Hexo 文章链接默认的生成规则是：:year/:month/:day/:title
一旦我们修改了时间或者文章标题，那么就会导致链接改变从而造成分享出去的页面404
解决办法是通过安装永久链接插件来解决这个问题。

安装插件

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npm install hexo-abbrlink --save

修改全局配置文件

_config.yml修改如下:

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## permalink: :year/:month/:day/:title/
permalink: posts/:abbrlink.html  ## 此处可以自己设置

并增加以下内容：

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## abbrlink config
abbrlink:
  alg: crc32      #support crc16(default) and crc32 进制
  rep: hex        #support dec(default) and hex  算法
  drafts: false   #(true)Process draft,(false)Do not process draft. false(default) 
  ## Generate categories from directory-tree
  ## depth: the max_depth of directory-tree you want to generate, should > 0
  auto_category:
     enable: true  #true(default)
     depth:        #3(default)
     over_write: false 
  auto_title: false #enable auto title, it can auto fill the title by path
  auto_date: false #enable auto date, it can auto fill the date by time today
  force: false #enable force mode,in this mode, the plugin will ignore the cache, and calc the abbrlink for every post even it already had abbrlink.

这样就大功告成的🎉，hexo s 查看效果吧!!!