Django+xadmin打造在線教育平臺(九)
阿新 • • 發佈:2018-04-04
play HR scrip 平臺 eat 網銀 bubuko 404頁 用戶
Django+xadmin打造在線教育平臺(九)
代碼
github下載
十二、首頁和全局404,500配置
12.1.首頁功能
Course添加一個字段
is_banner = models.BooleanField(‘是否輪播‘,default=False)
CourseOrg添加一個字段
tag = models.CharField(‘機構標簽‘,max_length=10,default=‘全國知名‘)
(1)view
class IndexView(View): ‘‘‘首頁‘‘‘ def get(self,request): #輪播圖 all_banners = Banner.objects.all().order_by(‘index‘) #課程 courses = Course.objects.filter(is_banner=False)[:6] #輪播課程 banner_courses = Course.objects.filter(is_banner=True)[:3] #課程機構 course_orgs = Course.objects.all()[:15] return render(request,‘index.html‘,{ ‘all_banners‘:all_banners, ‘courses‘:courses, ‘banner_courses‘:banner_courses, ‘course_orgs‘:course_orgs, })
(2)index.html
{% extends ‘base.html‘ %} {% load staticfiles %} {% block title %}課程機構列表{% endblock %} {% block custom_bread %} {% endblock %} {% block content %} <div class="banner"> <div class="wp"> <div class="fl"> <div class="imgslide"> <ul class="imgs"> {% for banner in all_banners %} <li> <a href="{{ banner.url }}"> <img width="1200" height="478" src="{{ MEDIA_URL }}{{ banner.image }}" /> </a> </li> {% endfor %} </ul> </div> <div class="unslider-arrow prev"></div> <div class="unslider-arrow next"></div> </div> </div> </div> <!--banner end--> <!--feature start--> <section> <div class="wp"> <ul class="feature"> <li class="feature1"> <img class="pic" src="/static/images/feature1.png"/> <p class="center">專業權威</p> </li> <li class="feature2"> <img class="pic" src="/static/images/feature2.png"/> <p class="center">課程最新</p> </li> <li class="feature3"> <img class="pic" src="/static/images/feature3.png"/> <p class="center">名師授課</p> </li> <li class="feature4"> <img class="pic" src="/static/images/feature4.png"/> <p class="center">數據真實</p> </li> </ul> </div> </section> <!--feature end--> <!--module1 start--> <section> <div class="module"> <div class="wp"> <h1>公開課程</h1> <div class="module1 eachmod"> <div class="module1_1 left"> <img width="228" height="614" src="/static/images/module1_1.jpg"/> <p class="fisrt_word">名師授課<br/>專業權威</p> <a class="more" href="{% url ‘course:course_list‘ %}">查看更多課程 ></a> </div> <div class="right group_list"> <div class="module1_2 box"> <div class="imgslide2"> <ul class="imgs"> {% for banner_course in banner_courses %} <li> <a href="{% url ‘course:course_detail‘ banner_course.id %}"> <img width="470" height="300" src="{{ MEDIA_URL }}{{ banner_course.image }}" /> </a> </li> {% endfor %} </ul> </div> <div class="unslider-arrow2 prev"></div> <div class="unslider-arrow2 next"></div> </div> {% for course in courses %} <div class="module1_{{ forloop.counter|add:2 }} box"> <a href="{% url ‘course:course_detail‘ course.id %}"> <img width="233" height="190" src="{{ MEDIA_URL }}{{ course.image }}"/> </a> <div class="des"> <a href="{% url ‘course:course_detail‘ course.id %}"> <h2 title="django入門">{{ course.name }}</h2> </a> <span class="fl">難度:<i class="key">{{ course.get_degree_display }}</i></span> <span class="fr">學習人數:{{ course.students }}</span> </div> <div class="bottom"> <span class="fl" title="慕課網">{{ course.course_org.name }}</span> <span class="star fr">{{ course.fav_nums }}</span> </div> </div> {% endfor %} </div> </div> </div> </div> </section> <section> <div class="module greybg"> <div class="wp"> <h1>課程機構</h1> <div class="module3 eachmod"> <div class="module3_1 left"> <img