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爬虫
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创建爬虫
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自定义爬虫
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可配置爬虫
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运行爬虫
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统计数据
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任务
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下载结果
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架构
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<!-- Title -->
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<h1>
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<a href="../.." >自定义爬虫</a>
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</h1>
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<section class="normal markdown-section">
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<h2 id="自定义爬虫">自定义爬虫</h2>
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<p>自定义爬虫是指用户可以添加的任何语言任何框架的爬虫，高度自定义化。当用户添加好自定义爬虫之后，Crawlab就可以将其集成到爬虫管理的系统中来。</p>
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<p>自定义爬虫的添加有两种方式：</p>
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<ol>
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<li>通过Web界面上传爬虫</li>
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<li>通过创建项目目录</li>
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</ol>
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<h3 id="通过web界面上传">通过Web界面上传</h3>
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<p>在通过Web界面上传之前，需要将爬虫项目文件打包成<code>zip</code>格式。</p>
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<p><img src="https://crawlab.oss-cn-hangzhou.aliyuncs.com/gitbook/spider-list.png" alt=""></p>
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<p>然后，在<code>侧边栏</code>点击<code>爬虫</code>导航至<code>爬虫列表</code>，点击<code>添加爬虫</code>按钮，选择<code>自定义爬虫</code>，点击<code>上传</code>按钮，选择刚刚打包好的<code>zip</code>文件。上传成功后，<code>爬虫列表</code>中会出现新添加的自定义爬虫。这样就算添加好了。</p>
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<p>这个方式稍微有些繁琐，但是对于无法轻松获取服务器的读写权限时是非常有用的，适合在生产环境上使用。</p>
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<h3 id="通过添加项目目录">通过添加项目目录</h3>
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<p>Crawlab会自动发现<code>PROJECT_SOURCE_FILE_FOLDER</code>目录下的所有爬虫目录，并将这些目录生成自定义爬虫并集成到Crawlab中。因此，将爬虫项目目录拷贝到<code>PROJECT_SOURCE_FILE_FOLDER</code>目录下，就可以添加一个爬虫了。</p>
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<p>这种方式非常方便，但是需要获得主机服务器的读写权限，因而比较适合在开发环境上采用。</p>
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<h3 id="配置爬虫">配置爬虫</h3>
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<p>在定义爬虫中，我们需要配置一下<code>执行命令</code>（运行爬虫时后台执行的<code>shell</code>命令）和<code>结果集</code>（通过<code>CRAWLAB_COLLECTION</code>传递给爬虫程序，爬虫程序存储结果的地方），然后点击<code>保存</code>按钮保存爬虫信息。</p>
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<p><img src="https://crawlab.oss-cn-hangzhou.aliyuncs.com/gitbook/spider-detail-overview.png" alt=""></p>
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<p>接下来，我们就可以部署、运行自定义爬虫了。</p>
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