架架构图："></a>2.框架架构图：</h4><p><img src="http://code4craft.github.io/images/posts/webmagic.png" alt="image"></p>
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<article id="post-SFTPGo服务器部署入门" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a href="/2021/05/05/SFTPGo%E6%9C%8D%E5%8A%A1%E5%99%A8%E9%83%A8%E7%BD%B2%E5%85%A5%E9%97%A8/" class="archive-article-date">
<time datetime="2021-05-05T01:32:22.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2021-05-05</time>
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<h3 id="一、关于SFTPGo一点自得"><a href="#一、关于SFTPGo一点自得" class="headerlink" title="一、关于SFTPGo一点自得"></a>一、关于SFTPGo一点自得</h3><h4 id="1-这玩意是什么？"><a href="#1-这玩意是什么？" class="headerlink" title="1. 这玩意是什么？"></a>1. 这玩意是什么？</h4><blockquote>
<p>一款功能齐全且高度可配置的SFTP服务器，带个Go是因为drakkan用Golang语言编写的。</p>
<p>支持虚拟账户、虚拟目录、不需要文件传输的标记文件、ftp/sftp/WebDAV协议支持，更好的支持文件传输上传下载</p>
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<h4 id="2-为什么写这篇博客"><a href="#2-为什么写这篇博客" class="headerlink" title="2.为什么写这篇博客"></a>2.为什么写这篇博客</h4><blockquote>
<p>因为中文文档实在太少了，所幸github开发者很友好，有问题能善意的给出解答。</p>
<p>在此也想帮助其他有需要的朋友，闲话到此咱们开始吧。</p>
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<article id="post-cucumber单元测试入门" class="article article-type-post article-index" itemscope itemprop="blogPost">
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<a class="article-title" href="/2021/04/05/cucumber%E5%8D%95%E5%85%83%E6%B5%8B%E8%AF%95%E5%85%A5%E9%97%A8/">今天开始写单元测试cucumber</a>
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<a href="/2021/04/05/cucumber%E5%8D%95%E5%85%83%E6%B5%8B%E8%AF%95%E5%85%A5%E9%97%A8/" class="archive-article-date">
<time datetime="2021-04-05T01:11:12.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2021-04-05</time>
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<h2 id="cucumber小黄瓜单元测试简介"><a href="#cucumber小黄瓜单元测试简介" class="headerlink" title="cucumber小黄瓜单元测试简介"></a>cucumber小黄瓜单元测试简介</h2><h3 id="什么是单元测试"><a href="#什么是单元测试" class="headerlink" title="什么是单元测试"></a>什么是单元测试</h3><p>即是对最小的软件设计单元的验证工作，测试对象通常是一个对象或一个函数。</p>
<h5 id="集成测试-Integration-tests"><a href="#集成测试-Integration-tests" class="headerlink" title="集成测试(Integration tests):"></a><strong>集成测试(Integration tests):</strong></h5><p> 一组需要运行多个测试进行验证的过程，通常是为了验证各个程序单元一起工作时的结果是否符合预期。</p>
<h5 id="验收测试-Acceptance-tests-功能测试-Functional-tests"><a href="#验收测试-Acceptance-tests-功能测试-Functional-tests" class="headerlink" title="验收测试(Acceptance tests)/功能测试(Functional tests):"></a><strong>验收测试(Acceptance tests)/功能测试(Functional tests):</strong></h5><p> 从用户视角对整个系统进行的测试，判断系统是否满足用户的验收条件。</p>
<blockquote>
<p><strong>TDD(Test-Driven Development)</strong>:一个开发测试代码和业务代码的工作流程(测试驱动开发)，基于这个流程你可以写出具有极高测试覆盖率（通常接近90%）的代码</p>
<p>BDD(Behavior-Driven Development)：即行为驱动开发，针对行为进行测试，我们不考虑如何实现代码，取而代之的是我们花时间考虑场景是什么，会有什么行为，针对行为代码应该有什么反应。</p>
</blockquote>
<h4 id="什么是小黄瓜（BDD行为驱动开发）"><a href="#什么是小黄瓜（BDD行为驱动开发）" class="headerlink" title="什么是小黄瓜（BDD行为驱动开发）"></a>什么是小黄瓜（BDD行为驱动开发）</h4><p>小黄瓜cucumber即是一款测试工具，可用于大多数主流编程语言。没有任何疑问的也支持java语言。</p>
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<a class="article-title" href="/2020/09/01/MicroService(%E5%BE%AE%E6%9C%8D%E5%8A%A1)%E6%9E%B6%E6%9E%84/">springcloud微服务架构入门</a>
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<a href="/2020/09/01/MicroService(%E5%BE%AE%E6%9C%8D%E5%8A%A1)%E6%9E%B6%E6%9E%84/" class="archive-article-date">
<time datetime="2020-09-01T12:05:15.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2020-09-01</time>
