return  "123"

return "<h1>hello</h1>", 400, {"company": "python"}

from flask import Flask,make_response

return make_response("<h1>hello</h1>", 400, {"study": "flask"})

from flask import Flask,Response

from flask import Flask,make_response, Response

app = Flask(__name__)

app.config.update({
    "DEBUG": True
})


@app.route("/")
def index():
    # 默認(rèn)返回的就是HTML代碼，在flask內(nèi)部調(diào)用視圖時(shí)，得到的返回值會(huì)被flask判斷類型，
    #隨意返回個(gè)字符串，默認(rèn)響應(yīng)結(jié)果是html頁(yè)面
    # return  "123"


    # 如果類型不是response對(duì)象，則視圖的返回值會(huì)被作為response對(duì)象的實(shí)例參數(shù)返回客戶端
    #以元祖方式返回，第一個(gè)參數(shù)是html文本，第二個(gè)參數(shù)是響應(yīng)狀態(tài)碼，第三個(gè)參數(shù)是響應(yīng)頭信息，字典方式傳參
    # return "<h1>hello</h1>", 400, {"company": "python"}


    #可以借助make_response()函數(shù)來(lái)返回Response對(duì)象
    # return make_response("<h1>hello</h1>", 400, {"study": "flask"})



    # 通過(guò)Response返回Response對(duì)象
    return Response(f"默認(rèn)首頁(yè)", 201, {"company": "python"})


if __name__ == '__main__':
    app.run(host="0.0.0.0", port=5000, debug=True)

data = {"name": "小明", "age": 16}
#一定要加上content-type響應(yīng)頭，否則響應(yīng)的為html頁(yè)面
return json.dumps(data,ensure_ascii=False), 200, {"Content-Type": "application/json"}

#也可以用Response返回json
return Response(json.dumps(data), 200, {"Content-Type": "application/json"})

from flask import Flask, jsonify

data = [
        {"id": 1, "username": "liulaoshi", "age": 18},
        {"id": 2, "username": "liulaoshi", "age": 17},
        {"id": 3, "username": "liulaoshi", "age": 16},
        {"id": 4, "username": "小明", "age": Decimal(15)},
]
return jsonify(data)

from flask import Flask, jsonify, Response
from decimal import Decimal

import json

app = Flask(__name__)


# app.config.update({
#     "JSONIFY_PRETTYPRINT_REGULAR": False,
#     "SON_AS_ASCII":False
# })


@app.route("/")
def index():
    # """返回json格式數(shù)據(jù)，返回json字典"""
    # data = {"name":"xiaoming","age":16}
    # return data

    """響應(yīng)json數(shù)據(jù)[原生寫(xiě)法]"""
    # data = {"name": "小明", "age": 16}
    #一定要加上content-type響應(yīng)頭，否則響應(yīng)的為html頁(yè)面
    # return json.dumps(data,ensure_ascii=False), 200, {"Content-Type": "application/json"}


    #也可以用Response返回json
    # return Response(json.dumps(data), 200, {"Content-Type": "application/json"})


    """返回json格式數(shù)據(jù)，返回各種json數(shù)據(jù)，包括列表,jsonify寫(xiě)法"""
    data = [
        {"id": 1, "username": "liulaoshi", "age": 18},
        {"id": 2, "username": "liulaoshi", "age": 17},
        {"id": 3, "username": "liulaoshi", "age": 16},
        {"id": 4, "username": "小明", "age": Decimal(15)},
    ]
    return jsonify(data)

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=5000, debug=True)

app = Flask(__name__)

app.config.update({
    "JSONIFY_PRETTYPRINT_REGULAR": False,
})

app.config.update({

    "SON_AS_ASCII":False
})

