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Graphic and text code introduction to the knowledge of moving tools implemented by Nodejs

黄舟
Release: 2017-07-24 15:56:53
Original
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这篇文章 主要学习这两个模块的使用:

request-promise-native : 
cheerio :
 

nodejs有个request模块,专门处理这些网络请求方面的。 就像.NET也有request,webclient,httpclient啥的。。。

nodejs的request使用方法在这,自己查一下: 

而我喜欢用async和await的写法,因此我还引入了request-promise-native 模块,   ,这个就相当于.NET中httpclient吧。

好了背景就讲这么多,我们就开始简单的使用request-promise-native,进行模拟提交。

我用淘宝镜像安装模块,会比较快比较快一些,注册淘宝镜像方式:

npm install -g cnpm --registry=
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然安装模块:

cnpm install --save request
cnpm install --save request-promise-native
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我们登陆后 ,尝试发一篇文章,然我们分析一下提交的东西:

主要是 Cookie以及 FormData。

好了,然后我们写一个 cnblogs,来处理提交,代码:

const request = require('request-promise-native');
// const proxy = 'http://127.0.0.1:8888';
const url = 'https://i.cnblogs.com/EditPosts.aspx?opt=1';
class Cnblogs {
  static async save({ title, content, postdate }) {
    let response = await request({
      url: url,
      method: 'POST',
      headers: {
        Cookie: '[隐私隐私隐私]',
      },
      form: {
        __VIEWSTATE: '===========',
        __VIEWSTATEGENERATOR: 'FE27D343',
        Editor$Edit$txbTitle: title,
        Editor$Edit$EditorBody: `<p style="color: red; font-weight: bold;">原文发布时间为:${postdate} —— 来源于本人的百度文章 [由搬家工具导入]</p>${content}`,
        Editor$Edit$APOptions$Advancedpanel1$cklCategories$0: &#39;1031596&#39;,
        Editor$Edit$Advanced$ckbPublished: &#39;on&#39;,
        Editor$Edit$Advanced$chkDisplayHomePage: &#39;on&#39;,
        Editor$Edit$Advanced$chkComments: &#39;on&#39;,
        Editor$Edit$Advanced$chkMainSyndication: &#39;on&#39;,
        Editor$Edit$lkbPost: &#39;发布&#39;
      }
    });
    return response;
  }
}

module.exports = Cnblogs;
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嗯,我们建立一个 app.js 调用一下测试吧:
const cnblogs = require(&#39;./cnblogs&#39;);

const main = async () => {
  try {
    let response = await cnblogs.save(&#39;测试&#39;,&#39;测试内容&#39;,&#39;2018-01-01&#39;);
    console.log(response);
  } catch (err) {
    console.error(&#39;[ERROR]&#39;, err);
  }
};

main();
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执行node app,我们发现, 导入成功了。。。。
我用类似的方法 从自己百度文章抓取文章,然后调用 cnblogs.save(); 进行导入:

 

抓取文章也是很简单的,为了方便从response查找dom,我们可以用这个模块 cheerio :  , 就类似于我们做.NET的时候会用 HtmlAgilityPack 来查找dom一样。

cheerio 可以去看看,他的语法跟jquery一样,使用起来很方便。

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