** im使用flask开发此api，“ /”路由运行正常，但注册路由未运行并给出500INTERNAL SERVER ERROR
我尝试了这个https://pythonexamples.org/pymongo-errors-serverselectiontimeouterror/[solution][1] 根据这篇文章，我检查了mongod是否运行，但是我的mongod没有运行。我使用的端口是标准的27017端口。
i感谢您的帮助或指导 谢谢。 **
**堆栈跟踪如下**
**我的app.py文件遵循**
from flask import Flask, jsonify, request
from flask_restful import Api, Resource
from pymongo import MongoClient
import bcrypt
app = Flask(__name__)
api = Api(app)
client = MongoClient("mongodb://db:27017")
db = client.MoneyManagementDB
users = db["Users"]
def UserExist(username):
if users.find({"Username":username}).count() == 0:
return False
else:
return True
class Register(Resource):
def post(self):
#Step 1 is to get posted data by the user
postedData = request.get_json(force=True)
#Get the data
username = postedData["username"]
password = postedData["password"]
email = postedData["email"]
if UserExist(username):
retJson = {
'status':301,
'msg': 'Invalid Username'
}
return jsonify(retJson)
hashed_pw = bcrypt.hashpw(password.encode('utf8'), bcrypt.gensalt())
#Store username and pw into the database
users.insert({
"Username": username,
"Password": hashed_pw,
"email":email,
"Own":0,
"Debt":0
})
retJson = {
"status": 200,
"msg": "You successfully signed up for the API"
}
return jsonify(retJson)
def verifyPw(username, password):
if not UserExist(username):
return False
hashed_pw = users.find({
"Username":username
})[0]["Password"]
if bcrypt.hashpw(password.encode('utf8'), hashed_pw) == hashed_pw:
return True
else:
return False
def cashWithUser(username):
cash = users.find({
"Username":username
})[0]["Own"]
return cash
def debtWithUser(username):
debt = users.find({
"Username":username
})[0]["Debt"]
return debt
def generateReturnDictionary(status, msg):
retJson = {
"status": status,
"msg": msg
}
return retJson
def verifyCredentials(username, password):
if not UserExist(username):
return generateReturnDictionary(301, "Invalid Username"), True
correct_pw = verifyPw(username, password)
if not correct_pw:
return generateReturnDictionary(302, "Incorrect Password"), True
return None, False
def updateAccount(username, balance):
users.update({
"Username": username
},{
"$set":{
"Own": balance
}
})
def updateDebt(username, balance):
users.update({
"Username": username
},{
"$set":{
"Debt": balance
}
})
class Add(Resource):
def post(self):
postedData = request.get_json(force=True)
username = postedData["username"]
password = postedData["password"]
money = postedData["amount"]
retJson, error = verifyCredentials(username, password)
if error:
return jsonify(retJson)
if money<=0:
return jsonify(generateReturnDictionary(304, "The money amount entered must be greater than 0"))
cash = cashWithUser(username)
money-= 1 #Transaction fee
#Add transaction fee to bank account
bank_cash = cashWithUser("BANK")
updateAccount("BANK", bank_cash+1)
#Add remaining to user
updateAccount(username, cash+money)
return jsonify(generateReturnDictionary(200, "Amount Added Successfully to account"))
class Transfer(Resource):
def post(self):
postedData = request.get_json(force=True)
username = postedData["username"]
password = postedData["password"]
to = postedData["to"]
money = postedData["amount"]
retJson, error = verifyCredentials(username, password)
if error:
return jsonify(retJson)
cash = cashWithUser(username)
if cash <= 0:
return jsonify(generateReturnDictionary(303, "You are out of money, please Add Cash or take a loan"))
if money<=0:
return jsonify(generateReturnDictionary(304, "The money amount entered must be greater than 0"))
if not UserExist(to):
return jsonify(generateReturnDictionary(301, "Recieved username is invalid"))
cash_from = cashWithUser(username)
cash_to = cashWithUser(to)
bank_cash = cashWithUser("BANK")
updateAccount("BANK", bank_cash+1)
updateAccount(to, cash_to+money-1)
updateAccount(username, cash_from - money)
retJson = {
"status":200,
"msg": "Amount added successfully to account"
}
return jsonify(generateReturnDictionary(200, "Amount added successfully to account"))
class Balance(Resource):
def post(self):
postedData = request.get_json(force=True)
username = postedData["username"]
password = postedData["password"]
retJson, error = verifyCredentials(username, password)
if error:
return jsonify(retJson)
retJson = users.find({
"Username": username
},{
"Password": 0, #projection
"_id":0
})[0]
return jsonify(retJson)
class TakeLoan(Resource):
def post(self):
postedData = request.get_json(force=True)
username = postedData["username"]
password = postedData["password"]
money = postedData["amount"]
retJson, error = verifyCredentials(username, password)
if error:
return jsonify(retJson)
cash = cashWithUser(username)
debt = debtWithUser(username)
updateAccount(username, cash+money)
updateDebt(username, debt + money)
return jsonify(generateReturnDictionary(200, "Loan Added to Your Account"))
class PayLoan(Resource):
def post(self):
postedData = request.get_json(force=True)
username = postedData["username"]
password = postedData["password"]
money = postedData["amount"]
retJson, error = verifyCredentials(username, password)
if error:
return jsonify(retJson)
cash = cashWithUser(username)
if cash < money:
return jsonify(generateReturnDictionary(303, "Not Enough Cash in your account"))
debt = debtWithUser(username)
updateAccount(username, cash-money)
updateDebt(username, debt - money)
return jsonify(generateReturnDictionary(200, "Loan Paid"))
class test(Resource):
def get(self):
return "works fine!!!"
api.add_resource(Register, '/register')
api.add_resource(Add, '/add')
api.add_resource(Transfer, '/transfer')
api.add_resource(Balance, '/balance')
api.add_resource(TakeLoan, '/takeloan')
api.add_resource(PayLoan, '/payloan')
api.add_resource(test, '/')
if __name__=="__main__":
app.run(debug=True)