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<a class="article-title" href="/2016/05/19/小记/">小记</a>
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<p>今天进了四个机房，刚回到办事处，带着学的态度进机房，一路上都没感觉到累的，即时同事都说累</p>
<p>见的人多了，就会发现人的不一样，有人对工作表现的很随意，过了今天可以不考虑明天，有人很严谨，思前想后。</p>
<p>有的人有学习的机会不会努力去学，有的人没机会却想尽办法学习(最近一修电视机的表达了强烈的学习欲望，修电视机一个月没修好都没抱怨，反倒是说自己修的过程中学到了很多东西，不吃亏)。</p>
<p>有的人为了蝇头小利不惜厚脸皮的索取交易范围外的，有些做好本职工作反而会获得将来更多的利润。</p>
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<article id="post-用nodejs模拟v2ex登录并获取福利" class="article article-type-post" itemscope itemprop="blogPost">
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<a class="article-title" href="/2016/02/25/用nodejs模拟v2ex登录并获取福利/">用nodejs模拟v2ex登录并获取福利</a>
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<p>上一篇日记讲的用nodejs模拟一个简单的网站登录并发帖，当碰到v2ex这种有经验的网站就需要懂点脑筋。</p>
<h3 id="模拟思路"><a href="#模拟思路" class="headerlink" title="模拟思路"></a>模拟思路</h3><p>想用node模拟拿到v2ex的福利需要经过如下几步:</p>
<ol>
<li>访问<code>http://v2ex.com/signin</code>,拿到隐藏的once和当前页面的cookie<br><img src="/pic/monidenglu/v2ex.jpg" alt=""></li>
<li><p>用拿到的cookie和once，添加账户和密码post<code>http://v2ex.com/signin</code>页面，结束后组合新设置的cookie，每一次都必须保持cookie的完整性才能走下一步。<br>此时的cookie</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">Cookie:PB3_SESSION="2|1:0|10:1456402302|11:PB3_SESSION|36:djJleDoxODMuNjAuOTAuODI6NDc3MzEwMDY=|756ddc25710006ff35e3cf0a5939cea49f1873cf2b6b2d5f53f0f1e3f9596fb4"; _gat=1; _ga=GA1.2.1026641497.1456402470; A2="2|1:0|10:1456402318|2:A2|56:MjI3MDQ0NDJmM2QxMDVhYzQ1M2ZiOGNmNzg4NWI1ZDEzZGM5NzY3ZQ==|050c5d97a7d20a74e9f4d29005d84616401fc0cbf055c90e44efe01d6d4a38b6"; V2EX_LANG=zhcn</span><br></pre></td></tr></table></figure>
</li>
<li><p>已经拿到登录的cookie，按照常理这一步就应该访问<code>http://v2ex.com/mission/daily</code>页面获取福利，这是你会发现v2ex提醒你说<code>你的浏览器有些奇奇怪怪的设置，请换一个干净的浏览器</code>,原来的cookie的信息不完整。缺少如下信息:</p>
<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">V2EX_TAB="2|1:0|10:1456402318|8:V2EX_TAB|8:dGVjaA==|7a47087a9137bc9476f0c222a2723a058eb6e44a9f5f5a8600441ae9d5c92589"; expires=Thu, 10 Mar 2016 12:11:58 GMT; Path=/</span><br></pre></td></tr></table></figure>
<p> 而这些信息需要访问首页才能拿到，这时候可以访问<code>http://v2ex.com</code>拿到缺少的信息，访问首页还可以获取最新的<code>once</code>,因为登录后这个<code>once</code>就变了，同时还可以测试是否登录，因为登录了顶部栏会显示用户的名称。</p>
</li>
<li>所有的准备工作都做好了，访问<code>/mission/daily/redeem?once=</code>还是不行，用抓包工作或者浏览器都可以看到原来访问这个地址后返回<code>302</code>，然后立马访问<code>http://v2ex.com/mission/daily</code>.这时所有的谜团才揭开，出现成功领取福利的提示。<br><img src="/pic/monidenglu/v2ex-1.jpg" alt=""></li>
</ol>
<h3 id="代码"><a href="#代码" class="headerlink" title="代码"></a>代码</h3><p>复制下面的代码或者直接从github上面取<a href="https://github.com/ForestCho/node-v2ex" target="_blank" rel="noopener">node-v2ex</a><br><figure class="highlight plain"><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><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br><span class="line">107</span><br><span class="line">108</span><br><span class="line">109</span><br><span class="line">110</span><br></pre></td><td class="code"><pre><span class="line">var EventProxy = require('eventproxy'),</span><br><span class="line"> superagent = require('superagent'),</span><br><span class="line"> cheerio = require('cheerio'),</span><br><span class="line"> loginUrl = 'http://v2ex.com/signin',</span><br><span class="line"> baseUrl = 'http://v2ex.com',</span><br><span class="line"> dairyMissionUrl = 'http://v2ex.com/mission/daily',</span><br><span class="line"> redeem = baseUrl + '/mission/daily/redeem?once=';</span><br><span class="line">var ep = new EventProxy();</span><br><span class="line"></span><br><span class="line">var formData = {</span><br><span class="line"> 'u': '[email protected]',</span><br><span class="line"> 'p': '123455',</span><br><span class="line"> 'once': '61048',</span><br><span class="line"> 'next': '/mission/daily'</span><br><span class="line">};</span><br><span class="line">var headers = {</span><br><span class="line"> 'Content-Type': 'application/x-www-form-urlencoded',</span><br><span class="line"> Host: 'v2ex.com',</span><br><span class="line"> Origin: 'http://v2ex.com',</span><br><span class="line"> Referer: 