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<div class="post-list post"><a class="post-card post" href="/posts/2024/3FA817D7/">
<article class="md-text"><h2 class="post-title">同步获取宽带公网ip的一个思路</h2><div class="excerpt"><p>家里的宽带是电信的。电信的宽带比联通或是移动的是贵一些，但有一个优点是可以比较简单的申请到公网ip。有了公网ip之后，我们就可以用来做一些有趣的事情，比如远程登录到家里的台式机，访问家里的黑群晖。
但需要注意的是，这个ip是不固定的，即重新拨号之后，...</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2024-04-02T08:38:42.000Z">2024-04-02</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>生活</span></span></div></article>
</a><a class="post-card post" href="/posts/2023/663E817F/">
<article class="md-text"><h2 class="post-title">百度地图切片方案</h2><div class="excerpt"><p>在使用arcgis js api 或是 openlayers 来进行百度地图切片加载的时候，由于百度地图采用的是私有、非标准的切片方案，不能像加载谷歌切片或是天地图切片一样，api原生支持、开箱即用，而是需要进行定制化的开发来实现切片的加载
定制化百度地图切片的加载策略，需要知道百度地图切片方案的切片起点(origin)、切片分辨率(resolutions)、切片范围(full extent)、切片正方向定义(x-axis positive direction 、y-axis positive direction)、切片尺寸(tile size)等。百度切片方案的以上信息，都与标准web mercator切片方案有着差异。我们知道，标准web mercator切片方案的切片起点为切片范围的左上角（top,left)，切片范围为[-180,-85,180,85]范围，切片x正方向由left到right列号递增，切片y正方向由top到bottom行号递增，切片尺寸为[256,256]大小。那百度地图是怎样的呢？</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2023-06-19T08:48:16.000Z">2023-06-19</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>gis</span></span></div></article>
</a><a class="post-card post" href="/posts/2022/B157EEA3/">
<article class="md-text"><h2 class="post-title">多线程设计模式简介</h2><div class="excerpt"><p>Single Threaded Execution模式所谓Single Threaded Execution模式，意思是“单一线程执行”。该模式用于设置限制，以确保同一时间只能让一个线程执行处理。
Single Threaded Execution模式中，存在着一种SharedResource角色。SharedResource角色是会被多个线程同时访问的类，类会包含多个方法。但这些方法主要分为如下的两类：
safeMethod：多个线程同时调用也不会发生问题的方法。
unsafeMethod：多个线程同时调用会发生问题，因此必须加以保护的方法。
</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2022-04-01T16:00:00.000Z">2022-04-02</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>java</span></span></div></article>
</a><a class="post-card post" href="/posts/2022/2E51C785/">
<article class="md-text"><h2 class="post-title">麻将和牌算法简介</h2><div class="excerpt"><p>日常生活中，我有一个非常浪费时间的爱好，那就是麻将。虽然没有经过系统的学习和训练，水平非常一般，但我还是乐此不疲。作为一个程序员，在打麻将之余，也总会不自觉地去思考麻将的和牌算法应该怎么去实现。今天就来谈一下我对这个问题的一些粗略想法。</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2022-03-30T04:48:17.000Z">2022-03-30</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>麻将</span></span></div></article>
</a><a class="post-card post" href="/posts/2020/43467A63/">
<article class="md-text"><h2 class="post-title">切片地图元信息配置说明</h2><div class="excerpt"><p>在使用openlayers等javascript库来加载互联网在线地图或是geoserver等发布的切片地图的时候，经常需要对地图服务的相关元数据进行配置，如size、origin、dpi、lods等。本文将对以上配置项进行详细的说明，并以天地图在线地图服务为例配合讲解。</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2020-10-11T16:00:00.000Z">2020-10-12</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>gis</span></span></div></article>
</a><a class="post-card post" href="/posts/2020/0BED1D48/">
<article class="md-text"><h2 class="post-title">扩展dubbo官网页面宽度的chrome插件</h2><div class="excerpt"><p>最近，我又一次的开始了对apache dubbo框架的学习。过去的一年里，陆陆续续的投入了一些时间在这个框架上面。无奈，工作的限制让我在日常中并不会用到这个框架，导致我对dubbo的掌握总是不太牢固。希望这一次可以在以往的基础上更进一步，对它的掌握更加彻底一些。
这几天，在浏览dubbo官方页面上的用户手册的时候，对页面的展示效果是越来越不满意。不满主要集中在，官方页面中的默认宽度实在是太小了，导致页面中的表格内容稍微多一些，表格底下就会出现一个大大的滚动条，展示效果如图所示。</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2020-06-20T16:00:00.000Z">2020-06-21</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>chrome</span></span></div></article>
</a><a class="post-card post" href="/posts/2020/385BA9A7/">
<article class="md-text"><h2 class="post-title">如何解码arcgis compressed geometry</h2><div class="excerpt"><p>简介arcgis compressed geometry 是一种编码过的线图形格式。线图形经过编码后，体积变小，可以高效的在网络中进行传输。
