xss攻击问题以及如何防范

111 <scripy>alert(111);</scripy>

def add_article(request):

    if request.method=="POST":
        title=request.POST.get(‘title‘)
        article_content=request.POST.get(‘article_content‘)  # 获取评论内容
        user=request.user
        # 使用BeautifulSoup模块
        from bs4 import BeautifulSoup
        # 
        bs=BeautifulSoup(article_content,"html.parser")
        desc=bs.text[0:150]+"..."

        # 过滤非法标签，会寻找到这个页面的所有标签
        for tag in bs.find_all():
            
            print(tag.name)
            # 如果有非法标签
            if tag.name in ["script", "link"]:
                # 使用decompose()删除非法标签
                tag.decompose()

        article_obj=models.Article.objects.create(user=user,title=title,desc=desc)
        models.ArticleDetail.objects.create(content=str(bs),article=article_obj)

        return HttpResponse("添加成功")