路由

添加路由

from flask import Flask,render_template,redirect
app = Flask(__name__)

"""
1. 执行decorator=app.route('/index',methods=['GET','POST'])
2. @decorator
     - decorator(index)
"""
# 路由方式一（*）：
@app.route('/index',methods=['GET','POST'])
def index():
    return "Index"

# 路由方式二：
def order():
    return 'Order'

app.add_url_rule('/order',view_func=order)


if __name__ == '__main__':
    app.run()

反向生成

from flask import Flask,render_template,redirect,url_for
app = Flask(__name__)

@app.route('/index',methods=['GET','POST'],endpoint='n1')
def index():
    v1 = url_for('n1')
    v2 = url_for('login')
    v3 = url_for('logout')
    print(v1,v2,v3)
    return "Index"

@app.route('/login',methods=['GET','POST'])
def login():
    return "login"

@app.route('/logout',methods=['GET','POST'])
def logout():
    return "logout"

if __name__ == '__main__':
    app.run()

路由转换器

from flask import Flask,render_template,redirect,url_for
app = Flask(__name__)

@app.route('/index',methods=['GET','POST'],endpoint='n1')
def index():
    v1 = url_for('n1')
    v2 = url_for('login')
    v3 = url_for('logout')
    print(v1,v2,v3)
    return "Index"

@app.route('/login',methods=['GET','POST'])
def login():
    return "login"

@app.route('/logout',methods=['GET','POST'])
def logout():
    return "logout"

if __name__ == '__main__':
    app.run()

flask默认转换

DEFAULT_CONVERTERS = {
    'default':          UnicodeConverter,
    'string':           UnicodeConverter,
    'any':              AnyConverter,
    'path':             PathConverter,
    'int':              IntegerConverter,
    'float':            FloatConverter,
    'uuid':             UUIDConverter,
}

自定义转换器

from flask import Flask,render_template,redirect,url_for
from werkzeug.routing import BaseConverter
app = Flask(__name__)


class RegexConverter(BaseConverter):
    """
    自定义URL匹配正则表达式
    """
    def __init__(self, map, regex):
        super(RegexConverter, self).__init__(map)
        self.regex = regex

    def to_python(self, value):
        """
        路由匹配时，匹配成功后传递给视图函数中参数的值
        :param value:
        :return:
        """
        return int(value)

    def to_url(self, value):
        """
        使用url_for反向生成URL时，传递的参数经过该方法处理，返回的值用于生成URL中的参数
        :param value:
        :return:
        """
        val = super(RegexConverter, self).to_url(value)
        return val

app.url_map.converters['xxx'] = RegexConverter

@app.route('/index/<xxx("\d+"):nid>',methods=['GET','POST'])
def index(nid):
    print(nid,type(nid))
    v = url_for('index',nid=999) # /index/999
    print(v)
    return "Index"

if __name__ == '__main__':
    app.run()

其他参数

# endpoint=""     默认是函数名, 可以在app.route()的关键字参数中定义
# url_for("")     反向地址, 通过视图函数名, 或endpoint解析对应的URL
# methods=[]      该视图函数能处理的请求方式, 默认是GET, 当重新定义了methods, 那么默认的GET也会被覆盖
#
# defaults={}     给视图函数传递参数, 可以作为默认参数, 传了就必须的接
# strict_slashes=Bool     严格的使用"/", URL中没有"/", 访问时也不能有, URL中有"/", 你访问时没有, 会通过301进行永久重定向
# redirect_to=""      永久重定向
#
# '/shopping/<int:year>/<string:month>'   路由中使用参数, 并可以转换参数的数据类型, 切记数字可以转字符串, 字符串不能转数字
from flask import Flask,render_template,redirect
app = Flask(__name__)

@app.route('/index',methods=['GET','POST'],redirect_to='/new')
def index():
    return "老功能"

@app.route('/new',methods=['GET','POST'])
def new():
    return '新功能'


if __name__ == '__main__':
    app.run()

子域名

from flask import Flask,render_template,redirect
app = Flask(__name__)
app.config['SERVER_NAME'] = 'oldboy.com:5000'


@app.route("/dynamic", subdomain="<username>")
def xxxxxxx(username):
    print(username)
    return 'xxxxx'

if __name__ == '__main__':
    app.run()