compressed geometry常用于arcgis网络数据集的路径查询和导航相关接口的返回结果中。
compressed geometry的格式为形如“+0+1+3+1+emjd+3j07m+3+0+0+1-3-1|+9og+0+lv4+0+lv4|+5rg+uq+r9+au+168”或是“+1m91-6fkfr+202tp+k+f+7+3+34+2d”的字符串。
组成线图形的点，其坐标格式除支持x和y坐标之外，同时也支持z和m坐标。</p></div><div class="meta cap"><span class="cap" id="post-meta"><svg style="margin-bottom:2px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M6.94 2c.416 0 .753.324.753.724v1.46c.668-.012 1.417-.012 2.26-.012h4.015c.842 0 1.591 0 2.259.013v-1.46c0-.4.337-.725.753-.725s.753.324.753.724V4.25c1.445.111 2.394.384 3.09 1.055c.698.67.982 1.582 1.097 2.972L22 9H2v-.724c.116-1.39.4-2.302 1.097-2.972c.697-.67 1.645-.944 3.09-1.055V2.724c0-.4.337-.724.753-.724"/><path fill="currentColor" d="M22 14v-2c0-.839-.004-2.335-.017-3H2.01c-.013.665-.01 2.161-.01 3v2c0 3.771 0 5.657 1.172 6.828C4.343 22 6.228 22 10 22h4c3.77 0 5.656 0 6.828-1.172C22 19.658 22 17.772 22 14" opacity=".5"/><path fill="currentColor" d="M18 17a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m-5 4a1 1 0 1 1-2 0a1 1 0 0 1 2 0m0-4a1 1 0 1 1-2 0a1 1 0 0 1 2 0"/></svg><time datetime="2020-03-27T16:00:00.000Z">2020-03-28</time></span><span class="cap breadcrumb"><svg style="margin-bottom:1px" xmlns="http://www.w3.org/2000/svg" width="32" height="32" viewBox="0 0 24 24"><path fill="currentColor" d="M2 6.95c0-.883 0-1.324.07-1.692A4 4 0 0 1 5.257 2.07C5.626 2 6.068 2 6.95 2c.386 0 .58 0 .766.017a4 4 0 0 1 2.18.904c.144.119.28.255.554.529L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .848.352C14.098 6 14.675 6 15.828 6h.374c2.632 0 3.949 0 4.804.77c.079.07.154.145.224.224c.77.855.77 2.172.77 4.804V14c0 3.771 0 5.657-1.172 6.828C19.657 22 17.771 22 14 22h-4c-3.771 0-5.657 0-6.828-1.172C2 19.657 2 17.771 2 14z" opacity=".5"/><path fill="currentColor" d="M20 6.238c0-.298-.005-.475-.025-.63a3 3 0 0 0-2.583-2.582C17.197 3 16.965 3 16.5 3H9.988c.116.104.247.234.462.45L11 4c.816.816 1.224 1.224 1.712 1.495a4 4 0 0 0 .849.352C14.098 6 14.675 6 15.829 6h.373c1.78 0 2.957 0 3.798.238"/><path fill="currentColor" fill-rule="evenodd" d="M12.25 10a.75.75 0 0 1 .75-.75h5a.75.75 0 0 1 0 1.5h-5a.75.75 0 0 1-.75-.75" clip-rule="evenodd"/></svg><span>gis</span></span></div></article>
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} else {
var refs = (doc.body || doc.getElementsByTagName("head")[0]).childNodes;
ref = refs[refs.length - 1];
}
var sheets = doc.styleSheets;
if (attributes) {
for (var attributeName in attributes) {
if (attributes.hasOwnProperty(attributeName)) {
ss.setAttribute(attributeName, attributes[attributeName]);
}
}
}
ss.rel = "stylesheet";
ss.href = href;
ss.media = "only x";
function ready(cb) {
if (doc.body) {
return cb();
}
setTimeout(function () {
ready(cb);
});
}
ready(function () {
ref.parentNode.insertBefore(ss, before ? ref : ref.nextSibling);
});
var onloadcssdefined = function (cb) {
var resolvedHref = ss.href;
var i = sheets.length;
while (i--) {
if (sheets[i].href === resolvedHref) {
return cb();
}
}
setTimeout(function () {
onloadcssdefined(cb);
});
};
function loadCB() {
if (ss.addEventListener) {
ss.removeEventListener("load", loadCB);
}
ss.media = media || "all";
}
if (ss.addEventListener) {
ss.addEventListener("load", loadCB);
}
ss.onloadcssdefined = onloadcssdefined;
onloadcssdefined(loadCB);
return ss;
},
js: (src, opt) => new Promise((resolve, reject) => {
var script = document.createElement('script');
if (src.startsWith('/')){
src = ctx.root + src.substring(1);
}
script.src = src;
if (opt) {
for (let key of Object.keys(opt)) {
script[key] = opt[key]
}
} else {
// 默认异步，如果需要同步，第二个参数传入 {} 即可
script.async = true
}
script.onerror = reject
script.onload = script.onreadystatechange = function() {
const loadState = this.readyState
