使用pymongo将JSON导入mongoDB [英] importing JSON to mongoDB using pymongo
问题描述
我正在尝试使用pymongo模块导入从URL中提取的JSON文件，并将其按原样发送到mongoDB.
i am trying to import a JSON file i pull from a URL and send it to mongoDB as is, using the pymongo module.
我有以下代码
#!/usr/bin/env python
import sys, urllib2, json, pymongo
from pymongo import MongoClient
myurl = "https://gist.githubusercontent.com/border/775526/raw/b921df18ba00262ab5bba8cadb3c178e1f7748f7/config.json"
response = urllib2.urlopen(myurl)
data = response.read()
connection = MongoClient('mongodb://user:password@localhost.com:27017/database')
connection.database_names()
db = connection.database
posts = db.posts
post_id = posts.insert_many(data).inserted_id
执行此操作后，出现此错误 引发TypeError(文档必须是非空列表") TypeError:文档必须为非空列表
upon executing this, i get this error raise TypeError("documents must be a non-empty list") TypeError: documents must be a non-empty list
理想情况下，我只希望能够从URL中提取json并更新mongoDB，因为此json文件每周都会更新. 谢谢
ideally, i want to just be able to pull the json from the url and update the mongoDB as this json file will be updated every week. Thanks
推荐答案
您需要将JSON转换为Python对象，然后PyMongo会将其转换为BSON以发送到MongoDB.要将JSON转换为Python对象，请使用PyMongo随附的"bson.json_util"模块:
You need to convert JSON to Python objects, which PyMongo will then convert to BSON for sending to MongoDB. To convert JSON to Python objects use the "bson.json_util" module included with PyMongo:
from bson import json_util
data = json_util.loads(response.read())
标准的Python json.loads()函数也可以使用，但是PyMongo的json_util.loads()可以更好地处理一些MongoDB特定的细节.
The standard Python json.loads() function works, too, but PyMongo's json_util.loads() handles some MongoDB-specific details better.
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