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flask蓝图的简单使用

时间:2019-01-30 15:58:28      阅读:157      评论:0      收藏:0      [点我收藏+]

标签:cat   服务   art   book   sdn   blueprint   ext   from   help   

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

 

flask蓝图的简单使用

标签:cat   服务   art   book   sdn   blueprint   ext   from   help   

原文地址:https://www.cnblogs.com/reblue520/p/10337905.html

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