将json加载到sqlite并在网站上显示所选数据

问题描述

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？

解决方法

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