'http://v2ex.com/signin',</span><br><span class="line"> 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 SE 2.X MetaSr 1.0'</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line">var headers2 = {</span><br><span class="line"> 'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',</span><br><span class="line"> 'Accept-Encoding': 'gzip,deflate,sdch',</span><br><span class="line"> 'Accept-Language': 'zh-CN,zh;q=0.8',</span><br><span class="line"> 'Proxy-Connection': 'keep-alive',</span><br><span class="line"> 'Host': 'v2ex.com',</span><br><span class="line"> 'Referer': 'http://v2ex.com/mission/daily',</span><br><span class="line"> 'Upgrade-Insecure-Requests': 1,</span><br><span class="line"> 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 SE 2.X MetaSr 1.0'</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line">var ep = new EventProxy();</span><br><span class="line"></span><br><span class="line">var cookie = null;</span><br><span class="line"></span><br><span class="line">console.log('登录中...\n此过程你有被封IP的危险...');</span><br><span class="line">superagent</span><br><span class="line"> .get(loginUrl)</span><br><span class="line"> .set(headers)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"> $ = cheerio.load(res.text);</span><br><span class="line"> var iptonce = $('input');</span><br><span class="line"> formData.once = iptonce[3].attribs.value;</span><br><span class="line"> var setPreCookie = res.headers['set-cookie'];</span><br><span class="line"> cookie = setPreCookie[0] + ";" + setPreCookie[1];</span><br><span class="line"> superagent</span><br><span class="line"> .post(loginUrl)</span><br><span class="line"> .set(headers)</span><br><span class="line"> .set('Cookie', cookie)</span><br><span class="line"> .type('form')</span><br><span class="line"> .send(formData)</span><br><span class="line"> .redirects(0)</span><br><span class="line"> .end(function(err, result) {</span><br><span class="line"> if (typeof(result) == 'undefined') {</span><br><span class="line"> console.log("登录失败\n");</span><br><span class="line"> } else {</span><br><span class="line"> var setLoginCookie = result.headers['set-cookie'];</span><br><span class="line"> if (typeof(setLoginCookie) == 'undefined') {</span><br><span class="line"> console.log("登录失败\n");</span><br><span class="line"> } else {</span><br><span class="line"> cookie = setLoginCookie[0] + ";" + setLoginCookie[1] + ";" + cookie;</span><br><span class="line"> ep.emit("cookie", cookie);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">//访问首页判断是否成功，并获取相对应的cookie信息</span><br><span class="line">ep.on("cookie", function(cookie) {</span><br><span class="line"> console.log('测试是否登陆成功中...');</span><br><span class="line"> superagent</span><br><span class="line"> .get(baseUrl)</span><br><span class="line"> .set(headers)</span><br><span class="line"> .set('Cookie', cookie)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"></span><br><span class="line"> var setTabCookie = res.headers['set-cookie'];</span><br><span class="line"> var fulicookie = setTabCookie[0] + ";" + setTabCookie[1] + ";" + cookie;</span><br><span class="line"> $ = cheerio.load(res.text);</span><br><span class="line"> var name = $('.top')[1].children[0].data;</span><br><span class="line"> console.log(name + "登录成功");</span><br><span class="line"> var temp = res.text;</span><br><span class="line"> var fuliurl = redeem + res.text.substr(res.text.indexOf('once') + 5, 5);</span><br><span class="line"> ep.emit("fuliurl", fuliurl);</span><br><span class="line"> ep.emit("fulicookie", fulicookie);</span><br><span class="line"> });</span><br><span class="line">})</span><br><span class="line"></span><br><span class="line">//访问福利网址</span><br><span class="line">ep.all("fuliurl", "fulicookie", function(fuliurl, fulicookie) {</span><br><span class="line"> superagent</span><br><span class="line"> .get(fuliurl)</span><br><span class="line"> .set(headers2)</span><br><span class="line"> .redirects(0)</span><br><span class="line"> .set('Cookie', fulicookie)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"> superagent</span><br><span class="line"> .get(dairyMissionUrl)</span><br><span class="line"> .set(headers2)</span><br><span class="line"> .set('Cookie', cookie)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"> $ = cheerio.load(res.text);</span><br><span class="line"> console.log($('.message').text());</span><br><span class="line"> })</span><br><span class="line"> })</span><br><span class="line">})</span><br></pre></td></tr></table></figure></p>