width="228" height="463" src="/static/images/module3_1.jpg"/> <p class="fisrt_word">名校來襲<br/>權威認證</p> <a class="more" href="{% url ‘org:org_list‘ %}">查看更多機構 ></a> </div> <div class="right"> <ul> {% for org in course_orgs %} <li class="{% if forloop.counter|divisibleby:5 %}five{% endif %}"> <a href="{% url ‘org:org_home‘ org.id %}"> <div class="company"> <img width="184" height="100" src="{{ MEDIA_URL }}{{ org.image }}"/> <div class="score"> <div class="circle"> <h2>{{ org.tag }}</h2> </div> </div> </div> <p><span class="key" title="{{ org.name }}">{{ org.name }}</span></p> </a> </li> {% endfor %} </ul> </div> </div> </div> </div> </section> {% endblock %} {% block custom_js %} <script type="text/javascript" src="{% static ‘js/index.js‘ %}"></script> {% endblock %}
說明1:課程
- 課程分is_banner=False和is_banner=True,兩種課程的class屬性不一樣
- is_banner=True的class是 class="module1_2 box"
- is_banner=True的class是 class="module1_3 box",所以這裏要class="module1_{{ forloop.counter|add:2 }}
說明2:課程機構
- 課程機構的class分為class=""和class="five"
- 這裏要做個判斷,class="{% if forloop.counter|divisibleby:5 %}five{% endif %}
- divisibleby過濾器:能不能整除
說明3:lolgin
- 當登出在login的時候發現剛才的設置都沒生效,看不到圖片,要改一下login的view
- 把之前的登錄之後用render到‘index.html’改為return HttpResponseRedirect(reverse(‘index‘))
12.2.全局配置404和500
(1)MxOnline/urls.py
from MxOnline.settings import STATIC_ROOT urlpatterns = [ #靜態文件 re_path(r‘^static/(?P<path>.*)‘, serve, {"document_root": STATIC_ROOT }), ] # 全局404頁面配置 handler404 = ‘users.views.pag_not_found‘
# 全局500頁面配置
handler500 = ‘users.views.page_error‘
(2)MxOnline/settings.py
DEBUG = False ALLOWED_HOSTS = [‘*‘] #靜態文件 STATIC_ROOT = os.path.join(BASE_DIR, ‘static‘)
(3)users/views.py
from django.shortcuts import render_to_response def pag_not_found(request): # 全局404處理函數 response = render_to_response(‘404.html‘, {}) response.status_code = 404 return response def page_error(request): # 全局500處理函數 from django.shortcuts import render_to_response response = render_to_response(‘500.html‘, {}) response.status_code = 500 return response
說明:
- 404和500,生成環境匯總,必須設置debug = False
- 一旦debug改為false,django就不會代管你的靜態文件,所以這裏要設置一個url處理靜態文件
十三、常見web攻擊與防範
13.1.sql註入攻擊與防範
sql註入的危害
- 非法讀取、篡改、刪除數據庫中的數據
- 盜取用戶的各類敏感信息,獲取利益
- 通過修改數據庫來修改網頁上的內容
- 註入木馬等
sql註入測試代碼
class LoginUnsafeView(View): def get(self, request): return render(request, "login.html", {}) def post(self, request): user_name = request.POST.get("username", "") pass_word = request.POST.get("password", "") import MySQLdb conn = MySQLdb.connect(host=‘127.0.0.1‘, user=‘root‘, passwd=‘root‘, db=‘mxonline‘, charset=‘utf8‘) cursor = conn.cursor() sql_select = "select * from users_userprofile where email=‘{0}‘ and password=‘{1}‘".format(user_name, pass_word) result = cursor.execute(sql_select) for row in cursor.fetchall(): # 查詢到用戶 pass print ‘test‘
urls.py from users.views import LoginUnsafeView urlpatterns = [ url(‘^login/‘, LoginUnsafeView.as_view(), name=‘login‘), ]
在login界面輸入用戶名:‘ OR 1=1# 密碼:123
發現可以獲取到我們數據庫裏面的用戶名和密碼。
13.2.xss攻擊
xss跨站腳本攻擊(Cross Site Scripting)的危害
- 盜取各類用戶賬號,如用戶網銀賬號、各類管理員賬號
- 盜竊企業重要的具有商業價值的資料
- 非法轉賬
- 控制受害者機器向其他網站發起攻擊、註入木馬等等
xss攻擊流程
xss攻擊防護
- 首先代碼裏對用戶輸入的地方和變量都需要仔細檢查長度和對<>;‘等字符做過濾
- 避免直接在cookie中泄漏用戶隱私,例如email、密碼等
- 通過使cookie和系統ip綁定來降低cookie泄漏後的危險
- 盡量采用POST而非GET提交表單
13.3.csrf攻擊
csrf跨站請求偽造(Cross-site request forgery)的危害
- 以你的名義發送郵件
- 盜取你的賬號
- 購買商品
- 虛擬貨幣轉賬
CSRF攻擊流程:
CSRF攻擊防範:
每個form裏面加上 {{csrf_token}}
Django+xadmin打造在線教育平臺(九)