Flask 基础组件（九）：请求扩展
2024-09-07 15:26:36
#!/usr/bin/env python
# -*- coding:utf-8 -*-
from flask import Flask, Request, render_template app = Flask(__name__, template_folder='templates')
app.debug = True @app.before_first_request
def before_first_request1():
print('before_first_request1') @app.before_first_request
def before_first_request2():
print('before_first_request2') @app.before_request
def before_request1():
Request.nnn = 123
print('before_request1') @app.before_request
def before_request2():
print('before_request2') @app.after_request
def after_request1(response):
print('before_request1', response)
return response @app.after_request
def after_request2(response):
print('before_request2', response)
return response @app.errorhandler(404)
def page_not_found(error):
return 'This page does not exist', 404 @app.template_global()
def sb(a1, a2):
return a1 + a2 @app.template_filter()
def db(a1, a2, a3):
return a1 + a2 + a3 @app.route('/')
def hello_world():
return render_template('hello.html') if __name__ == '__main__':
app.run()
#!/usr/bin/env python
# -*- coding:utf-8 -*-
from flask import Flask, Request, render_template app = Flask(__name__, template_folder='templates')
app.debug = True @app.before_first_request
def before_first_request1():
print('before_first_request1') @app.before_first_request
def before_first_request2():
print('before_first_request2') @app.before_request
def before_request1():
Request.nnn = 123
print('before_request1') @app.before_request
def before_request2():
print('before_request2') @app.after_request
def after_request1(response):
print('before_request1', response)
return response @app.after_request
def after_request2(response):
print('before_request2', response)
return response @app.errorhandler(404)
def page_not_found(error):
return 'This page does not exist', 404 @app.template_global()
def sb(a1, a2):
return a1 + a2 @app.template_filter()
def db(a1, a2, a3):
return a1 + a2 + a3 @app.route('/')
def hello_world():
return render_template('hello.html') if __name__ == '__main__':
app.run()
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