Gitalk-基于Github项目issue的评论系统在博客系统中实践

2022-09-29 19:48:29 浏览数 (1)

[TOC]

0x00 Gitalk - 基于Github的评论系统

描述: 我想对于所有使用hexo、Hugo或者WordPress自建博客的博主来说GitTalk应该不陌生,GitTalk通过Github的OpenAPI以及issues功能实现社区评论确实还是很方便的,除开对国内访问速度较慢就没啥毛病,但是考虑到新手朋友此处还是简单介绍一下。

1.快速介绍

描述: Gitalk 是一个基于 Github Issue 和 Preact 的现代评论组件。 功能:

  • 使用 github 帐号进行身份验证
  • 无服务器,所有评论将存储为 github 问题
  • 个人和组织的github项目都可以用来存储评论
  • 本地化,支持多国语言 [en, zh-CN, zh-TW, es-ES, fr, ru, de, pl, ko, fa, ja]
  • 类似 Facebook 的无干扰模式(可以通过 DistentionFreeMode 选项启用)
  • 热键提交评论(cmd|ctrl enter)

项目地址:https://github.com/gitalk/gitalk 帮助文档:https://github.com/gitalk/gitalk/blob/master/readme-cn.md

温馨提示: 当前 Gitalk 最新版本为 1.7.2 (Mar 3, 2021), 如后续随着时间推移,可能会有些许变化,建议参考官网(https://github.com/gitalk/gitalk/tags)

2.安装部署

描述:安装引用Gitalk评论系统的两种方式,

安装实践

  • 方式1.在你的HTML页面中使用 link 与 script 标签引入。
代码语言:javascript复制
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/gitalk@1/dist/gitalk.css">
<script src="https://cdn.jsdelivr.net/npm/gitalk@1/dist/gitalk.min.js"></script>

<!-- or -->

<link rel="stylesheet" href="https://unpkg.com/gitalk/dist/gitalk.css">
<script src="https://unpkg.com/gitalk/dist/gitalk.min.js"></script>
  • 方式2.使用 npm 安装 gital 模块。
代码语言:javascript复制
# 模块安装
npm i --save gitalk

# 项目导入
import 'gitalk/dist/gitalk.css'
import Gitalk from 'gitalk'

配置实践

首先,您需要为商店评论选择一个公共 github 存储库(已存在或创建一个新存储库),然后创建一个 GitHub 应用程序,如果你没有,点击这里 (https://github.com/settings/applications/new) 注册一个新的。

代码语言:javascript复制
Application name : BlogTalk
Homepage URL : https://blog.weiyigeek.top
Application description : 欢迎访问 WeiyiGeek blog's [blog.weiyigeek.top] talk about , 欢迎留言骚扰哟,亲!
Authorization callback URL : https://blog.weiyigeek.top

WeiyiGeek.Register a new OAuth application

注意:您必须在授权回调 URL 字段中指定网站域 url。

然后,创建完成后你将获取Client ID 与 Client Secret,如下所示:

WeiyiGeek.application ID and Secret

注意:后续更新修改可以进行访问 Settings/Developer settings ( https://github.com/settings/developers )

最后,创建一个公共仓库此处我创建的是blogtalk,创建完后在项目的(https://github.com/WeiyiGeek/blogtalk/settings)中启用 issue 即可

WeiyiGeek.blogtalk

使用方式1.将如下代码添加到您的页面:

代码语言:javascript复制
<head>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/gitalk@1/dist/gitalk.css">
    <script src="https://cdn.jsdelivr.net/npm/gitalk@1/dist/gitalk.min.js"></script>
</head>
<body>
    <div id="gitalk-container"></div>
    <script>
        const gitalk = new Gitalk({
          clientID: 'GitHub Application Client ID',          // 8d8e96********797026d3
          clientSecret: 'GitHub Application Client Secret',  // secrets**********secrets
          repo: 'GitHub repo',          // blogtalk
          owner: 'GitHub repo owner',   // WeiyiGeek
          admin: ['GitHub repo owner and collaborators, only these guys can initialize github issues'], // ['WeiyiGeek']
          id: location.pathname,      // Ensure uniqueness and length less than 50
          distractionFreeMode: false  // Facebook-like distraction free mode
        })
        gitalk.render('gitalk-container')
    </script>
</body>