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<article id="post-nodejs学习笔记(5) - nodejs模拟登录和发帖" class="article article-type-post" itemscope itemprop="blogPost">
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<a class="article-title" href="/2016/02/21/nodejs学习笔记(5) - nodejs模拟登录和发帖/">nodejs学习笔记(5) - nodejs模拟登录和发帖</a>
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<a href="/2016/02/21/nodejs学习笔记(5) - nodejs模拟登录和发帖/">
<time datetime="2016-02-21T03:29:32.000Z" itemprop="datePublished">2016-02-21</time>
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<a class="article-category-link" href="/categories/代码/">代码</a>
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<a class="tag-link" href="/tags/nodejs/">nodejs</a>, <a class="tag-link" href="/tags/爬虫/">爬虫</a>
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<p>爬虫是个有趣的东西，经常上V2EX，就像模拟登录然后自动领取每天的奖励，结果不行测试的过程中导致IP被封，还是等等吧，就找了个别的网站模拟下。</p>
<h3 id="模拟登录使用到的模块"><a href="#模拟登录使用到的模块" class="headerlink" title="模拟登录使用到的模块"></a>模拟登录使用到的模块</h3><ol>
<li>eventproxy流程控制</li>
<li>superagent是一个轻量的Ajax API，服务器端（Node.js）客户端（浏览器端）均可使用,SuperAgent具有学习曲线低、使用简单、可读性好的特点,可作为客户端请求代理模块使用，当你想处理get,post,put,delete,head请求时，可以考虑使用SuperAgent。</li>
<li>cheerio网页解析工具</li>
</ol>
<h3 id="分析"><a href="#分析" class="headerlink" title="分析"></a>分析</h3><h4 id="登录获取Cookie"><a href="#登录获取Cookie" class="headerlink" title="登录获取Cookie"></a>登录获取Cookie</h4><p>先用浏览器获取登录时的Header<br><img src="/pic/monidenglu/1.jpg" alt=""><br>定义一个尽可能详细的header，为了保护原网站，我打马赛克了。<br><figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">var httpHeader = {</span><br><span class="line"> 'Content-Type': 'application/x-www-form-urlencoded',</span><br><span class="line"> Host: 'xxx.xx',</span><br><span class="line"> Origin: 'http://xxx.xxx',</span><br><span class="line"> Referer: 'http://xxx.xxx/login/',</span><br><span class="line"> 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 SE 2.X MetaSr 1.0'</span><br><span class="line"> };</span><br></pre></td></tr></table></figure></p>
<p>定义账户的POST数据<br><figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">var accountData = {</span><br><span class="line"> email: '[email protected]',</span><br><span class="line"> password: 'ccccc',</span><br><span class="line"> remember: 'on',</span><br><span class="line"> from: '/'</span><br><span class="line"> };</span><br></pre></td></tr></table></figure></p>
<p><img src="/pic/monidenglu/3.jpg" alt=""><br>通过这个图可以发现登录后，浏览器会提交如图中的cookie，所以我需要模拟提交一个类似的cookie。<br>然后用<code>superagent</code>模拟登录，如果返回的result中包含<code>set-cookie</code>说明登录成功，然后组合成一个途中的cookie。只需要把<code>Set-Cookie</code>数组中的uid和password提取出来就可以。如果返回的result不存在或者set-cookie不存在则说明登录失败。</p>
<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">superagent</span><br><span class="line"> .post(baseUrl)</span><br><span class="line"> .set(httpHeader)</span><br><span class="line"> .type('form')</span><br><span class="line"> .send(accountData)</span><br><span class="line"> .redirects(0)</span><br><span class="line"> .end(function(err, result) { </span><br><span class="line"> if (typeof(result) == 'undefined') {</span><br><span class="line"> console.log("登录失败");</span><br><span class="line"> } else {</span><br><span class="line"> var setCookie = result.headers['set-cookie']; </span><br><span class="line"> if (typeof(setCookie) == 'undefined') {</span><br><span class="line"> console.log("登录失败");</span><br><span class="line"> } else {</span><br><span class="line"> var cookie = setCookie[0] + ";" + setCookie[1];</span><br><span class="line"> ep.emit("cookie", cookie);</span><br><span class="line"> console.log(accountData.email+"登录成功");</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> });</span><br></pre></td></tr></table></figure>
