from django.shortcuts import render,redirect
from django.http import HttpResponse,JsonResponse
from datetime import datetime,timedelta
# Create your views here. # request就是HttpRequest类型的对象
# request包含浏览器请求的信息
def index(request):
'''首页'''
# num = 'a' + 1
# print(request.path)
response = render(request, 'booktest/index.html')
response.write('hello')
return response def show_arg(request, num):
return HttpResponse(num) def login(request):
'''显示登录页面'''
# 判断用户是否登录
if request.session.has_key('islogin'):
# 用户已登录, 跳转到首页
return redirect('/index')
else:
# 用户未登录
# 获取cookie username
if 'username' in request.COOKIES:
# 获取记住的用户名
username = request.COOKIES['username']
else:
username = '' return render(request, 'booktest/login.html', {'username':username}) def login_check(request):
'''登录校验视图'''
# request.POST 保存的是post方式提交的参数 QueryDict
# request.GET 保存是get方式提交的参数
print(request.method)
# 1.获取提交的用户名和密码
username = request.POST.get('username')
password = request.POST.get('password')
remember = request.POST.get('remember')
# 2.进行登录的校验
# 实际开发:根据用户名和密码查找数据库
# 模拟: smart 123
if username == 'smart' and password == '':
# 用户名密码正确，跳转到首页
response = redirect('/index') # 判断是否需要记住用户名
if remember == 'on':
# 设置cookie username，过期时间1周
response.set_cookie('username', username, max_age=7*24*3600) # 记住用户登录状态
# 只有session中有islogin,就认为用户已登录
request.session['islogin'] = True # 返回应答
return response
else:
# 用户名或密码错误，跳转到登录页面
return redirect('/login') # /test_ajax
def ajax_test(request):
'''显示ajax页面'''
return render(request, 'booktest/test_ajax.html') def ajax_handle(request):
'''ajax请求处理'''
# 返回的json数据 {'res':1}
return JsonResponse({'res':1}) # /login_ajax
def login_ajax(request):
'''显示ajax登录页面'''
return render(request, 'booktest/login_ajax.html') # /login_ajax_check
def login_ajax_check(request):
'''ajax登录校验'''
# 1.获取用户名和密码
username = request.POST.get('username')
password = request.POST.get('password') # 2.进行校验,返回json数据
if username == 'smart' and password == '':
# 用户名密码正确
return JsonResponse({'res':1})
# return redirect('/index') ajax请求在后台，不要返回页面或者重定向
else:
# 用户名或密码错误
return JsonResponse({'res':0}) # /set_cookie
def set_cookie(request):
'''设置cookie信息'''
response = HttpResponse('设置cookie')
# 设置一个cookie信息,名字为num, 值为1
response.set_cookie('num', 1, max_age=14*24*3600)
# response.set_cookie('num2', 2)
# response.set_cookie('num', 1, expires=datetime.now()+timedelta(days=14))
# 返回response
return response # /get_cookie
def get_cookie(request):
'''获取cookie的信息'''
# 取出cookie num的值
num = request.COOKIES['num']
return HttpResponse(num) # /set_session
def set_session(request):
'''设置session'''
request.session['username'] = 'smart'
request.session['age'] = 18
# request.session.set_expiry(5)
return HttpResponse('设置session') # /get_session
def get_session(request):
'''获取session'''
username = request.session['username']
age = request.session['age']
return HttpResponse(username+':'+str(age)) # /clear_session
def clear_session(request):
'''清除session信息'''
# request.session.clear()
request.session.flush()
return HttpResponse('清除成功')
urls.py 内容 from django.conf.urls import url
from booktest import views urlpatterns = [
url(r'^index$', views.index), # 首页
# url(r'^showarg(\d+)$', views.show_arg), # 捕获url参数:位置参数
url(r'^showarg(?P<num>\d+)$', views.show_arg),# 捕获url参数:关键字参数 url(r'^login$', views.login), # 显示登录页面
url(r'^login_check$', views.login_check), # 用户登录校验 url(r'^test_ajax$', views.ajax_test), # 显示ajax页面
url(r'^ajax_handle$', views.ajax_handle), # ajax处理 url(r'^login_ajax$', views.login_ajax), # 显示ajax登录页面
url(r'^login_ajax_check$', views.login_ajax_check), # ajax登录校验 url(r'^set_cookie$', views.set_cookie), # 设置cookie
url(r'^get_cookie$', views.get_cookie), # 获取cookie url(r'^set_session$', views.set_session), # 设置session
url(r'^get_session$', views.get_session), # 获取session
url(r'^clear_session$', views.clear_session), # 清除session
]
展示参数 def show_arg(request, num):
return HttpResponse(num) 判断用户是否登录 request.session.has_key('islogin') 重定向 return redirect('/index') 获取cookie request.COOKIES 获取用户提交的用户名和密码 username = request.POST.get('username')
password = request.POST.get('password') 判断是否需要记住 remember = request.POST.get('remember')
if remember == 'on':
# 设置cookie username，过期时间1周
response.set_cookie('username', username, max_age=7*24*3600) 只要 session中有islogin,就认为用户已登录 request.session['islogin'] = True 返回 JSON 数据 def ajax_handle(request):
'''ajax请求处理'''
# 返回的json数据 {'res':1}
return JsonResponse({'res':1}) 判断是否登录 def login_ajax_check(request):
'''ajax登录校验'''
# 1.获取用户名和密码
username = request.POST.get('username')
password = request.POST.get('password') # 2.进行校验,返回json数据
if username == 'smart' and password == '':
# 用户名密码正确
return JsonResponse({'res':1})
# return redirect('/index') ajax请求在后台，不要返回页面或者重定向
else:
# 用户名或密码错误
return JsonResponse({'res':0}) 设置 cookie 信息 response.set_cookie('num', 1, max_age=14*24*3600) 获取 cookie 信息 num = request.COOKIES['num'] 设置 session 信息
request.session['username'] = 'smart' def set_session(request):
'''设置session'''
request.session['username'] = 'smart'
request.session['age'] = 18
# request.session.set_expiry(5)
return HttpResponse('设置session') 获取 session age = request.session['age'] 清除 session 信息 request.session.flush() def clear_session(request):
'''清除session信息'''
# request.session.clear()
request.session.flush()
return HttpResponse('清除成功')
2020-05-20