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<h2 id="为什么需要spring-cloud"><a href="#为什么需要spring-cloud" class="headerlink" title="为什么需要spring cloud"></a>为什么需要spring cloud</h2><h2 id="Monolith-单体应用-架构"><a href="#Monolith-单体应用-架构" class="headerlink" title="Monolith(单体应用)架构"></a>Monolith(单体应用)架构</h2><h3 id="什么是单体应用"><a href="#什么是单体应用" class="headerlink" title="什么是单体应用"></a>什么是单体应用</h3><p> 回想一下我们所开发的服务是什么样子的。通常情况下，这个服务所对应的代码由多个项目(idea)所组成，各个项目会根据自身所提供功能的不同具有一个明确的边界。在编译时，这些项目将被打包成为一个个JAR包，并最终合并在一起形成一个WAR包。接下来，我们需要将该WAR包上传到Web容器中，解压该WAR包，并重新启动服务器。在执行完这一系列操作之后，我们对服务的编译及部署就已经完成了。这种将所有的代码及功能都包含在一个WAR包中的项目组织方式被称为Monolith。</p>
<p> 最终部署的时候只有一份war包,其他的以jar包的方式依赖来.</p>
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<a class="article-title" href="/2019/11/22/Spring/">Spring从入门到入土</a>
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<h2 id="Spring简介"><a href="#Spring简介" class="headerlink" title="Spring简介"></a>Spring简介</h2><p> Spring是一个轻量级Java开发框架，由Rod Johnson创建，目的是为了解决企业级应用开发的业务逻辑层和其他各层的耦合问题。它是一个JavaSE/JavaEE分层的full-stack（一站式）轻量级开源框架，为开发Java应用程序提供全面的基础架构支持。</p>
<p> Spring负责基础架构，因此Java开发者可以专注于应用程序的开发。</p>
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<a class="article-title" href="/2017/09/06/%E6%95%B0%E6%8D%AE%E5%BA%93DCL%E6%9D%83%E9%99%90%E7%AE%A1%E7%90%86/">数据库DCL权限了解</a>
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<a href="/2017/09/06/%E6%95%B0%E6%8D%AE%E5%BA%93DCL%E6%9D%83%E9%99%90%E7%AE%A1%E7%90%86/" class="archive-article-date">
<time datetime="2017-09-06T08:05:15.000Z" itemprop="datePublished"><i class="icon-calendar icon"></i>2017-09-06</time>
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<h3 id="DCL-管理用户"><a href="#DCL-管理用户" class="headerlink" title="DCL 管理用户"></a>DCL 管理用户</h3><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br></pre></td><td class="code"><pre><span class="line">* 管理用户（授权）（主机名 ： localhost 或者 % 代表任意主机 ）</span><br><span class="line"> 1. 管理用户：</span><br><span class="line"> * 添加用户：create user '用户名'@'主机名 ' inentified by '密码'</span><br><span class="line"> * 删除用户： drop user '用户名'@'主机名 '</span><br><span class="line"> * 修改用户密码：</span><br><span class="line"> 1. 修改密码的两种语法：</span><br><span class="line"> * UPDATE USER SET PASSWORD = PASSWORD('新密码') WHERE USER = '用户名';</span><br><span class="line"> * SET PASSWORD FOR '用户名'@'主机名' = PASSWORD('新密码');</span><br><span class="line"> 2. 特殊情况：mysql中忘记了root用户的密码？</span><br><span class="line"> * cmd -- > net stop mysql 停止mysql服务（需要管理员运行该cmd）</span><br><span class="line"> * 使用无验证方式启动mysql服务： mysqld --skip-grant-tables</span><br><span class="line"> * 打开新的cmd窗口,直接输入mysql命令，敲回车。就可以登录成功</span><br><span class="line"> * use mysql;</span><br><span class="line"> * update user set password = password('你的新密码') where user = 'root';</span><br><span class="line"> * 关闭两个窗口</span><br><span class="line"> * 打开任务管理器，手动结束mysqld.exe 的进程</span><br><span class="line"> * 启动mysql服务</span><br><span class="line"> * 使用新密码登录</span><br><span class="line"> * 查询用户名：</span><br><span class="line"> 1. 切换到mysql数据库 <span class="keyword">use</span> mysql</span><br><span class="line"> <span class="number">2.</span> 查询<span class="keyword">user</span>表 <span class="keyword">select</span> * <span class="keyword">from</span> <span class="keyword">user</span></span><br><span class="line"> <span class="number">3.</span> 注意：通配符 % 表示可以在任意主机使用用户登录数据库</span><br><span class="line"></span><br><span class="line"> <span class="number">2.</span> 授予/撤销权限：</span><br><span class="line"> * 授予权限：<span class="keyword">grant</span> 权限列表 <span class="keyword">on</span> 数据库名.表名 <span class="keyword">to</span> <span class="string">'用户名'</span>@<span class="string">'主机名'</span>;</span><br><span class="line"> * 撤销权限：revoke 权限列表 on 数据库名.表名 from '用户名'@'主机名';</span><br><span class="line"> * 查询权限：show grants for '用户名'@'主机名 ' </span><br><span class="line"> * 注意：通配符 all 代表所有权限 </span><br><span class="line"> *.* 所有库的所有表</span><br><span class="line"></span><br></pre></td></tr></table></figure>
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