<h4 id="用获取的cookie发帖"><a href="#用获取的cookie发帖" class="headerlink" title="用获取的cookie发帖"></a>用获取的cookie发帖</h4><p>发帖时需要的数据方式也可以跟踪一个发帖过程获取，与登录不同的是需要添加新获取的cookie<br><figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">ep.on("cookie", function(cookie) {</span><br><span class="line"> superagent</span><br><span class="line"> .post("http://youqu.de/topic/add")</span><br><span class="line"> .set(httpHeader)</span><br><span class="line"> .type('form')</span><br><span class="line"> .send(subData)</span><br><span class="line"> .set('Cookie', cookie)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"> $ = cheerio.load(res.text);</span><br><span class="line"> var screenName = $('.screen-name a').text(); </span><br><span class="line"> if(screenName.length >0 ){</span><br><span class="line"> console.log("成功");</span><br><span class="line"> console.log(screenName);</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line">})</span><br></pre></td></tr></table></figure></p>
<h3 id="全部代码"><a href="#全部代码" class="headerlink" title="全部代码"></a>全部代码</h3><figure class="highlight plain"><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><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br></pre></td><td class="code"><pre><span class="line">var EventProxy = require('eventproxy'),</span><br><span class="line"> superagent = require('superagent'),</span><br><span class="line"> cheerio = require('cheerio'),</span><br><span class="line"> baseUrl = 'http://youqu.de/login/';</span><br><span class="line"></span><br><span class="line">//账户数据和模拟浏览器的Header</span><br><span class="line">var accountData = {</span><br><span class="line"> email: '[email protected]',</span><br><span class="line"> password: 'ccccc',</span><br><span class="line"> remember: 'on',</span><br><span class="line"> from: '/'</span><br><span class="line"> },</span><br><span class="line"> httpHeader = {</span><br><span class="line"> 'Content-Type': 'application/x-www-form-urlencoded',</span><br><span class="line"> Host: 'xxx.xxx',</span><br><span class="line"> Origin: 'http://xxx.xxx',</span><br><span class="line"> Referer: 'http://xxx.xxx/login/',</span><br><span class="line"> 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.122 Safari/537.36 SE 2.X MetaSr 1.0'</span><br><span class="line"> };</span><br><span class="line"></span><br><span class="line">//发帖时提交的数据</span><br><span class="line">var subData = {</span><br><span class="line"> title: '软绵绵的周日',</span><br><span class="line"> content: '软绵绵的周日'</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">var ep = new EventProxy();</span><br><span class="line"></span><br><span class="line">//读取参数输入的账户数据</span><br><span class="line">var arguments = process.argv.splice(2);</span><br><span class="line">if (arguments.length == 2) {</span><br><span class="line"> accountData.email = arguments[0];</span><br><span class="line"> accountData.password = arguments[1];</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"></span><br><span class="line">//获取cookie</span><br><span class="line">superagent</span><br><span class="line"> .post(baseUrl)</span><br><span class="line"> .set(httpHeader)</span><br><span class="line"> .type('form')</span><br><span class="line"> .send(accountData)</span><br><span class="line"> .redirects(0)</span><br><span class="line"> .end(function(err, result) { </span><br><span class="line"> if (typeof(result) == 'undefined') {</span><br><span class="line"> console.log("登录失败");</span><br><span class="line"> } else {</span><br><span class="line"> var setCookie = result.headers['set-cookie']; </span><br><span class="line"> if (typeof(setCookie) == 'undefined') {</span><br><span class="line"> console.log("登录失败");</span><br><span class="line"> } else {</span><br><span class="line"> var cookie = setCookie[0] + ";" + setCookie[1];</span><br><span class="line"> ep.emit("cookie", cookie);</span><br><span class="line"> console.log(accountData.email+"登录成功");</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> //用账户发帖</span><br><span