#验证登录
def relogin(request):
    #获取用户名与密码带入数据库中查询一下
    name=request.POST.get('username');
    password=request.POST.get('password');
    rs=usertjn.objects.filter(name=name,password=password)
    if rs.exists():
        if rs.count()>0:
            info="登录成功"
        else:
            info="登录失败"
    else:
        info = "登录失败"
    print("rs:",rs)
    return render(request,'login.html',{'info':info})