七牛是个好东西
免费10G空间10G下载流量10w上传请求100w下载请求 自带CDN和图片处理 对于个人用户和创业公司来说是个很好的平台
本文主要是解决 服务器端请求七牛对网络某文件进行保存这一业务需求
这里是七牛文章中对Fetch API的说明。写的有点复杂，不过用Python sdk比较简单
七牛的Python sdk支持 pip 和 easy_install 安装，包名是 qiniu 即：
pip install qiniu esay_install qiniu
对于SAE用户，安装好sae python本地环境后在项目目录（就是有config.yaml 和 index.wsgi的目录）运行：
saecloud install qiniu本地环境就会将七牛SDK下载到项目目录的site-packages文件夹中。
修改index.wsgi文件，添加如下代码到文件开头
import os import sys root = os.path.dirname(__file__) sys.path.insert(0, os.path.join(root, 'site-packages'))这样就安装完毕了
def qiniufetch(url,bucket,filename):
"""调用七牛的fetch API 将url的图片存储到七牛"""
from base64 import urlsafe_b64encode as b64e
from qiniu.auth import digest
access_key = "****************************************"
secret_key = "****************************************"
encoded_url = b64e(url)
dest_entry = "%s:%s" % (bucket, filename)
encoded_entry = b64e(dest_entry.encode('utf-8'))
api_host = "iovip.qbox.me"
api_path = "/fetch/%s/to/%s" % (encoded_url, encoded_entry)
mac = digest.Mac(access=access_key, secret=secret_key)
client = digest.Client(host=api_host, mac=mac)
ret, err = client.call(path=api_path)
if err is not None:
print "Fetch image file\"%s\" failed" % url
print err
return None
else:
print "Fetch \"%s\" to qiniu \"%s\" success!" % (url,dest_entry)
return "http://%s.qiniudn.com/%s" % (bucket,urllib.quote(filename.encode('utf-8')))
if info['avatr_src']:
if avatar_urlfactory:
info['avatr_src'] = avatar_urlfactory(info['avatr_src'])
if saveto == 'qiniu':
filename = "%s/%s-%s.%s" % (prefix, info['name'], todaystr, info['avatr_src'].split('.')[-1])
info["avatar"] = qiniufetch(info['avatr_src'],'akb-member',filename)
elif saveto == 'storage':
filename = "%s/%s-%s.%s" % (prefix, info['name'], todaystr, info['avatr_src'].split('.')[-1])
info["avatar"] = retrieve(info['avatr_src'],'avatar',filename)原文地址：http://blog.csdn.net/cugbabybear/article/details/37955891
