如何解决将json加载到sqlite并在网站上显示所选数据
我的目的是从this API中获取数据(书籍),在SQLite中保存一些选定的数据(使用SQLAlchemy模型),然后将这些数据显示为JSON。到目前为止,我已经做了类似的事情:
from flask import Flask,request,jsonify
from flask_sqlalchemy import SQLAlchemy
from flask_marshmallow import Marshmallow
import requests
import json
app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///test.db'
db = SQLAlchemy(app)
ma = Marshmallow(app)
class Book(db.Model):
id = db.Column(db.Integer,primary_key=True)
title = db.Column(db.String(100))
authors = db.Column(db.String(100))
published_date = db.Column(db.String(100))
categories = db.Column(db.String(100),default='N/A')
average_rating = db.Column(db.Integer)
ratings_count = db.Column(db.Integer)
thumbnail = db.Column(db.String(300))
def __repr__(self):
return "Book " + str(self.id)
class BookSchema(ma.Schema):
class Meta:
fields = ('id','title','authors','published_date','average_rating','ratings_count','thumbnail')
book_schema = BookSchema()
books_schema = BookSchema(many=True)
def populate_table():
url = 'https://www.googleapis.com/books/v1/volumes?q=Finances'
r = requests.get(url)
books = json.loads(r.content,encoding='utf8')
for book in books['items']:
try:
b = Book(title=json.dumps(book['volumeInfo']['title']),authors=json.dumps(book['volumeInfo']['authors']),published_date=json.dumps(book['volumeInfo']['publishedDate']),categories=json.dumps(book['volumeInfo']['categories']),average_rating=json.dumps(book['volumeInfo']['averageRating']),ratings_count=json.dumps(book['volumeInfo']['ratingsCount']),thumbnail=json.dumps(book['volumeInfo']['imageLinks']['thumbnail']))
except KeyError:
pass
else:
db.session.add(b)
db.session.commit()
@app.route('/all',methods=['GET'])
def books_list():
books = Book.query.all()
result = books_schema.dump(books)
return jsonify(result)
if __name__ == "__main__":
app.run(debug=True)
首先,我想问一下,填充数据库的方法是否可以接受,或者有更好的方法吗? 其次,当我想在浏览器中显示所有书籍时,我得到的是这样的:
[
{
"authors": "[\"Graham D. Vinter\",\"Gareth Price\"]","average_rating": 5,"id": 1,"published_date": "\"2006\"","ratings_count": 1,"thumbnail": "\"http://books.google.com/books/content?id=8wz4MpHS4FsC&printsec=frontcover&img=1&zoom=1&edge=curl&source=gbs_api\"","title": "\"Project Finance\""
},{
"authors": "[\"Denzil Watson\",\"Antony Head\"]","average_rating": 4.5,"id": 2,"published_date": "\"2007\"","ratings_count": 2,"thumbnail": "\"http://books.google.com/books/content?id=qyd8yKFWjHUC&printsec=frontcover&img=1&zoom=1&edge=curl&source=gbs_api\"","title": "\"Corporate Finance\""
},{
"authors": "[\"Gil Fried\",\"Steven J. Shapiro\",\"Timothy D. DeSchriver\"]","average_rating": 4,"id": 3,"published_date": "\"2008\"","thumbnail": "\"http://books.google.com/books/content?id=VuTT3w0UUEYC&printsec=frontcover&img=1&zoom=1&edge=curl&source=gbs_api\"","title": "\"Sport Finance\""
}
]
如您所见,多余的斜杠和撇号是不必要的,但是我如何摆脱它们呢?
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