# Unicode Character Database
# Date: 2020-03-06, 20:34:00 GMT [KW]
# © 2020 Unicode®, Inc.
# Unicode and the Unicode Logo are registered trademarks of Unicode, Inc. in the U.S. and other countries.
# For terms of use, see https://www.unicode.org/terms_of_use.html
#
# For documentation, see the following:
# NamesList.html
# UAX #38, "Unicode Han Database (Unihan)"
# UAX #44, "Unicode Character Database"
# UTS #51, "Unicode Emoji"
#
# The UAXes and UTS #51 can be accessed at https://www.unicode.org/versions/Unicode13.0.0/
This directory contains the final data files
for the Unicode Character Database, for Version 13.0.0 of the Unicode Standard.
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爬虫工具-字体反爬工具
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共199个文件
xml:148个
txt:20个
dat:6个
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2024-04-25
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温馨提示
在爬虫中,字体反爬工具是一种常见的反爬手段,用于防止爬虫程序通过解析网页中的字体文件来获取真实的文本内容。字体反爬工具的原理是将网页中的文本内容使用特定的字体进行编码,然后通过CSS样式将编码后的文本显示在网页上。这样,即使爬虫程序成功获取到网页源代码,也无法直接解析出正确的文本内容。 为了应对字体反爬工具,爬虫程序需要进行相应的处理。以下是一些常见的应对策略: 1. 字体映射表:爬虫程序可以通过分析网页中的CSS样式和字体文件,构建出字体映射表。字体映射表记录了字符编码与实际文本之间的对应关系,可以用于解码网页中的文本内容。 2. 字体文件下载:爬虫程序可以模拟浏览器行为,下载网页中使用的字体文件。然后通过解析字体文件,获取字符编码与实际文本之间的对应关系。 3. 字体替换:爬虫程序可以将网页中使用的字体文件替换为已知的字体文件,从而绕过字体反爬工具。这需要事先收集一些常见的字体文件,并将其保存在本地供爬虫程序使用。 4. OCR识别:如果以上方法都无法绕过字体反爬工具,爬虫程序可以使用OCR(光学字符识别)技术,将网页中的图片转换为文本。然后再对文本进行处理和分析。
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