使用方式2.在React中使用

代码语言:javascript复制
import GitalkComponent from "gitalk/dist/gitalk-component";
// 并使用类似的组件
<GitalkComponent options={{
  clientID: "...",
  // ...
  // options below
}} />

温馨提示: Gitalk 对象实例化参数参考 (https://github.com/gitalk/gitalk#options)

3.使用实践

在 Hexo 中使用 描述: 此处以我的博客[https://blog.weiyigeek.top] 为例进行演示配置,此处笔者使用的是 hexo mellow 主题 , 已经经过二次魔改。

  • Step 1.在 Hexo 主题中的 _config.yaml 配置加入如下配置片段。
代码语言:javascript复制
# gittalk 评论系统
gitalk:
  enable: true
  owner: WeiyiGeek  # github账号
  repo: blogtalk    # 留言仓库
  proxy: /github/login/oauth/access_token # 反向代理解决跨域问题,后续将会主要讲解哦。
  oauth:
    client_id: 8d8e965c******97026d3       # Github App Auth ID 
    client_secret: e9c6141cb1f02f721********d01cb4d7a8f069 #  Github App Auth secret
  perPage: 15
  • Step 2.在主题文档引擎中加入如下片段。
代码语言:javascript复制
<div id="gitalk-container"></div>
<!-- 实际上是将 <script src="https://cdn.jsdelivr.net/npm/gitalk@1/dist/gitalk.min.js"></script> js 下载到了本地 -->
<script type="text/javascript" src="<%- url_for(theme_js('/js/plugins/gitalk.min', cache)) %>"></script>


<script type="text/javascript" src="<%- url_for(theme_js('/js/custom/gitalk.init', cache)) %>"></script>
<!-- themesmellowsourcejscustomgitalk.init.js -->
var gitalk = new Gitalk({
  clientID: '<%- theme.gitalk.oauth.client_id %>',
  clientSecret: '<%- theme.gitalk.oauth.client_secret %>',
  repo: '<%- theme.gitalk.repo %>',
  owner: '<%- theme.gitalk.owner %>',
  admin: ['<%- theme.gitalk.owner %>'],
  id: location.pathname,
  proxy: '<%- theme.gitalk.proxy %>',
  distractionFreeMode: true
})
#  hexo g 生成静态文件后的样子
# var gitalk = new Gitalk({
#   clientID: '8d8e965c******97026d3',
#   clientSecret: 'e9c6141cb1f02f721********d01cb4d7a8f069',
#   repo: 'blogtalk',
#   owner: 'WeiyiGeek',
#   admin: ['WeiyiGeek'],
#   id: location.pathname,
#   proxy: '/github/login/oauth/access_token',
#   distractionFreeMode: false
# })

# 创建 gitalk-container 
gitalk.render('gitalk-container')

温馨提示: 建议将distractionFreeMode设置为false,因为True真心难看。 温馨提示: 为了 Github Apps ID 与 Secrets 的安全,我们需要针对上面 new Gitalk 实例化参数进行js加密混淆 (http://www.esjson.com/jsEncrypt.html)

n.入坑出坑

1.使用Gitalk进行Github的Oauth认证无法跨域获取Token问题解决办法

描述: 在最开始之初我们也是使用官方演示代码中,使用的第三方提供的CORS代理服务,他会默认放行所有CORS请求,但是随着而来的问题是登陆会出现网络错误 Error: Network Error 或者在使用时出现 Forbidden 错误 (https://github.com/gitalk/gitalk/issues/514) 。

目前由于该CORS代理服务遭到滥用,因此做了限制,导致GitTalk失效,在实践中发现如下CORS代理服务其要么有限制要么根本不能使用,所以实践的朋友们就不要像使用如下CORS代理服务:

代码语言:javascript复制
# 限流
https://cors-anywhere.herokuapp.com/https://github.com/login/oauth/access_token
# 被墙
https://cors-anywhere.azm.workers.dev/https://github.com/login/oauth/access_token

温馨提示: CORS Anywhere 是一个 NodeJS 代理,它将 CORS 标头添加到代理请求中。 项目地址 (https://github.com/Rob--W/cors-anywhere)

