from flask import request
判断method方式
request.method 'POST', ‘GET’
获取form内容
request.form['form_name']
获取url参数
(?key=value) request.args.get('key', '')
request.args["url"]
获取上传的文件
确保在html表单中设置‘enctype="multipart/form-data"’属性，f = request.files['the_file'], from werkzeug import secure_filename, file_name = secure_filename(f.filename)
获取cookies内容
request.cookies.get('cook_name')
request.cookies['cook_name']
设置cookies内容
resp = make_response(render_template(...)) , rep.set_cookie('key', 'value')
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res = app.make_response('hello lg')
res.set_cookie('username', value='lgphp', max_age=20000)
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删除cooikes
res = app.make_response(render_template(...))
res.delete_cookie('username') 也可以
res.set_cookie('username', value='lgphp', expires=0)
判断cookie存在?
if (request.cookies):