class="line">ep.on("cookie", function(cookie) {</span><br><span class="line"> superagent</span><br><span class="line"> .post("http://xxx.xx/topic/add")</span><br><span class="line"> .set(httpHeader)</span><br><span class="line"> .type('form')</span><br><span class="line"> .send(subData)</span><br><span class="line"> .set('Cookie', cookie)</span><br><span class="line"> .end(function(err, res) {</span><br><span class="line"> $ = cheerio.load(res.text);</span><br><span class="line"> var screenName = $('.screen-name a').text(); </span><br><span class="line"> if(screenName.length >0 ){</span><br><span class="line"> console.log("成功");</span><br><span class="line"> console.log(screenName);</span><br><span class="line"> }</span><br><span class="line"> });</span><br><span class="line">})</span><br></pre></td></tr></table></figure>
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<article id="post-background-attachment是个什么东东？" class="article article-type-post" itemscope itemprop="blogPost">
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<a class="article-title" href="/2016/02/18/background-attachment是个什么东东？/">background-attachment是个什么东东？</a>
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<a href="/2016/02/18/background-attachment是个什么东东？/">
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<a class="article-category-link" href="/categories/代码/">代码</a>
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<a class="tag-link" href="/tags/background-attachment/">background-attachment</a>, <a class="tag-link" href="/tags/css/">css</a>
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<p>今天看到一个挺好看的页面效果，觉得挺神奇，不觉查看起代码，发现最终实现效果的关键代码是background-attachment。</p>
<pre><code>background-attachment：可以取值 fixed 、 local 、 scroll
默认值：scroll
</code></pre><h4 id="取值"><a href="#取值" class="headerlink" title="取值"></a>取值</h4><ol>
<li>fixed：<br>背景图像相对于窗体固定。依赖于其视口(viewport)，当页面滚动时，背景效果不会随之滚动，而是保留背景本来的位置。当滚动式，背景随着当前元素(Div)的滚动而相对应显示。可以想象所有的背景堆积在一起，当前元素滚到时才显示出来。</li>
<li>scroll：<br>这是我们平时看到的效果，背景图像依赖于元素，也就是说当元素内容滚动时背景图像不会跟着滚动，因为背景图像总是要跟着元素本身。但会随元素的祖先元素或窗体一起滚动。</li>
<li>local：<br>背景图像相对于元素内容固定，也就是说当元素随元素滚动时背景图像也会跟着滚动，因为背景图像总是要跟着内容。（CSS3）</li>
</ol>
<h4 id="代码"><a href="#代码" class="headerlink" title="代码"></a>代码</h4><p>当background-attachment取值fixed时的效果<br><figure class="highlight html"><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><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="tag"><<span class="name">html</span>></span></span><br><span class="line"><span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">style</span> <span class="attr">type</span>=<span class="string">"text/css"</span>></span><span class="undefined"></span></span><br><span class="line"><span class="undefined"> body {</span></span><br><span class="line"><span class="undefined"> margin: 0px;</span></span><br><span class="line"><span class="undefined"> padding: 0px;</span></span><br><span class="line"><span class="undefined"> }</span></span><br><span class="line"><span class="undefined"> body div{ </span></span><br><span class="line"><span class="undefined"> height: 800px;</span></span><br><span class="line"><span class="undefined"> width: 100%;</span></span><br><span class="line"><span class="undefined"> background-repeat: no-repeat;</span></span><br><span class="line"><span class="undefined"> background-attachment: fixed;</span></span><br><span class="line"><span class="undefined"> background-size: cover;</span></span><br><span class="line"><span class="undefined"> background-position: center;</span></span><br><span class="line"><span class="undefined"> }</span></span><br><span class="line"><span class="undefined"> .test {</span></span><br><span class="line"><span class="undefined"> background-image: url(./1.jpg);</span></span><br><span class="line"><span class="undefined"> }</span></span><br><span class="line"><span class="undefined"> .test1 { </span></span><br><span class="line"><span class="undefined"> background-image: url(./2.jpg); </span></span><br><span class="line"><span class="undefined"> }</span></span><br><span class="line"><span class="undefined"> .test2 { </span></span><br><span