上传图片文件

class Upload(webapp.RequestHandler):
    url = '/htm/upload.html'

    def back(self):
        return self.redirect(self.url)

    def post(self):
        data = self.request.get('file1')
        if not data or len(data) == 0:
            return self.back();
        field = self.request.body_file.vars['file1'];
        filename = field.filename
        contentType = field.type
        if contentType.find('image') == -1:
            return self.back();
        img = Image()
        img.fileName = filename
        img.contentType = contentType
        img.fileData = db.Blob(data)
        img.put()
        s = "filename=%s<br />contentType=%s<br />id=%s" % (filename, contentType, img.key().id())
        YiShou.showMsg(self, s, self.url)