在 百度 CSDN 中捡了一圈垃圾之后,还是没有最好的解决方案,然后通过某种方式Google了一下,找到两种替代的方式利用cloudflare worker (不幸得是默认的cf worker的域名workers.dev被墙了)或者 Vercel 搭建在线代理(无vps推荐使用Vercel) 或者 使用VPS中的nginx服务器来反代 https://github.com (比较推荐-当前博主正在使用)

方式1.没有VPS或者自己的服务器(想白嫖的) 描述: 在 cloudflare (https://dash.cloudflare.com/login/) 上创建一个免费的在线代理来解决gitalk授权登录跨域问题,利用CloudFlare Worker创建在线代理,不需要我们有服务器,也不需要搭建Node.js服务,只需要注册一个CloudFlare账号,创建一个Worker,部署一个JS脚本就可以了,简单方便,下面我们就来看看如何创建吧。

WeiyiGeek.cloudflare-cors-anywhere

创建好之后我们便可编辑其 Worker 服务代码,如下代码也可通过 https://github.com/WeiyiGeek/SecOpsDev/tree/master/Application/Blog/Hexo/Gitalk 获得。

代码语言:javascript复制
const exclude = [];     // Regexp for blacklisted urls
const include = [/^https?://.*weiyigeek.top$/, /^https?://localhost/]; // Regexp for whitelisted origins e.g.
const apiKeys = {
  EZWTLwVEqFnaycMzdhBz: {
    name: 'Test App',
    expired: false,
    expiresAt: new Date('2023-01-01'),
    exclude: [], // Regexp for blacklisted urls
    include: ["^http.?://www.weiyigeek.top$", "weiyigeek.top$", "^https?://localhost/"], // Regexp for whitelisted origins
  },
};

// Config is all above this line.
// It should not be necessary to change anything below.

function verifyCredentials(request) {
  // Throws exception on verification failure.
  const requestApiKey = request.headers.get('x-cors-proxy-api-key');
  if (!Object.keys(apiKeys).includes(requestApiKey)) {
    throw new UnauthorizedException('Invalid authorization key.');
  }

  if (apiKeys[requestApiKey].expired) {
    throw new UnauthorizedException('Expired authorization key.');
  }

  if (apiKeys[requestApiKey].expiresAt && apiKeys[requestApiKey].expiresAt.getTime() < Date.now()) {
    throw new UnauthorizedException(`Expired authorization key.nKey was valid until: ${apiKeys[requestApiKey].expiresAt}`);
  }

  return apiKeys[requestApiKey];
}

function checkRequiredHeadersPresent(request) {
  // Throws exception on verification failure.
  if (!request.headers.get('Origin') && !request.headers.get('x-requested-with')) {
    throw new BadRequestException('Missing required request header. Must specify one of: origin,x-requested-with');
  }
}

function UnauthorizedException(reason) {
  this.status = 401;
  this.statusText = 'Unauthorized';
  this.reason = reason;
}

function BadRequestException(reason) {
  this.status = 400;
  this.statusText = 'Bad Request';
  this.reason = reason;
}

function isListed(uri, listing) {
  let returnValue = false;
  console.log(uri);
  if (typeof uri === 'string') {
    for (const m of listing) {
      if (uri.match(m) !== null) {
        returnValue = true;
      }
    }
  } else { //   Decide what to do when Origin is null
    returnValue = true; // True accepts null origins false rejects them.
  }

  return returnValue;
}

function fix(myHeaders, request, isOPTIONS) {
  myHeaders.set('Access-Control-Allow-Origin', request.headers.get('Origin'));
  if (isOPTIONS) {
    myHeaders.set('Access-Control-Allow-Methods', request.headers.get('access-control-request-method'));
    const acrh = request.headers.get('access-control-request-headers');

    if (acrh) {
      myHeaders.set('Access-Control-Allow-Headers', acrh);
    }

    myHeaders.delete('X-Content-Type-Options');
  }

  return myHeaders;
}

function parseURL(requestUrl) {
  const match = requestUrl.match(/^(?:(https?:)?//)?(([^/?] ?)(?::(d{0,5})(?=[/?]|$))?)([/?][Ss]*|$)/i);
  //                              ^^^^^^^          ^^^^^^^^      ^^^^^^^                ^^^^^^^^^^^^
  //                            1:protocol       3:hostname     4:port                 5:path   query string
  //                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  //                                            2:host

