折腾：
【已解决】CentOS服务器中搭建Python的Flask的REST API
期间，接着折腾。
去尝试连接远程的MongoDB，并且连接后，去查询gridfs中是否有想要的文件名的数据并返回
flask mongodb
Flask-PyMongo — Flask-PyMongo 0.5.1 documentation
Flask-MongoAlchemy
类似于SQLAlchemy
Flask-MongoKit
PyMongo
Flask PyMongo 中文文档 | Flask 扩展文档汇总
MongoKit in Flask — Flask Documentation (0.12)
PyMongo 3.6.1 Documentation — PyMongo 3.6.1 documentation
dcrosta/flask-pymongo: PyMongo support for Flask applications
决定用：flask-pymongo
先去安装：
<code>➜ robotDemo pipenv install flask-pymongo Installing flask-pymongo… Collecting flask-pymongo Downloading https://files.pythonhosted.org/packages/fa/71/ab920741dedd605ef4adbd57d0c7d9f43a6b6fe4068604fffbc6f64b2c9c/Flask_PyMongo-0.5.1-py3-none-any.whl Requirement already satisfied: Flask>=0.8 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from flask-pymongo) (0.12.2) Collecting PyMongo>=2.5 (from flask-pymongo) Downloading https://files.pythonhosted.org/packages/5c/7f/1f7240883ec3fa768d7e066c9cbd42ceb42d699ba1a0fb9d231c098a542d/pymongo-3.6.1-cp36-cp36m-macosx_10_6_intel.whl (316kB) Requirement already satisfied: click>=2.0 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from Flask>=0.8->flask-pymongo) (6.7) Requirement already satisfied: itsdangerous>=0.21 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from Flask>=0.8->flask-pymongo) (0.24) Requirement already satisfied: Jinja2>=2.4 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from Flask>=0.8->flask-pymongo) (2.10) Requirement already satisfied: Werkzeug>=0.7 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from Flask>=0.8->flask-pymongo) (0.14.1) Requirement already satisfied: MarkupSafe>=0.23 in /Users/crifan/.local/share/virtualenvs/robotDemo-HXjMJQEQ/lib/python3.6/site-packages (from Jinja2>=2.4->Flask>=0.8->flask-pymongo) (1.0) Installing collected packages: PyMongo, flask-pymongo Successfully installed PyMongo-3.6.1 flask-pymongo-0.5.1 Adding flask-pymongo to Pipfile's [packages]… Pipfile.lock (09e966) out of date, updating to (36c54e)… Locking [dev-packages] dependencies… Locking [packages] dependencies… Updated Pipfile.lock (36c54e)! Installing dependencies from Pipfile.lock (36c54e)… 🐍 ▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉▉ 12/12 — 00:00:03 To activate this project's virtualenv, run the following: $ pipenv shell ➜ robotDemo pipenv graph Flask-PyMongo==0.5.1 - Flask [required: >=0.8, installed: 0.12.2] - click [required: >=2.0, installed: 6.7] - itsdangerous [required: >=0.21, installed: 0.24] - Jinja2 [required: >=2.4, installed: 2.10] - MarkupSafe [required: >=0.23, installed: 1.0] - Werkzeug [required: >=0.7, installed: 0.14.1] - PyMongo [required: >=2.5, installed: 3.6.1] Flask-RESTful==0.3.6 - aniso8601 [required: >=0.82, installed: 3.0.0] - Flask [required: >=0.8, installed: 0.12.2] - click [required: >=2.0, installed: 6.7] - itsdangerous [required: >=0.21, installed: 0.24] - Jinja2 [required: >=2.4, installed: 2.10] - MarkupSafe [required: >=0.23, installed: 1.0] - Werkzeug [required: >=0.7, installed: 0.14.1] - pytz [required: Any, installed: 2018.4] - six [required: >=1.3.0, installed: 1.11.0] </code>
然后去写代码
结果出错：
【已解决】Flask-PyMongo出错：RuntimeError Working outside of application context
然后继续去find对应的gridfs中的文件：
【规避解决】Flask-PyMongo中如何查询gridfs中的文件
最后是去用代码：
<code>from flask import Flask
from flask import jsonify
from flask_restful import Resource, Api, reqparse
import logging
from logging.handlers import RotatingFileHandler
# from flask_pymongo import PyMongo
from gridfs import GridFS
from pymongo import MongoClient
import re
app = Flask(__name__)
FLASK_APP = "RobotQA"
LOG_FILE_FILENAME = "logs/" + FLASK_APP + ".log"
LOG_FORMAT = "[%(asctime)s %(levelname)s %(filename)s:%(lineno)d %(funcName)s] %(message)s"
app.config['LOG_FILE_FILENAME'] = LOG_FILE_FILENAME
app.config["LOG_FORMAT"] = LOG_FORMAT
logFormatterStr = app.config["LOG_FORMAT"]
logFormatter = logging.Formatter(logFormatterStr)
fileHandler = RotatingFileHandler(
app.config['LOG_FILE_FILENAME'],
maxBytes=2*1024*1024,
backupCount=3,
encoding="UTF-8")
fileHandler.setLevel(logging.DEBUG)
fileHandler.setFormatter(logFormatter)
app.logger.addHandler(fileHandler)
streamHandler = logging.StreamHandler()
streamHandler.setFormatter(logFormatter)
streamHandler.setLevel(logging.INFO)
app.logger.addHandler(streamHandler)
app.logger.setLevel(logging.DEBUG) # set root log level
log = app.logger
log.debug("debug: app=%s", app)
api = Api(app)
log.info("api=%s", api)
