Flask—jsonify方式(api接口)「建议收藏」

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发布于 2022-08-25 13:41:56

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发布于 2022-08-25 13:41:56

大家好，又见面了，我是你们的朋友全栈君。

GET 方法

from flask import Flask, jsonify, abort, make_response
app = Flask(__name__)
articles = [
    {
        'id': 1,
        'title': 'the way to python',
        'content': 'tuple, list, dict'
    },
    {
        'id': 2,
        'title': 'the way to REST',
        'content': 'GET, POST, PUT'
    }
]
@app.route('/blog/api/articles', methods=['GET'])
def get_articles():
    """ 获取所有文章列表 """
    return jsonify({
  
  'articles': articles})


@app.route('/blog/api/articles/<int:article_id>', methods=['GET'])
def get_article(article_id):
    """ 获取某篇文章 """
    article = filter(lambda a: a['id'] == article_id, articles)
    if len(article) == 0:
        abort(404)
    return jsonify({
  
  'article': article[0]})


@app.errorhandler(404)
def not_found(error):
    return make_response(jsonify({
  
  'error': 'Not found'}), 404)
if __name__ == '__main__':
    app.run(host='127.0.0.1', port=5632, debug=True)

http://127.0.0.1:5632/blog/api/articles输出如下：

{
  "articles": [ { "content": "tuple, list, dict", "id": 1, "title": "the way to python" }, { "content": "GET, POST, PUT", "id": 2, "title": "the way to REST" } ] }

http://localhost:5632/blog/api/articles/2输出如下：

{
  "article": { "content": "GET, POST, PUT", "id": 2, "title": "the way to REST" } }

当返回404错误时候，输出

{
  "error": "Not found" }

post方法

from flask import request
from flask import Flask, jsonify, abort, make_response

app = Flask(__name__)

@app.route('/blog/api/articles', methods=['POST'])
def create_article():
    if not request.json or not 'title' in request.json:
        abort(400)
    article = {
        'id': 11,
        'title': request.json['title'],
        'content': request.json.get('content', '')
    }
    return jsonify({
  
  'article': article})


if __name__ == '__main__':
    app.run(host='127.0.0.1', port=5632, debug=True)

输出如下：

PUT 方法

from flask import request
from flask import Flask, jsonify, abort, make_response

app = Flask(__name__)

articles = [
    {
        'id': 1,
        'title': 'the way to python',
        'content': 'tuple, list, dict'
    },
    {
        'id': 2,
        'title': 'the way to REST',
        'content': 'GET, POST, PUT'
    }
]
@app.route('/blog/api/articles/<int:article_id>', methods=['PUT'])
def update_article(article_id):
    article = list(filter(lambda a: a['id'] == article_id, articles))
    if len(article) == 0:
        abort(404)
    if not request.json:
        abort(400)

    article[0]['title'] = request.json.get('title', article[0]['title'])
    article[0]['content'] = request.json.get('content', article[0]['content'])
    return jsonify({
  
  'article': article[0]})


if __name__ == '__main__':
    app.run(host='127.0.0.1', port=5632, debug=True)

DELETE 方法

from flask import request
from flask import Flask, jsonify, abort, make_response

app = Flask(__name__)

articles = [
    {
        'id': 1,
        'title': 'the way to python',
        'content': 'tuple, list, dict'
    },
    {
        'id': 2,
        'title': 'the way to REST',
        'content': 'GET, POST, PUT'
    }
]

@app.route('/blog/api/articles/<int:article_id>', methods=['DELETE'])
def delete_article(article_id):
    article = list(filter(lambda t: t['id'] == article_id, articles))
    if len(article) == 0:
        abort(404)
    articles.remove(article[0])
    return jsonify({
  
  'result': True})


if __name__ == '__main__':
    app.run(host='127.0.0.1', port=5632, debug=True)