  if (!match) {
    console.log('no match');
    throw new BadRequestException('Invalid URL for proxy request.');
  }

  console.log('parseURL:match:', match);

  if (!match[1]) {
    console.log('nothing in match group 1');
    if (/^https?:/i.test(requestUrl)) {
      console.log('The pattern at top could mistakenly parse "http:///" as host="http:" and path=///.');
      throw new BadRequestException('Invalid URL for proxy request.');
    }

    // Scheme is omitted.
    if (requestUrl.lastIndexOf('//', 0) === -1) {
      console.log('"//" is omitted');
      requestUrl = '//'   requestUrl;
    }

    requestUrl = (match[4] === '443' ? 'https:' : 'http:')   requestUrl;
  }

  const parsed = new URL(requestUrl);
  if (!parsed.hostname) {
    console.log('"http://:1/" and "http:/notenoughslashes" could end up here.');
    throw new BadRequestException('Invalid URL for proxy request.');
  }

  return parsed;
}

async function proxyRequest(request, activeApiKey) {
  const isOPTIONS = (request.method === 'OPTIONS');
  const originUrl = new URL(request.url);
  const origin = request.headers.get('Origin');
  // ParseURL throws when the url is invalid
  const fetchUrl = parseURL(request.url.replace(originUrl.origin, '').slice(1));

  // Throws if it fails the check
  checkRequiredHeadersPresent(request);

  // Excluding urls which are not allowed as destination urls
  // Exclude origins which are not int he included ones
  if (isListed(fetchUrl.toString(), [...exclude, ...(activeApiKey?.exclude || [])]) || !isListed(origin, [...include, ...(activeApiKey?.include || [])])) {
    throw new BadRequestException('Origin or Destination URL is not allowed.');
  }

  let corsHeaders = request.headers.get('x-cors-headers');

  if (corsHeaders !== null) {
    try {
      corsHeaders = JSON.parse(corsHeaders);
    } catch {}
  }

  if (!originUrl.pathname.startsWith('/')) {
    throw new BadRequestException('Pathname does not start with "/"');
  }

  const recvHpaireaders = {};
  for (const pair of request.headers.entries()) {
    if ((pair[0].match('^origin') === null)
        && (pair[0].match('eferer') === null)
        && (pair[0].match('^cf-') === null)
        && (pair[0].match('^x-forw') === null)
        && (pair[0].match('^x-cors-headers') === null)
    ) {
      recvHpaireaders[pair[0]] = pair[1];
    }
  }

  if (corsHeaders !== null) {
    for (const c of Object.entries(corsHeaders)) {
      recvHpaireaders[c[0]] = c[1];
    }
  }

  const newRequest = new Request(request, {
    headers: recvHpaireaders,
  });

  const response = await fetch(fetchUrl, newRequest);
  let myHeaders = new Headers(response.headers);
  const newCorsHeaders = [];
  const allh = {};
  for (const pair of response.headers.entries()) {
    newCorsHeaders.push(pair[0]);
    allh[pair[0]] = pair[1];
  }

  newCorsHeaders.push('cors-received-headers');
  myHeaders = fix(myHeaders, request, isOPTIONS);

  myHeaders.set('Access-Control-Expose-Headers', newCorsHeaders.join(','));

  myHeaders.set('cors-received-headers', JSON.stringify(allh));

  const body = isOPTIONS ? null : await response.arrayBuffer();

  return new Response(body, {
    headers: myHeaders,
    status: (isOPTIONS ? 200 : response.status),
    statusText: (isOPTIONS ? 'OK' : response.statusText),
  });
}

function homeRequest(request) {
  const isOPTIONS = (request.method === 'OPTIONS');
  const originUrl = new URL(request.url);
  const origin = request.headers.get('Origin');
  const remIp = request.headers.get('CF-Connecting-IP');
  const corsHeaders = request.headers.get('x-cors-headers');
  let myHeaders = new Headers();
  myHeaders = fix(myHeaders, request, isOPTIONS);

