如何使用pymongo將小png圖像保存到Mongodb數據庫

Question

我想將png文件保存到我的Mongodb數據庫中。 我正在嘗試使用這樣的代碼：

    with open(SCREENCAP_FILE_NAME, 'rb') as f:
    page_info_tuple = {
        "page_hash": _page_hash,
        "ativity_name": _activity_name,
        "screen_shot": f
    }
    Mongo.coll_pageinfo.insert_one(page_info_tuple)

但是，它給了我

bson.errors.InvalidDocument：無法編碼對象：打開文件“ screen.png”，模式為“ rb”，位於0x109d3ced0

Answer 1

我通過使用如下代碼解決了這個問題：

from bson import Binary

with open(SCREENCAP_FILE_NAME, mode='rb') as f:
    page_info_tuple = {
        "page_hash": _page_hash,
        "ativity_name": _activity_name,
        "screen_shot": Binary(f.read())
    }
    Mongo.coll_pageinfo.insert_one(page_info_tuple)