Node做网页爬虫时遇到的Html entites对象造成乱码_html/css_WEB-ITnose
Node做网页爬虫时遇到的Html entites对象造成乱码
就是文字内容是这种货:
��һҳ
尝试用iconv-lite模块的decode去转码,但是失败了。
这种叫HTML Entities,可以借助一些模块来转换,比如,html-entities Github。
HTML Entities是什么请参照如下网址:
http://www.w3school.com.cn/html/html_entities.asp
html-entities的使用方法如下
var Entities = require('html-entities').XmlEntities;entities = new Entities();var str = '��һҳ';console.log(entities.decode(str));
在爬虫的请求上也要调整:
1 var headers = { 2 'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.65 Safari/537.36'3 }
加上简单的伪装
使用Node爬的话,应该会用cheerio,在接受request返回的网页内容时,还是经过iconv的转换,再用cheerio
1 var html = iconv.decode(body, 'gbk')2 var $ = cheerio.load(html, {decodeEntities: false})
如果你不知道抓取的网页的编码的话,请使用:
res.headers['content-type']
根据返回的编码格式进行处理即可
关于网页内容转码和乱码的深层分析可以阅读如下博文:
http://www.dewen.io/q/13755
http://www.99css.com/nodejs-request-chinese-encoding/
这个帅哥的分析也很有趣
http://blog.vichamp.com/program/2015/07/04/Common-Messy-Code/

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati

HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.

The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159

The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex

The article discusses the viewport meta tag, essential for responsive web design on mobile devices. It explains how proper use ensures optimal content scaling and user interaction, while misuse can lead to design and accessibility issues.

The article discusses the <iframe> tag's purpose in embedding external content into webpages, its common uses, security risks, and alternatives like object tags and APIs.

HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.

AnexampleofastartingtaginHTMLis,whichbeginsaparagraph.StartingtagsareessentialinHTMLastheyinitiateelements,definetheirtypes,andarecrucialforstructuringwebpagesandconstructingtheDOM.