  let country = false;
  let colo = false;
  if (typeof request.cf !== 'undefined') {
    country = typeof request.cf.country === 'undefined' ? false : request.cf.country;
    colo = typeof request.cf.colo === 'undefined' ? false : request.cf.colo;
  }

  return new Response(
    'CLOUDFLARE-CORS-ANYWHEREnn'
          'Source:nhttps://github.com/chrisspiegl/cloudflare-cors-anywherenn'
          'Usage:n'
          originUrl.origin   '/{uri}n'
          'Header x-cors-proxy-api-key must be set with valid api keyn'
          'Header origin or x-requested-with must be setnn'
        //   'Limits: 100,000 requests/dayn'
        //   '          1,000 requests/10 minutesnn'
          (origin === null ? '' : 'Origin: '   origin   'n')
          'Ip: '   remIp   'n'
          (country ? 'Country: '   country   'n' : '')
          (colo ? 'Datacenter: '   colo   'n' : '')   'n'
          ((corsHeaders === null) ? '' : 'nx-cors-headers: '   JSON.stringify(corsHeaders)),
    {status: 200, headers: myHeaders},
  );
}

async function handleRequest(request) {
  const {protocol, pathname} = new URL(request.url);
  // In the case of a "Basic" authentication, the exchange MUST happen over an HTTPS (TLS) connection to be secure.
  if (protocol !== 'https:' || request.headers.get('x-forwarded-proto') !== 'https') {
    throw new BadRequestException('Must use a HTTPS connection.');
  }

  switch (pathname) {
    case '/favicon.ico':
    case '/robots.txt':
      return new Response(null, {status: 204});
    case '/':
      return homeRequest(request);
    default: {
      // Not 100% sure if this is a good idea…
      // Right now all OPTIONS requests are just simply replied to because otherwise they fail.
      // This is necessary because apparently, OPTIONS requests do not carry the `x-cors-proxy-api-key` header so this can not be authorized.
      if (request.method === 'OPTIONS') {
        return new Response(null, {
          headers: fix(new Headers(), request, true),
          status: 200,
          statusText: 'OK',
        });
      }

      // The "x-cors-proxy-api-key" header is sent when authenticated.
      //if (request.headers.has('x-cors-proxy-api-key')) {
        // Throws exception when authorization fails.
        //const activeApiKey = verifyCredentials(request);

        // Only returns this response when no exception is thrown.
        return proxyRequest(request);
      //}

      // Not authenticated.
      //throw new UnauthorizedException('Valid x-cors-proxy-api-key header has to be provided.');
    }
  }
}

addEventListener('fetch', async event => {
  event.respondWith(
    handleRequest(event.request).catch(error => {
      const message = error.reason || error.stack || 'Unknown Error';

      return new Response(message, {
        status: error.status || 500,
        statusText: error.statusText || null,
        headers: {
          'Content-Type': 'text/plain;charset=UTF-8',
          // Disables caching by default.
          'Cache-Control': 'no-store',
          // Returns the "Content-Length" header for HTTP HEAD requests.
          'Content-Length': message.length,
        },
      });
    }),
  );
});

部署结果: https://cors-anywhere.weiyigeek.workers.dev/

WeiyiGeek.cloudflare-cors-anywhere-code

温馨提示: cloudflare 构建无服务器应用程序免费版本每天限额10万次请求,所有为了避免其它 people 恶意使用,请在使用时设置访问白名单, 上述源码来源于 (https://github.com/chrisspiegl/cloudflare-cors-anywhere)。

温馨提示: 除了使用 cloudflare 还可以使用 Vercel 免费部署node.js项目解决跨域问题,你可参考该项目 (https://github.com/Dedicatus546/cors-server) ,此处就不在累述。

方式2.有公网VPS、服务器 描述: 由于我自己有VPS所以就不借用 cloudflare 与 Vercel,因为其国内网络原因,时而通畅时而有缓慢 , 此处我将使用Nginx服务在blog.conf配置Nginx文件中加入如下location指令片段

代码语言:javascript复制
# https - www.weiyigeek.top
server {
  listen       80;
  listen       443 ssl http2;
  server_name  blog.weiyigeek.top;
   
  # CORS
  add_header Access-Control-Allow-Origin '*.weiyigeek.top';
  add_header Access-Control-Allow-Methods 'GET,POST,OPTIONS';
  add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';

...

