django 下载返回文件流

class downMonth(View): 
    def get(self,request):
        strTime1 = request.GET.get('time')
        filepath = "{}/searchText/{}.zip".format( settings.base_DIR ,strTime1) # 文件所在位置
        file = open(filepath, 'rb')
        response = FileResponse(file)
        response['Content-Disposition'] = 'attachment;filename="{}.{}"'.format(strTime1, "zip") # 文件名称和类型
        return response