class="line"><span class="undefined"> background-image: url(./3.jpg); </span></span><br><span class="line"><span class="undefined"> }</span></span><br><span class="line"><span class="undefined"> </span><span class="tag"></<span class="name">style</span>></span></span><br><span class="line"><span class="tag"></<span class="name">head</span>></span></span><br><span class="line"><span class="tag"><<span class="name">body</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"test"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">div</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"test1"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">div</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">div</span> <span class="attr">class</span>=<span class="string">"test2"</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">div</span>></span></span><br><span class="line"><span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure></p>
<h4 id="效果"><a href="#效果" class="headerlink" title="效果"></a>效果</h4><p>很酷原理却很简单<br><img src="/pic/attachment.gif" alt=""></p>
<h4 id="兼容性"><a href="#兼容性" class="headerlink" title="兼容性"></a>兼容性</h4><ol>
<li>IE8及更早浏览器不支持CSS3新增local。</li>
<li>Firefox4.0-8.0不支持CSS3新增local。</li>
<li>IE6以下的版本不支持Fixed</li>
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<article id="post-6个让内容垂直居中的方法" class="article article-type-post" itemscope itemprop="blogPost">
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<a class="article-title" href="/2016/01/23/6个让内容垂直居中的方法/">6个让内容垂直居中的方法</a>
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<a class="tag-link" href="/tags/CSS/">CSS</a>, <a class="tag-link" href="/tags/mongoose/">mongoose</a>, <a class="tag-link" href="/tags/垂直/">垂直</a>
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<p>所有的例子Html如下：<br><figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><div class="parent"></span><br><span class="line"> <div class="child">内容垂直居中</div></span><br><span class="line"></div></span><br></pre></td></tr></table></figure></p>
<ol>
<li>使用绝对定位<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line"> * {</span><br><span class="line"> padding: 10px 20px;</span><br><span class="line">}</span><br><span class="line">.parent {</span><br><span class="line"> position: relative;</span><br><span class="line"> height: 200px;</span><br><span class="line"> width: 300px;</span><br><span class="line"> background: #ccc;</span><br><span class="line"> margin-left: auto;</span><br><span class="line"> margin-right: auto;</span><br><span class="line">}</span><br><span class="line">.child {</span><br><span class="line"> position: absolute;</span><br><span class="line"> color: #fff;</span><br><span class="line"> top: 100px;</span><br><span class="line"> line-height: 100px;</span><br><span class="line"> margin-top: -50px;</span><br><span class="line"> background: #333;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>通过调节文字内容的行距和子层的margin-top达到竖直居中的目的</p>
<ol>
<li>使用translateY转换轴<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line"> * {</span><br><span class="line"> padding: 10px 20px;</span><br><span class="line">}</span><br><span class="line">.parent {</span><br><span class="line"> height: 100px;</span><br><span class="line"> background: #ccc;</span><br><span class="line"> color: #fff;</span><br><span class="line"> width: 300px;</span><br><span class="line"> margin-left: auto;</span><br><span class="line"> margin-right: auto;</span><br><span class="line">}</span><br><span class="line">.child {</span><br><span class="line"> text-align: center;</span><br><span class="line"> position: relative;</span><br><span class="line"> top: 50%;</span><br><span class="line"> -webkit-transform: translateY(-50%);</span><br><span class="line"> -o-transform: translateY(-50%);</span><br><span class="line"> transform: translateY(-50%);</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>这种写法对IE版本低于8是不会起作用的。</p>
<ol>
