Pymongo/bson:将python.cursor.Cursor对象转换为可序列化/JSON对象 [英] Pymongo/bson: Convert python.cursor.Cursor object to serializable/JSON object

问题描述

MongoDb和Python(webapp2)的新功能.因此，我正在从 mongodb 数据库中获取一些数据.但是我无法对返回的数据使用json.dumps.这是我的代码:

New to MongoDb and Python (webapp2). So, I was fetching some data from a mongodb database. But I was unable to use json.dumps on the returned data. Here's my code:

exchangedata = db.Stock_Master.find({"Country": "PHILIPPINES"}, {"_id" : 0})        
self.response.write(json.dumps(exchangedata)) 

这会引发错误:

TypeError: pymongo.cursor.Cursor object at 0x7fcd51230290 is not JSON serializable

exchangedata的类型是pymongo.cursor.Cursor.如何将其转换为json对象?

The type of exchangedata is pymongo.cursor.Cursor. How can I convert it into a json object?

推荐答案

使用来自 bson.json_util :

>>> c = pymongo.MongoClient()
>>> c.test.test.count()
5
>>> from bson.json_util import dumps
>>> dumps(c.test.test.find())
'[{"_id": {"$oid": "555cb3a7fa5bd85b81d5a624"}}, {"_id": {"$oid": "555cb3a7fa5bd85b81d5a625"}}, {"_id": {"$oid": "555cb3a7fa5bd85b81d5a626"}}, {"_id": {"$oid": "555cb3a7fa5bd85b81d5a627"}}, {"_id": {"$oid": "555cb3a7fa5bd85b81d5a628"}}]'

这篇关于Pymongo/bson:将python.cursor.Cursor对象转换为可序列化/JSON对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！