擅长:python、mysql、java
<p>你可以使用谷歌应用引擎<a href="http://code.google.com/appengine/docs/python/urlfetch/" rel="nofollow">URL Fetch</a>API。<br/>
<a href="http://code.google.com/appengine/docs/python/urlfetch/fetchfunction.html" rel="nofollow">fetch()</a>函数返回包含HTTP状态代码的<a href="http://code.google.com/appengine/docs/python/urlfetch/responseobjects.html" rel="nofollow">Response object</a>。在</p>
<p>只需获取url并使用以下命令检查状态:</p>
<pre><code>from google.appengine.api import urlfetch
def is_down(url):
result = urlfetch.fetch(url, method = urlfetch.HEAD)
return result.status_code != 200
</code></pre>