4. SEO optimization--Sitemap site map

Sitemap site map, that is, the list of web pages on the website:
1) Help Baidu find and understand all web pages on the website;
2) You can use Sitemap to provide website related information, such as update date, update frequency, etc.;
Sitemap format:
1 ) Txt text format:
List the link addresses that need to be submitted to Baidu in the txt text. Please pay attention to the submitted addresses:
① Each line of the text file must have a URL, and the URL must not have line breaks, other symbols and Chinese;
② The URL must Complete, starting with http;
③Each text contains up to 50,000 URLs and less than 10MB. If there are more than 50,000, the
list can be divided into multiple text files;
④Text files need to use UTF-8 or GBK encoding;
2) xml format:
single xml data format:

<?xml version="1.0" encoding="utf-8"?>
<!-- XML 文件需以 utf-8 编码-->
<urlset>
<!--必填标签-->
    <url>
        <!--必填标签,这是具体某一个链接的定义入口，每一条数据都要用<url>和</url>包含在里面，这是必须的 -->
        <loc>http://www.yoursite.com/yoursite.html</loc>
        <!--必填,URL 链接地址,长度不得超过 256 字节-->
        <lastmod>2009-12-14</lastmod>
        <!--可以不提交该标签,用来指定该链接的最后更新时间-->
        <changefreq>daily</changefreq>
        <!--可以不提交该标签,用这个标签告诉此链接可能会出现的更新频率 -->
        <priority>0.8</priority>
        <!--可以不提交该标签,用来指定此链接相对于其他链接的优先权比值，此值定于 0.0-1.0 之间-->
    </url>
    <url>
        <loc>http://www.yoursite.com/yoursite2.html</loc>
        <lastmod>2010-05-01</lastmod>
        <changefreq>daily</changefreq>
        <priority>0.8</priority>
    </url>
</urlset>

 上面向百度提交了一个http://www.yoursite.com/yoursite.html链接；
 若有多条url提交，重复<url></url>之间的片段；

3) Sitemap index format:
If you need to submit a large number of Sitemap files, you can list them in the Sitemap index file and submit the index file
as follows:

<?xml version="1.0" encoding="utf-8"?>
<!-- XML 文件需以 utf-8 编码-->
<sitemapindex>
<!--必填，以 <sitemapindex> 开始标记作为开始，以 </sitemapindex> 结束标记作为结束-->
    <sitemap>
        <!--必填，以<sitemap>标签提交一个子 sitemap 文件-->
        <loc>http://example.com/ext/xmlsitemap/add/201201/index_20120106.xml</loc>
        <!--必填，识别 sitemap 的位置-->
        <lastmod>2009-12-14</lastmod>
        <!--选填，识别相对 sitemap 文件的修改时间-->
    </sitemap>

    <!--必填，标签闭合-->

</sitemapindex>

<!--必填，标签闭合-->

 有多个Sitemap，按照上述格式重复<sitemap></sitemap>之间的片断；

Mobile Sitemap protocol:
used to submit URLs to mobile search and search, add the following tags:
1) mobile:mobile/: mobile web page
2) <mobile:mobile type=“mobile”/>: mobile web page
3) <mobile:mobile type=“autoadapt”/>: self-adapted webpage, suitable for the same URL page, and the
display situation will change with different devices.
The following examples:

<?xml version="1.0" encoding="utf-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:mobile="http://www.baidu.com/schemas/sitemap-mobile/1/">  
 <!-- 向百度移动搜索提交--> 
  <url> 
    <loc>http://m.example.com/index.html</loc>  
    <mobile:mobile type="mobile"/>  
    <lastmod>2009-12-14</lastmod>  
    <changefreq>daily</changefreq>  
    <priority>0.8</priority> 
  </url>  
  <!-- 向百度pc搜索提交--> 
  <url> 
    <loc>http://www.example.com/index.html</loc>  
    <lastmod>2009-12-14</lastmod>  
    <changefreq>daily</changefreq>  
    <priority>0.8</priority> 
  </url>  
  <!-- 向百度移动和pc搜索都提交--> 
  <url> 
    <loc>http://www.example.com/autoadapt.html</loc>  
    <mobile:mobile type="autoadapt"/>  
    <lastmod>2009-12-14</lastmod>  
    <changefreq>daily</changefreq>  
    <priority>0.8</priority> 
  </url> 
</urlset>

Note:
1) If the main domain of the website is verified, then the Sitemap file can include all the URLs under the main domain of the website;
2) If the verified www.example.com, you can only submit the URL of the verified website, not
The URLs of other websites appear .

4. SEO optimization--Sitemap site map

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