  # Gitalk Auth Use
  location /github {
    if ($request_method = 'OPTIONS') {
      return 204;
    }
    proxy_pass https://github.com/; # 注意尾部斜杠不能少
  }

...
  error_page  403          /warn/403.html;
  error_page  404          /warn/404.html;
  error_page  500 502 503  /warn/500.html;
  error_page  504          /warn/504.html;
}

配置完成后检测blog.conf配置以及重载nginx服务 nginx -t && nginx -s reload, 然后修改Hexo 主题中的 _config.yaml 将 Gitalk 的 proxy 配置为 proxy: /github/login/oauth/access_token 即可。

代码语言:javascript复制
# gittalk 评论系统
gitalk:
  enable: true
  owner: WeiyiGeek  # github账号
  repo: blogtalk    # 留言仓库
  proxy: /github/login/oauth/access_token # 关键点 (前台请求是https://blog.weiyigeek.top/github/login/oauth/access_token, 而实际请求是https://github.com/login/oauth/access_token,所以解决了跨域问题)
  oauth:
    client_id: 8d8e965c******97026d3       # Github App Auth ID 
    client_secret: e9c6141cb1f02f721********d01cb4d7a8f069 #  Github App Auth secret
  perPage: 15

之后,我们需要批量初始每篇文章issue根据其路径/2020/3-20-658.html,此处采用了gitalk-auto-init.js脚本进行批量初始化文章issue。

温馨提示: 下述 gitalk-auto-init.js 脚本可以通过如下连接( https://github.com/WeiyiGeek/SecOpsDev/tree/master/Application/Blog/Hexo/Gitalk )进行获取

脚本依赖:

代码语言:javascript复制
$ npm i -S hexo-generator-sitemap
$ npm i -D md5 moment request xml-parser
  moment@2.29.2
  request@2.88.2
  md5@2.3.0
  xml-parser@1.2.1
added 55 packages from 70 contributors in 8.467s

配置运行:

代码语言:javascript复制
// gitalk-auto-init.js 脚本部分片段
// 配置信息
const config = {
  username: 'weiyigeek',   // GitHub repository 所有者,可以是个人或者组织。对应Gitalk配置中的owner
  repo: "blogtalk",         // 储存评论issue的github仓库名,仅需要仓库名字即可。对应 Gitalk配置中的repo
  token: 'ghp_wnpWqL********6RIf0NR5iD',   // 前面在Github中的 personal access token
  sitemap: path.join(__dirname, './public/sitemap.xml'), // 自己站点的 sitemap 文件地址
  cache: true, // 是否启用缓存,启用缓存会将已经初始化的数据写入配置的 gitalkCacheFile 文件,下一次直接通过缓存文件判断
  gitalkCacheFile: path.join(__dirname, './gitalk-init-cache.json'), // 用于保存 gitalk 已经初始化的 id 列表
  gitalkErrorFile: path.join(__dirname, './gitalk-init-error.json'), // 用于保存 gitalk 初始化报错的数据
};

// sitemap.xml 示例
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
    <url>
    <loc>https://blog.weiyigeek.top/2020/5-28-588.html</loc>
    <lastmod>2022-08-15T14:39:08.638Z</lastmod>
    <title>Ingress-Nginx进阶学习实践扩充配置记录</title>
  </url>
    ....
</urlset>

WeiyiGeek.批量初始化文章issue

执行结果:

代码语言:javascript复制
--------- 运行结果 ---------

报错数据: 1 条。参考文件 /mnt/e/githubProject/blog/gitalk-init-error.json。
本次成功: 27 条。
写入缓存: 90 条,已初始化 63 条,本次成功: 27 条。参考文件 /mnt/e/githubProject/blog/gitalk-init-cache.json。

我们也可以通过 blogtalk 项目中 issue (https://github.com/WeiyiGeek/blogtalk/issues) 查看初始化结果以及最新评论。

WeiyiGeek.blogtalk-issue

在初始化issue完成之后,我们可以找到一篇 https://blog.weiyigeek.top/about/ 文章进行留言验证。

WeiyiGeek.Gitalk 留言验证

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