if (loadState && loadState !== 'loaded' && loadState !== 'complete') return
script.onload = script.onreadystatechange = null
resolve()
}
document.head.appendChild(script)
}),
jq: (fn) => {
if (typeof jQuery === 'undefined') {
utils.js(deps.jquery).then(fn)
} else {
fn()
}
},
onLoading: (el) => {
if (el) {
$(el).append('<div class="loading-wrap"><svg xmlns="http://www.w3.org/2000/svg" width="2em" height="2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><g fill="none" stroke="currentColor" stroke-linecap="round" stroke-width="2"><path stroke-dasharray="60" stroke-dashoffset="60" stroke-opacity=".3" d="M12 3C16.9706 3 21 7.02944 21 12C21 16.9706 16.9706 21 12 21C7.02944 21 3 16.9706 3 12C3 7.02944 7.02944 3 12 3Z"><animate fill="freeze" attributeName="stroke-dashoffset" dur="1.3s" values="60;0"/></path><path stroke-dasharray="15" stroke-dashoffset="15" d="M12 3C16.9706 3 21 7.02944 21 12"><animate fill="freeze" attributeName="stroke-dashoffset" dur="0.3s" values="15;0"/><animateTransform attributeName="transform" dur="1.5s" repeatCount="indefinite" type="rotate" values="0 12 12;360 12 12"/></path></g></svg></div>');
}
},
onLoadSuccess: (el) => {
if (el) {
$(el).find('.loading-wrap').remove();
}
},
onLoadFailure: (el) => {
if (el) {
$(el).find('.loading-wrap svg').remove();
$(el).find('.loading-wrap').append('<svg xmlns="http://www.w3.org/2000/svg" width="2em" height="2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24"><g fill="none" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2"><path stroke-dasharray="60" stroke-dashoffset="60" d="M12 3L21 20H3L12 3Z"><animate fill="freeze" attributeName="stroke-dashoffset" dur="0.5s" values="60;0"/></path><path stroke-dasharray="6" stroke-dashoffset="6" d="M12 10V14"><animate fill="freeze" attributeName="stroke-dashoffset" begin="0.6s" dur="0.2s" values="6;0"/></path></g><circle cx="12" cy="17" r="1" fill="currentColor" fill-opacity="0"><animate fill="freeze" attributeName="fill-opacity" begin="0.8s" dur="0.4s" values="0;1"/></circle></svg>');
$(el).find('.loading-wrap').addClass('error');
}
},
request: (el, url, callback, onFailure) => {
let retryTimes = 3;
utils.onLoading(el);
function req() {
return new Promise((resolve, reject) => {
let status = 0; // 0 等待 1 完成 2 超时
let timer = setTimeout(() => {
if (status === 0) {
status = 2;
timer = null;
reject('请求超时');
if (retryTimes == 0) {
onFailure();
}
}
}, 5000);
fetch(url).then(function(response) {
if (status !== 2) {
clearTimeout(timer);
resolve(response);
timer = null;
status = 1;
}
if (response.ok) {
return response.json();
}
throw new Error('Network response was not ok.');
}).then(function(data) {
retryTimes = 0;
utils.onLoadSuccess(el);
callback(data);
}).catch(function(error) {
if (retryTimes > 0) {
retryTimes -= 1;
setTimeout(() => {
req();
}, 5000);
} else {
utils.onLoadFailure(el);
onFailure();
}
});
});
}
req();
},
};
</script>
<script>
const sidebar = {
leftbar: () => {
if (l_body) {
l_body.toggleAttribute('leftbar');
l_body.removeAttribute('rightbar');
}
},
rightbar: () => {
if (l_body) {
l_body.toggleAttribute('rightbar');
l_body.removeAttribute('leftbar');
}
},
dismiss: () => {
if (l_body) {
l_body.removeAttribute('leftbar');
l_body.removeAttribute('rightbar');
}
},
toggleTOC: () => {
document.querySelector('#data-toc').classList.toggle('collapse');
}
}
</script>
<!-- required -->
<script src="/js/main.js?v=1.27.0" async></script>
<!-- optional -->
<script defer>
window.addEventListener('DOMContentLoaded', (event) => {
