Python笔记-Flask注册路由

app.route和app.add_url_rule和蓝图

 

 

app.route方式：

源码如下：

from flask import Flask
app = Flask(__name__)
 
@app.route("/")
def hello():
    return "Hello World"
 
@app.route("/my")
def my():
    return "my page"
 
if __name__ == "__main__":
    app.run(host = "0.0.0.0", debug=True)

运行截图如下：

 

在路由中添加参数

from flask import Flask
app = Flask(__name__)
 
@app.route("/")
def hello():
    return "Hello World"
 
@app.route("/my/<user_name>")
def my(user_name):
    return "my page %s" % (user_name)
 
if __name__ == "__main__":
    app.run(host= "0.0.0.0", debug = True)

运行截图如下：

通过app.add_url_rule方式

主要是绑定视图函数和视图类

如下代码

from flask import Flask
app = Flask(__name__)
 
def hello():
    return "Hello World"
 
def my(user_name):
    return "my page %s" % (user_name)
 
app.add_url_rule(rule = "/", view_func = hello)
app.add_url_rule(rule = "/my/<user_name>", view_func = my)
 
if __name__ == "__main__":
    app.run(host = "0.0.0.0", debug=True)

运行截图如下：

大型项目中都使用 蓝图 方式

如下代码：

from flask import Flask, Blueprint
app = Flask(__name__)
 
index_page = Blueprint("index_page", __name__)
@index_page.route("/")
def index_page_index():
    return "index page"
 
app.register_blueprint(index_page, url_prefix = "/it1995")
 
@app.route("/")
def hello():
    return "Hello World"
 
if __name__ == "__main__":
    app.run(host = "0.0.0.0", debug=True)

运行截图如下：

下面是分层的思想：

程序结构如下：

程序运行截图如下：

源码如下：

index_controller_1.py

from flask import Flask, Blueprint
 
index_1 = Blueprint("index_1", __name__)
@index_1.route("/")
def index_1_index():
    return "index page one"
 
@index_1.route("/my")
def index_1_my():
    return "index page one my"

index_controller_2.py

from flask import Flask, Blueprint
 
index_2 = Blueprint("index_2", __name__)
@index_2.route("/")
def index_2_index():
    return "index page two"

index_controller_3.py

from flask import Flask, Blueprint
 
index_3 = Blueprint("index_3", __name__)
@index_3.route("/")
def index_3_index():
    return "index page three"

index5.py

from flask import Flask
from tie.index_controller_1 import index_1
from tie.index_controller_2 import index_2
from tie.index_controller_3 import index_3
 
app = Flask(__name__)
 
app.register_blueprint(index_1, url_prefix ="/it1995")
app.register_blueprint(index_2, url_prefix ="/it1996")
app.register_blueprint(index_3, url_prefix ="/it1997")
 
if __name__ == "__main__":
    app.run(host = "0.0.0.0", debug=True)