【一】request对象引入#

【1】提交GET请求#

（1）前端#

form表单中action属性，不写默认是当前路由地址
form表单中的method属性，不写默认是GET请求

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<!DOCTYPE html>
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<html lang="en">
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<head>
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    <meta charset="UTF-8">
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    <title>Title</title>
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</head>
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<body>
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<form action="" method="get">
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    <p>username : <input type="text" name="username"></p>
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    <p>password : <input type="password" name="password"></p>
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    <p><input type="submit"></p>
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</form>
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</body>
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</html>

（2）后端#

app01/views.py

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from django.shortcuts import render
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def register(request):
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    return render(request, 'register.html')

urls

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from django.contrib import admin
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from django.urls import path
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from app01 import views
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urlpatterns = [
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    path('admin/', admin.site.urls),
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    path("register/", views.register)
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]

前端路由地址访问
- http://127.0.0.1<8000>/register

【2】提交POST请求#

（1）前端#

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<!DOCTYPE html>
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<html lang="en">
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<head>
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    <meta charset="UTF-8">
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    <title>Title</title>
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</head>
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<body>
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<form action="" method="post">
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    <p>username : <input type="text" name="username"></p>
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    <p>password : <input type="password" name="password"></p>
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    <p><input type="submit"></p>
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</form>
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</body>
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</html>

（2）后端#

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from django.shortcuts import render
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def register(request):
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    return render(request, 'register.html')

（3）POST请求报错#

当前端form表单发送POST请求时，会报一个错，导致后端崩溃

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Forbidden (403)
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CSRF verification failed. Request aborted.
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You are seeing this message because this site requires a CSRF cookie when submitting forms. This cookie is required for security reasons, to ensure that your browser is not being hijacked by third parties.
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If you have configured your browser to disable cookies, please re-enable them, at least for this site, or for “same-origin” requests.

（4）解决办法#

将settings.py文件中的配置注释掉，在后面的学习中我们会逐步的解决掉这个问题

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MIDDLEWARE = [
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    'django.middleware.security.SecurityMiddleware',
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    'django.contrib.sessions.middleware.SessionMiddleware',
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    'django.middleware.common.CommonMiddleware',
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    # 将这个配置先注释掉
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    # 'django.middleware.csrf.CsrfViewMiddleware',
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    'django.contrib.auth.middleware.AuthenticationMiddleware',
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    'django.contrib.messages.middleware.MessageMiddleware',
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    'django.middleware.clickjacking.XFrameOptionsMiddleware',
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]

【二】request对象属性和方法#

【1】request.method#

获取发起请求的请求方式
get请求携带的数据是由大小限制的
post请求携带的请求参数没有限制

【2】request.POST#

获取用户输入的请求数据，但不包含文件
返回的是:大写字符串

【3】get/getlist#

get 只会获取列表最后一个元素
getlist 直接将列表取出(多选项)

【4】示例#

（1）前端#

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<!DOCTYPE html>
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<html lang="en">
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<head>
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    <meta charset="UTF-8">
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    <title>Title</title>
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</head>
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<body>
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<form action="" method="post">
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    <p>
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        username : <input type="text" name="username">
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    </p>
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    <p>
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        password : <input type="password" name="password">
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    </p>
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    <p>
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        hobby :
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        music <input type="checkbox" name="hobby" value="music">
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        sport <input type="checkbox" name="hobby" value="sport">
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        dance <input type="checkbox" name="hobby" value="dance">
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    </p>
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    <p><input type="submit"></p>
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</form>
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</body>
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</html>

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<!DOCTYPE html>
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<html lang="en">
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<head>
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    <meta charset="UTF-8">
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    <title>Title</title>
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</head>
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<body>
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<form action="">
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    <p>
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        username : <input type="text" name="username">
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    </p>
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    <p>
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        password : <input type="password" name="password">
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    </p>
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    <p><input type="submit"></p>
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</form>
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</body>
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</html>

（2）后端#

app01/views.py

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from django.shortcuts import render, HttpResponse, redirect
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def register(request):
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    # 【一】如果是正常访问页面，发送的请求是 GET 请求
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    print(request.method)  # GET
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    # 【二】如果是通过表单提交数据，发送的请求是 POST 请求
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    if request.method == 'POST':
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        print(request.method)  # POST
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        # 【三】从POST请求中获取到用户输入的参数
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        data = request.POST
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        print(data)  # <QueryDict: {'username': ['dream'], 'password': ['1314521'], 'hobby': ['sport', 'dance']}>
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        # 【四】从POST请求中提取出参数
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        username = data.get('username')
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        password = data.get('password')
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        hobby = data.get('hobby')
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        print(username)  # dream
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        print(password, hobby)  # 1314521
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        print(hobby)  # ['sport', 'dance']
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        return redirect(to='/login/')
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    # 发送GET请求，则渲染注册页面
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    return render(request, 'register.html')
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def login(request):
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    # 【一】获取到当前请求方式
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    print(request.method)
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    # 【二】获取到当前GET请求携带的参数
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    data = request.GET
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    print(data)  # <QueryDict: {'username': ['dream'], 'password': ['521']}>
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    if data:
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        username = data.get("username")
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        password = data.get("password")
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        if username == "dream" and password == "1314521":
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            return HttpResponse("登录成功")
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        else:
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            return HttpResponse("用户名或密码失败")
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    return render(request, 'login.html')

urls.py

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from django.contrib import admin
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from django.urls import path
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from app01 import views
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urlpatterns = [
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    path('admin/', admin.site.urls),
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    path("register/", views.register),
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    path("login/", views.login)
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]

音乐

音乐

【一】request对象引入#

【1】提交GET请求#

（1）前端#

（2）后端#

【2】提交POST请求#

（1）前端#

（2）后端#

（3）POST请求报错#

（4）解决办法#

【二】request对象属性和方法#

【1】request.method#

【2】request.POST#

【3】get/getlist#

【4】示例#

（1）前端#

（2）后端#

支持与分享

音乐

Django框架入门之request对象

【一】request对象引入#

【1】提交GET请求#

（1）前端#

（2）后端#

【2】提交POST请求#

（1）前端#

（2）后端#

（3）POST请求报错#

（4）解决办法#

【二】request对象属性和方法#

【1】request.method#

【2】request.POST#

【3】get/getlist#

【4】示例#

（1）前端#

（2）后端#

支持与分享