python flask路由重要知识点

#coding utf8

# Flask初始化
from flask import Flask ,request ,current_app ,app ,make_response,render_template ,redirect ,abort ,session ,jsonify

app = Flask(__name__)

# jsonify返回的json串支持中文支持
app.config['JSON_AS_ASCII'] = False

# 修饰器注册路由app.route
@app.route("/")
def index():
	result = {
        'status': "200",
        'data': 'Hello, world!',
    }
	return jsonify(result)

# 通过add_url_rule函数注册路由
def index2():
  return 'index2'
app.add_url_rule('/index2',view_func=index2)


# 渲染模板，默认保存在templates目录下
@app.route("/tem")
def tem():
	return render_template('/tem.html',message='Bad username or password', title="title")

# 指定传输方式
@app.route('/user',methods=['POST','GET'])
def v_users():
    if request.method == 'GET':
        return ... # 返回用户列表
    if request.method == 'POST'
        return ... #创建新用户


@app.route("/name/<name>")
def name(name):
	# return name
	# return "<h1>"+name+"</h1>"
	# if not name:
	# 	abort(404)
	return "<h1> %s</h1>" %len(name)

@app.route("/req/")
def req():
	users_agent=request.headers.get('User-Agent')
	Host=request.headers.get('Host')
	appname=current_app.name
	
	return users_agent+""+Host+""+appname

# 调试信息
@app.route("/debug/")
def debug():
	# app.logger.debug('A value for debugging')
	app.logger.warning('A warning occurred (%d apples)', 42)
	# app.logger.error('An error occurred')

	# 获取当前的请求方式
	app.logger.debug(request.method) # GET


	app.logger.debug(request.path) # /debug/

	# 获取包含域名的完整URL地址
	app.logger.debug(request.url) # http://127.0.0.1:5000/debug/

	# 获取当前所有的路由信息
	app.logger.debug(app.url_map) 

	return "调试信息输出控制台"


# 重定向到百度
@app.route("/baidu/")
def function():
	return redirect("http://www.baidu.com")

# cookies设置
@app.route("/setCookies/")
def setCookies():
	res=make_response("设置namecookies")
	# 通过max_age控制cookie有效期, 单位:秒
	res.set_cookie("namecookies",'test cookies',max_age=3600)
	return res

# 获取cookies
@app.route("/getCookies/")
def getCookies():
	 return request.cookies.get('namecookies')

# 删除cookies
@app.route("/delCookies/")
def delCookies():
	res=make_response("删除namecookies")
	res.delete_cookie("namecookies")
	return res


import os
app.secret_key = os.urandom(24)
# 设置session
@app.route("/setSession/")
def setSession():
	session['sessioninfo'] = "session demo"
	return "session设置成功"

# 获取session
@app.route("/getSession/")
def getSession():
	return session['sessioninfo']

# 删除session
@app.route("/delSession/")
def delSession():
	session.pop('sessioninfo', None)
	return "session删除成功"

# 自定义404错误
@app.errorhandler(404)
def page_not_found(e):
	return '404'

# 自定义500错误
@app.errorhandler(500)
def internal_server_error(e):
	return '500'

# 启动程序
if __name__== '__main__':
	app.run(
        host = '0.0.0.0',
        port = 80,  
        debug = True 
		)