@app.route("/img")
def img():
    """響應(yīng)圖片格式給客戶端"""
    with open("對(duì)稱加密.png", "rb") as f:
        data = f.read()
    return data, 200, {"Content-Type": "image/png"}  # MIME類型

from flask import Flask, redirect

@app.route("/")
def index():
    """頁(yè)面跳轉(zhuǎn)"""
    """
    301: 永久重定向，頁(yè)面已經(jīng)沒(méi)有了，站點(diǎn)沒(méi)有了，永久轉(zhuǎn)移了。
    302：臨時(shí)重定向，一般驗(yàn)證失敗、訪問(wèn)需要權(quán)限的頁(yè)面進(jìn)行登錄跳轉(zhuǎn)時(shí)，都是屬于臨時(shí)跳轉(zhuǎn)。
    """
    # redirect函數(shù)就是response對(duì)象的頁(yè)面跳轉(zhuǎn)的封裝
    response = redirect("https://www.baidu.com", 302)
    return response

# redirect的原理，最終還是借助Resonse對(duì)象來(lái)實(shí)現(xiàn)：
response = "", 302, {"Location": "https://www.baidu.com"}
return response

from flask import Flask, redirect

# 應(yīng)用實(shí)例對(duì)象
app = Flask(__name__)

@app.route("/")
def index():
    """頁(yè)面跳轉(zhuǎn)"""
    """
    301: 永久重定向，頁(yè)面已經(jīng)沒(méi)有了，站點(diǎn)沒(méi)有了，永久轉(zhuǎn)移了。
    302：臨時(shí)重定向，一般驗(yàn)證失敗、訪問(wèn)需要權(quán)限的頁(yè)面進(jìn)行登錄跳轉(zhuǎn)時(shí)，都是屬于臨時(shí)跳轉(zhuǎn)。
    """
    # redirect函數(shù)就是response對(duì)象的頁(yè)面跳轉(zhuǎn)的封裝
    # response = redirect("https://www.baidu.com", 302)


    # redirect的原理，最終還是借助Resonse對(duì)象來(lái)實(shí)現(xiàn)：
    response = "", 302, {"Location": "https://www.baidu.com"}
    return response


if __name__ == '__main__':
    # 啟動(dòng)項(xiàng)目的web應(yīng)用程序
    app.run(host="0.0.0.0", port=5000, debug=True)

from flask import url_for

from flask import Flask, redirect, Response,request
from flask import url_for

# 應(yīng)用實(shí)例對(duì)象
app = Flask(__name__)


@app.route("/user")
def index():
    if request.args.get("token"):
        print('token',request.args.get("token"))
        return "個(gè)人中心"

    # 跳轉(zhuǎn)頁(yè)面到登錄視圖中
    # redirect("url地址") # 控制頁(yè)面跳轉(zhuǎn)到任意路徑下
    # return redirect("/login")

    # 跳轉(zhuǎn)頁(yè)面到其他視圖中
    url = url_for("login")  # url_for("視圖名稱")
    print(app.url_map)  # 路由列表，整個(gè)flask站點(diǎn)中所有的url地址和視圖的映射關(guān)系都在這個(gè)屬性里面
    print(url)
    return redirect(url)


@app.route("/login")
def login():
    return "登錄視圖"



if __name__ == '__main__':
    # 啟動(dòng)項(xiàng)目的web應(yīng)用程序
    app.run(host="0.0.0.0", port=5000, debug=True)

from flask import Flask, redirect, url_for

# 應(yīng)用實(shí)例對(duì)象
app = Flask(__name__)

@app.route("/demo/<int:mob>")
def mobile(mob):
    print(mob)
    return f"mobile={mob}"

@app.route("/sms")
def sms():
    """攜帶路徑參數(shù)進(jìn)行站內(nèi)跳轉(zhuǎn)"""
    # url_for("視圖方法名", 路由路徑參數(shù)名=路由參數(shù)值)
    url = url_for("mobile", mob=13312345678)
    print(url)
    return redirect(url)

if __name__ == '__main__':
    # 啟動(dòng)項(xiàng)目的web應(yīng)用程序
    app.run(host="0.0.0.0", port=5000, debug=True)