1.flask的简单使用
from flask import Flask
# from flask import make_response
app = Flask(__name__)
app.config.from_object('config')
print(app.config['DEBUG'])
# 路由注册方法1
@app.route('/hello/')
def hello():
# 基于类的视图(即插视图)
return "Hello, jack"
# Response对象
@app.route('/hello2/')
def hello2():
# 返回status code 200,404,301
# 返回content-type http headers
# 返回Response对象
headers = {
'content-type': 'text/plain',
'location': 'http://www.bing.com'
}
# response = make_response('<html></html>', 301)
# response.headers = headers
# return "<html></html>"
# return response
return '<html></html>', 301, headers
# 路由注册方法2
# app.add_url_rule('/hello/', view_func=hello)
# config是dict子类
# 当是入口文件启动的时候才允许app.run
# 原因2：当作为生产环境的时候这个app.run是不会运行的，由uwsgi作为服务器启动，如果没有if判断就会冲突
if __name__ == '__main__':
# 生产环境 nginx + uwsgi
app.run(host='0.0.0.0', debug=app.config['DEBUG'], port=81)
2.蓝图的使用
└── fisher
├── app
│ ├── __init__.py
│ ├── __pycache__
│ └── web
│ ├── book.py
│ ├── __init__.py
│ ├── __pycache__
│ └── user.py
├── config.py
├── fisher.py
├── helper.py
├── httper.py
├── Pipfile
├── Pipfile.lock
├── __pycache__
└── yushu_book.p
# 程序入口文件 fisher.py
from flask import Flask
from app import create_app
app = create_app()
if __name__ == '__main__':
# 生产环境 nginx + uwsgi
app.run(host='0.0.0.0', debug=app.config['DEBUG'], port=81)
# 初始化蓝图 app/__init__.py
from flask import Flask
def create_app():
app = Flask(__name__)
app.config.from_object('config')
register_blueprint(app)
return app
def register_blueprint(app):
from app.web.book import web
app.register_blueprint(web)
# config.py
DEBUG = False
# 初始化蓝图文件 app/web/__init__.py
from flask import Blueprint
web = Blueprint("web", __name__)
from app.web import book
from app.web import user
# 具体的视图文件 app/web/book.py
from flask import jsonify
from helper import is_key_or_isdn
from yushu_book import YuShuBook
from . import web
# 10.11.0.148:81/book/search/9787501524044/1
@web.route('/book/search/<q>/<page>')
def search(q, page):
# 判断搜索关键字是key还是isdn编码
isbn_or_key = is_key_or_isdn(q)
if isbn_or_key == 'isbn':
result = YuShuBook.search_by_isbn(q)
else:
result = YuShuBook.search_by_keyword(q)
# return json.dump(result), 200, {'content-type': 'application/json'}
return jsonify(result)
# 具体的视图文件 app/web/user.py
from flask import Blueprint
from . import web
@web.route("/user/create")
def create_user():
print("create user")
return "create user"
# 工具类文件 app/helper.py
def is_key_or_isdn(word):
isbn_or_key = "key"
# isdn 13 13位数字
# isdn 10 包括1-10位数字，并且带有一些 - 中划线
short_word = word.replace("-", "")
if len(word) == 13 and word.isdigit():
isbn_or_key = "isbn"
if "-" in word and len(short_word) == 10 and short_word.isdigit():
isbn_or_key = "isbn"
return isbn_or_key
# 处理book搜索的文件 app/yushu_book.py
from httper import HTTP
class YuShuBook(object):
isbn_url = 'http://t.yushu.im/v2/book/isbn/{}'
keyword_url = 'http://t.yushu.im/v2/book/search?q={}&count={}&start={}'
@classmethod
def search_by_isbn(cls, isbn):
url = cls.isbn_url.format(isbn)
result = HTTP.get(url)
return result
@classmethod
def search_by_keyword(cls, keyword, count=15, start=0):
url = cls.keyword_url.format(keyword, count, start)
result = HTTP.get(url)
return result
# 处理http请求工具类文件 app/httper.py
import requests
class HTTP(object):
@staticmethod
def get(url, return_json=True):
r = requests.get(url)
# if r.status_code == 200:
# if return_json:
# return r.json()
# else:
# return r.text
# else:
# if return_json:
# return {}
# else:
# return ""
if r.status_code != 200:
return {} if return_json else ''
return r.json() if return_json else r.text
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