# Flask-PyMongo NOT work: gridfs can NOT find files
# app.config.update(
# MONGO_HOST='x.x.x.x',
# MONGO_PORT=12345,
# MONGO_USERNAME='gridfs',
# MONGO_PASSWORD=‘xxx',
# MONGO_DBNAME='gridfs'
# )
# flaskPymongo = PyMongo(app)
# log.info("flaskPymongo=%s", flaskPymongo)
# purePymongo = MongoClient(mongodbUri)
purePymongo = MongoClient(
host="x.x.x.x",
port=12345,
username="gridfs",
password=“xxx",
authSource="gridfs"
)
log.info("purePymongo=%s", purePymongo)
# Pure PyMongo
gridfsDb = purePymongo.gridfs # Database(MongoClient(host=['x.x.x.x:12345'], document_class=dict, tz_aware=False, connect=True, authsource='gridfs'), 'gridfs')
logging.info("gridfsDb=%s", gridfsDb)
fsCollection = GridFS(gridfsDb) # <gridfs.GridFS object at 0x1107b2390>
logging.info("fsCollection=%s", fsCollection)
class RobotAPI(Resource):
def get(self):
respDict = {
"code": 200,
"message": "generate answer ok",
"data": {
"answer": "None",
"audio": {}
}
}
parser = reqparse.RequestParser()
parser.add_argument('q', type=str, help="input question") # play a Christmas song
log.info("parser=%s", parser)
parsedArgs = parser.parse_args() #{'q': 'play a sleep song'}
log.info("parsedArgs=%s", parsedArgs)
if not parsedArgs:
respDict["data"]["answer"] = "Can not recognize question"
return jsonify(respDict)
q = parsedArgs["q"]
log.info("q=%s", q)
if not q:
respDict["data"]["answer"] = "Can not recognize parameter q"
return jsonify(respDict)
foundSongName = re.search("play a (?P<songName>.+?) song", q)
log.info("foundSongName=%s", foundSongName)
if not foundSongName:
respDict["data"]["answer"] = "Can not recognize song name"
return jsonify(respDict)
songName = foundSongName.group("songName")
log.info("songName=%s", songName)
# # Flask-PyMongo
# mongoDb = flaskPymongo.db #Database(MongoClient(host=['x.x.x.x:12345'], document_class=dict, tz_aware=True, connect=True, replicaset=None), 'gridfs')
# log.info("mongoDb=%s", mongoDb)
# gridfsDb = mongoDb.gridfs #Collection(Database(MongoClient(host=['x.x.x.x:12345'], document_class=dict, tz_aware=True, connect=True, replicaset=None), 'gridfs'), 'gridfs')
# log.info("gridfsDb=%s", gridfsDb)
# fsCollection = gridfsDb.fs #Collection(Database(MongoClient(host=['x.x.x.x:12345'], document_class=dict, tz_aware=True, connect=True, replicaset=None), 'gridfs'), 'gridfs.fs')
# log.info("fsCollection=%s", fsCollection)
# filesCollection = fsCollection.files # Collection(Database(MongoClient(host=['x.x.x.x:12345'], document_class=dict, tz_aware=True, connect=True, replicaset=None), 'gridfs'), 'gridfs.fs.files')
# log.info("filesCollection=%s", filesCollection)
# fsFindOne = fsCollection.find_one() # <gridfs.grid_file.GridOut object at 0x110a87fd0>
# log.info("fsFindOne=%s", fsFindOne)
# gridFineOne = gridfsDb.find_one() #
# log.info("gridFineOne=%s", gridFineOne)
#
# filesFindOne = filesCollection.find_one()
# log.info("filesFindOne=%s", filesFindOne)
filenameRegex = re.compile(songName, re.IGNORECASE)
log.info("filenameRegex=%s", filenameRegex)
# findFileCursor = gridfsDb.fs.find({"filename": findRegex})
# findFileCursor = gridfsDb.fs.find({"filename": {"$regex": findRegex, "$options": "i"}})
# findFileCursor = fsCollection.find({"filename": {"$regex": "sleep"}})
# findFileCursor = fsCollection.find({"filename": {"$regex": "sleep", "$options": "i"}})
findFileCursor = fsCollection.find({"filename": {"$regex": filenameRegex, "$options": "i"}})
log.info("findFileCursor=%s", findFileCursor)
findFileCount = findFileCursor.count()
log.info("findFileCount=%s", findFileCount)
if findFileCount <= 0:
respDict["data"]["answer"] = "Can not found any file for name %s" % (songName)
return jsonify(respDict)
lastFoundAudio = None
for curIdx, eachFile in enumerate(findFileCursor):
curNum = curIdx + 1
log.info("[%d] contentType=%s, filename=%s", curNum, eachFile.contentType, eachFile.filename)
if re.match("audio/", eachFile.contentType):
lastFoundAudio = eachFile
if not lastFoundAudio:
respDict["data"]["answer"] = "Found file but not found audio song"
return jsonify(respDict)
respDict["data"] = {
"answer": "Now will play a %s song %s" % (songName, lastFoundAudio.filename),
"audio": {
"contentType": lastFoundAudio.contentType,
"name": lastFoundAudio.filename,
"url": "http://x.x.x.x/%s" % (lastFoundAudio.filename)
}
}
return jsonify(respDict)
api.add_resource(RobotAPI, '/qa', endpoint='qa')
if __name__ == "__main__":
# app.debug = True
app.run()
</code>实现了想要的效果：
输入一段文字，格式是：
play a xxx song
然后内部连接mongo去find到对应的audio文件，并返回对应的信息：
期间还打印出其他的搜到的文件：
