擅长:python、mysql、java
<p>在web2py中,不能简单地返回file对象,而必须使用<a href="http://web2py.com/books/default/chapter/29/04/the-core#response" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code> import cStringIO
file = cStringIO.StringIO(row.Picture)
return response.stream(file)
</code></pre>
<p>您还可以考虑使用web2pydal并利用其内置的存储和检索文件的功能(请参见<a href="http://web2py.com/books/default/chapter/29/07/forms-and-validators?search=uploads#SQLFORM-and-uploads" rel="nofollow">here</a>和<a href="http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#More-on-uploads" rel="nofollow">here</a>)。在</p>