六、请求与响应

1、常用的请求信息

@app.route("/home")
def home():
    from flask import request
    # 常用请求信息
    print(request.method)
    print(request.args)
    print(request.form)
    print(request.files)
    print(request.cookies)
    print(request.headers)
    print(request.values)
    print(request.data)
    print(request.path)
    print(request.full_path)
    print(request.url)
    print(request.base_url)
    print(request.url_root)
    print(request.host)
    print(request.host_url)
    print(request.script_root)
    return "Hello, home!"

2、常用的构造响应的方式（响应编辑Cookie，请求获取Cookie）

@app.route("/")
def index():
    # 响应的几种形式
    # 返回字符串
    # return "Hello"
    # 返回一个int，根据报错信息得知
    # string, dict, tuple, Response instance, or WSGI callable, but it was a int
    # The tuple must have the form (body, status, headers), (body, status), or (body, headers).
    # return (1 , 2, 3, 4)
    # 返回一个字典，必须是可序列化对象
    # return {"func": [1, 2, 3]}
    # 渲染模板
    # from flask import render_template
    # data = {}
    # return render_template("home.html", **data)
    # 重定向
    # from flask import redirect
    # return redirect("/home")

    # 构造一个响应
    response = make_response("Hello World")
    response.headers["token"] = "awdadjdkajdaadkjadjadja"
    response.set_cookie("k", "v")
    response.delete_cookie("session")
    return response