登錄注冊
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
{% load static %}
<link rel="stylesheet" href="{% static 'bootstrap-3.4.1-dist/css/bootstrap.min.css' %}">
<script src="{% static 'bootstrap-3.4.1-dist/js/bootstrap.min.js' %}"></script>
</head>
<body>
<h1 class="text-center">登錄</h1> <!--居中-->
<div class="container">
<div class="row">
<div class="col-md-7 col-md-offset-2">
<form action="">
<p>username:<input type="text" name="username" class="form-control"></p>
<p>password:<input type="text" name="password" class="form-control"></p>
<input type="submit" class="btn-block">
</form>
</div>
</div>
</div>
</body>
</html>
未指定提交方式，默認按照get方式。
from表單action參數
- 不寫，默認向當前所在url提交數據
- 全寫，指名道姓
- 只寫后綴/自定義urls對應關系/
在前期我們使用django提交post請求的時候 需要取配置文件中注釋掉一行代碼
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
# 'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
無論是post請求還是get請求都將觸發login視圖函數。
get請求和post請求應該有不同的處理機制
- get請求只需獲取頁面
- post請求獲取用戶數據
request對象方法初始
請求相關的數據對象，里面有很多簡易的方法
如何獲取當前請求方式: request.method
from django.shortcuts import render, HttpResponse, redirect
# Create your views here.
# 視圖函數必須接收一個形參(request)
def login(request):
"""
get請求和post請求應該有不同的處理機制
get請求只需獲取頁面
post請求獲取用戶數據
:param request:
:return:
"""
print(request.method)
if request.method == 'POST':
return HttpResponse("收到")
return render(request,'login.html')
返回請求方式，並且是全大寫的字符串方式 <class 'str'>
獲取用戶數據 : request.POST 與 request.GET
獲取用戶post請求提交的普通數據，不包含文件。
from django.shortcuts import render, HttpResponse, redirect
# Create your views here.
# 視圖函數必須接收一個形參(request)
def login(request):
"""
get請求和post請求應該有不同的處理機制
get請求只需獲取頁面
post請求獲取用戶數據
:param request:
:return:
"""
print(request.POST)
print(request.method)
if request.method == 'POST':
return HttpResponse("收到")
return render(request,'login.html')
服務端返回客戶端請求數據：request.POST.get()
字典的形式，鍵取決於前端name屬性
[25/Feb/2022 15:29:40] "GET /login/ HTTP/1.1" 200 763
<QueryDict: {}>
GET
<QueryDict: {'username': ['junjie'], 'password': ['123']}> # 字典
POST
[25/Feb/2022 15:29:42] "POST /login/ HTTP/1.1" 200 6
並且獲取的數據類型均為字符串(str)
[25/Feb/2022 15:35:15] "GET /login/ HTTP/1.1" 200 764
<QueryDict: {'username': ['junjie'], 'password': ['123']}>
POST
junjie <class 'str'>
[25/Feb/2022 15:35:16] "POST /login/ HTTP/1.1" 200 6
再次驗證
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
{% load static %}
<link rel="stylesheet" href="{% static 'bootstrap-3.4.1-dist/css/bootstrap.min.css' %}">
<script src="{% static 'bootstrap-3.4.1-dist/js/bootstrap.min.js' %}"></script>
</head>
<body>
<h1 class="text-center">登錄</h1> <!--居中-->
<div class="container">
<div class="row">
<div class="col-md-7 col-md-offset-2">
<form action="" method="post">
<p>username:<input type="text" name="username" class="form-control"></p>
<p>password:<input type="text" name="password" class="form-control"></p>
<p>
<input type="checkbox" name="hobby" value="111">111
<input type="checkbox" name="hobby" value="222">222
<input type="checkbox" name="hobby" value="333">333
</p>
<input type="submit" class="btn-block">
</form>
</div>
</div>
</div>
</body>
</html>
views.py
from django.shortcuts import render, HttpResponse, redirect
# Create your views here.
# 視圖函數必須接收一個形參(request)
def login(request):
"""
get請求和post請求應該有不同的處理機制
get請求只需獲取頁面
post請求獲取用戶數據
:param request:
:return:
"""
print(request.POST)
print(request.method)
hobby = request.POST.get('hobby')
print(hobby,type(hobby))
if request.method == 'POST':
return HttpResponse("收到")
return render(request,'login.html')
服務端接收客戶端返回信息
<QueryDict: {}>
GET
None <class 'NoneType'>
[25/Feb/2022 15:40:04] "GET /login/ HTTP/1.1" 200 1020
<QueryDict: {'username': [''], 'password': [''], 'hobby': ['111', '222', '333']}>
POST
333 <class 'str'>
[25/Feb/2022 15:40:04] "POST /login/ HTTP/1.1" 200 6
由此得出：request.POST.get() ，只獲取列表的最后一個元素
直接將列表取出 : request.POST.getlist()
username = request.POST.getlist('username')
print(username,type(username))
GET
[] <class 'list'>
<QueryDict: {'username': ['junjie'], 'password': ['123'], 'hobby': ['111', '222', '333']}>
POST
['111', '222', '333'] <class 'list'>
獲取用戶提交的get請求數據: request.GET
request.GET.get() # 只獲取列表最后一個元素
request.GET.getlist() # 直接將列表取出
"""
get請求攜帶的數據是有大小限制的 大概好像只有4KB左右
而post請求則沒有限制
"""