ctx.services = Object.assign({}, JSON.parse(`{"mdrender":{"js":"/js/services/mdrender.js"},"siteinfo":{"js":"/js/services/siteinfo.js","api":null},"ghinfo":{"js":"/js/services/ghinfo.js"},"sites":{"js":"/js/services/sites.js"},"friends":{"js":"/js/services/friends.js"},"timeline":{"js":"/js/services/timeline.js"},"fcircle":{"js":"/js/services/fcircle.js"},"weibo":{"js":"/js/services/weibo.js"},"memos":{"js":"/js/services/memos.js"}}`));
for (let id of Object.keys(ctx.services)) {
const js = ctx.services[id].js;
if (id == 'siteinfo') {
ctx.cardlinks = document.querySelectorAll('a.link-card[cardlink]');
if (ctx.cardlinks?.length > 0) {
utils.js(js, { defer: true }).then(function () {
setCardLink(ctx.cardlinks);
});
}
} else {
const els = document.getElementsByClassName(`ds-${id}`);
if (els?.length > 0) {
utils.jq(() => {
if (id == 'timeline' || 'memos' || 'marked') {
utils.js(deps.marked).then(function () {
utils.js(js, { defer: true });
});
} else {
utils.js(js, { defer: true });
}
});
}
}
}
});
</script>
<script>
window.addEventListener('DOMContentLoaded', (event) => {
ctx.search = {
path: `/search.json`,
}
utils.js('/js/search/local-search.js', { defer: true });
});
</script><script>
window.FPConfig = {
delay: 0,
ignoreKeywords: [],
maxRPS: 5,
hoverDelay: 25
};
</script>
<script defer src="https://cdn.bootcdn.net/ajax/libs/flying-pages/2.1.2/flying-pages.min.js"></script><script defer src="https://cdn.bootcdn.net/ajax/libs/vanilla-lazyload/17.8.4/lazyload.min.js"></script>
<script>
// https://www.npmjs.com/package/vanilla-lazyload
// Set the options globally
// to make LazyLoad self-initialize
window.lazyLoadOptions = {
elements_selector: ".lazy",
};
// Listen to the initialization event
// and get the instance of LazyLoad
window.addEventListener(
"LazyLoad::Initialized",
function (event) {
window.lazyLoadInstance = event.detail.instance;
},
false
);
document.addEventListener('DOMContentLoaded', function () {
window.lazyLoadInstance?.update();
});
</script><script>
ctx.fancybox = {
selector: `.timenode p>img`,
css: `https://cdn.bootcdn.net/ajax/libs/fancyapps-ui/5.0.22/fancybox/fancybox.min.css`,
js: `https://cdn.bootcdn.net/ajax/libs/fancyapps-ui/5.0.22/fancybox/fancybox.umd.min.js`
};
var selector = '[data-fancybox]:not(.error)';
if (ctx.fancybox.selector) {
selector += `, ${ctx.fancybox.selector}`
}
var needFancybox = document.querySelectorAll(selector).length !== 0;
if (!needFancybox) {
const els = document.getElementsByClassName('ds-memos');
if (els != undefined && els.length > 0) {
needFancybox = true;
}
}
if (needFancybox) {
utils.css(ctx.fancybox.css);
utils.js(ctx.fancybox.js, { defer: true }).then(function () {
Fancybox.bind(selector, {
hideScrollbar: false,
Thumbs: {
autoStart: false,
},
caption: (fancybox, slide) => {
return slide.triggerEl.alt || null
}
});
})
}
</script><script>
window.addEventListener('DOMContentLoaded', (event) => {
const swiper_api = document.getElementById('swiper-api');
if (swiper_api != undefined) {
utils.css(`https://unpkg.com/[email protected]/swiper-bundle.min.css`);
utils.js(`https://unpkg.com/[email protected]/swiper-bundle.min.js`, { defer: true }).then(function () {
const effect = swiper_api.getAttribute('effect') || '';
var swiper = new Swiper('.swiper#swiper-api', {
slidesPerView: 'auto',
spaceBetween: 8,
centeredSlides: true,
effect: effect,
loop: true,
pagination: {
el: '.swiper-pagination',
clickable: true,
},
navigation: {
nextEl: '.swiper-button-next',
prevEl: '.swiper-button-prev',
},
});
})
}
});
</script><script>
document.addEventListener('DOMContentLoaded', function () {
window.codeElements = document.querySelectorAll('.code');
if (window.codeElements.length > 0) {
ctx.copycode = {
default_text: `Copy`,
success_text: `Copied`,
toast: `复制成功`,
};
utils.js('/js/plugins/copycode.js');
}
});
</script>
<!-- inject -->
</div></body></html>