<li>通过padding<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line">* {</span><br><span class="line"> padding: 10px 20px;</span><br><span class="line">}</span><br><span class="line">.parent { </span><br><span class="line"> background: #ccc;</span><br><span class="line"> color: #fff;</span><br><span class="line"> width: 300px;</span><br><span class="line"> margin-left: auto;</span><br><span class="line"> margin-right: auto;</span><br><span class="line">}</span><br><span class="line">.child {</span><br><span class="line"> padding: 10% 50px;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>此写法适用于父，子窗口不固定高度</p>
<ol>
<li>直接使用line-height<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line"> * {</span><br><span class="line"> padding: 10px 20px;</span><br><span class="line">}</span><br><span class="line">.parent { </span><br><span class="line"> background: #ccc;</span><br><span class="line"> color: #fff;</span><br><span class="line"> width: 300px;</span><br><span class="line"> width: 300px;</span><br><span class="line"> margin-left: auto;</span><br><span class="line"> margin-right: auto;</span><br><span class="line">}</span><br><span class="line">.child {</span><br><span class="line"> line-height: 300px;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>很明显这种方法一旦出现2行文字就会有问题</p>
<ol>
<li>使用CSS Table<figure class="highlight plain"><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></pre></td><td class="code"><pre><span class="line"> * {</span><br><span class="line"> padding: 10px 20px;</span><br><span class="line">}</span><br><span class="line">.parent { </span><br><span class="line"> display: table;</span><br><span class="line"> background: #ccc;</span><br><span class="line"> height: 100px;</span><br><span class="line"> color: #fff;</span><br><span class="line"> margin-left: auto;</span><br><span class="line"> margin-right: auto;</span><br><span class="line">}</span><br><span class="line">.child {</span><br><span class="line"> display: table-cell;</span><br><span class="line"> vertical-align: middle;</span><br><span class="line"> padding: 0 30px;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>前方高能！！<br>前方高能！！<br>前方高能！！<br>这是内容垂直居中最好用的方法。</p>
<ol>
<li>使用flexbox<pre><code>* {
padding: 10px 20px;
}
.parent {
display: flex;
align-items: center;
height: 10em;
background: #ccc;
width: 300px;
color: #fff;
margin-left: auto;
margin-right: auto;
}
</code></pre>在父窗口定义flex，并用align-items调整伸缩项目在侧轴的对齐方式。但是flex在各浏览器的兼容性较差。</li>
</ol>
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<article id="post-盒子模型box-sizing" class="article article-type-post" itemscope itemprop="blogPost">
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<h1 itemprop="name">
<a class="article-title" href="/2015/11/22/盒子模型box-sizing/">盒子模型box-sizing</a>
</h1>
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<a href="/2015/11/22/盒子模型box-sizing/">
<time datetime="2015-11-22T06:01:32.000Z" itemprop="datePublished">2015-11-22</time>
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<a class="article-category-link" href="/categories/代码/">代码</a>
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<a class="tag-link" href="/tags/border-box/">border-box</a>, <a class="tag-link" href="/tags/content-box/">content-box</a>, <a class="tag-link" href="/tags/盒子模型/">盒子模型</a>
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<div class="article-entry" itemprop="articleBody">
<p>css盒子模型将DIV的构成比喻成一个盒子。盒子由里装的东西,盒子厚度,盒子内置厚度，和外置距离分别对应DIV元素的内容<code>content</code>，内边距<code>padding</code>，边框<code>border</code>，外边距<code>margin</code>.<br>我们在css中写的width，height具体代表着是content的width和height还是代表着整个Element的width或者height呢？这个不确定的话，整个网页的布局无从把握。<br><img src="/pic/hezi/box-sizing.jpg" alt="此处输入图片的描述"></p>
<h3 id="box-sizing属性"><a href="#box-sizing属性" class="headerlink" title="box-sizing属性"></a>box-sizing属性</h3><p>box-sizing属性是决定盒子模型的属性</p>
<table>
<thead>
<tr>
<th>Name</th>
<th style="text-align:center">box-sizing</th>
</tr>
</thead>
<tbody>
<tr>
<td>取值</td>
<td style="text-align:center">content-box / border-box</td>
</tr>
<tr>
<td>初始</td>
<td style="text-align:center">content-box</td>
</tr>
<tr>
<td>应用</td>
<td style="text-align:center">所有含有width和height的元素</td>
</tr>
<tr>
<td>继承</td>
<td style="text-align:center">不可继承</td>
</tr>
<tr>
<td>动作</td>