django通过fdfs上传，下载文件

1.继承django的Storage类，重写open，save和exist方法

from django.core.files.storage import Storage
from fdfs_client.client import Fdfs_client

class FDFSStorage(Storage):
    def open(self, name, mode=\'rb\'):
        pass

    def save(self, name, content, max_length=None):

        client = Fdfs_client(\'./utils/fdfs/client.conf\')

        res = client.upload_by_buffer(content.read())

        if res.get(\'Status\') != \'Upload seccessed\':
            raise Exception(\'上传文件到fdfs服务器失败\')

        filename = res.get(\'Remote file_id\')

        return filename

    def exists(self, name):
        return False

　　　　def url(self, name):
　　　　return \'http://192.168.5.135:8888/\'+name