带验证码的登陆页面：

login页面：

    
          
          
                      
          
      
      
    
       
        
        
            
         
                                {% csrf_token %}                      
          
                        
           用户名                        
                                 
          
                      
          
                        
           密码                        
                                 
          
                      
          
                          
           
 
            
 
             验证码 
              
            
 
           
                          
           
 
             
           
                      
          
                    
          
                          
         
        
        
    
       
      

views页面：

from django.shortcuts import render,HttpResponse,redirectfrom django import forms# Create your views here.from blog.forms import  *from blogCMS import settingsfrom django.contrib import authdef login(request):#登陆页面    # if request.is_ajax():    if request.is_ajax():        username=request.POST.get("username")        password=request.POST.get("password")        validCode=request.POST.get("validCode")        login_response={
    "is_login":False,"error_msg":None}        if validCode.upper()==request.session.get("keepValidCode").upper():            user=auth.authenticate(username=username,password=password)            if user:                login_response["is_login"]=True                auth.login(request,user) #  session   request.session[is_login]=True            else:                login_response["error_msg"] = "username or password error"        else:            login_response["error_msg"]='validCode error'        import json        return HttpResponse(json.dumps(login_response))    return render(request,"login.html")def get_validCode_img(request):#生成验证码的    # 方式1：    # import os    # path= os.path.join(settings.BASE_DIR,"blog","static","img","egon.jpg")    #    # with open(path,"rb") as f:    #     data=f.read()    # 方式2：    # from  PIL import Image    #    # img=Image.new(mode="RGB",size=(120,40),color="green")    #    # f=open("validCode.png","wb")    # img.save(f,"png")    #    # with open("validCode.png","rb") as f:    #     data=f.read()    # 方式3：    # from io import BytesIO    #    # from PIL import Image    # img = Image.new(mode="RGB", size=(120, 40), color="blue")    # f=BytesIO()    # img.save(f,"png")    # data=f.getvalue()    # return HttpResponse(data)    # 方式4 ：    from io import BytesIO    import random    from PIL import Image,ImageDraw,ImageFont    img = Image.new(mode="RGB", size=(120, 40), color=(random.randint(0,255),random.randint(0,255),random.randint(0,255)))    draw=ImageDraw.Draw(img,"RGB")    font=ImageFont.truetype("blog/static/font/kumo.ttf",25)    valid_list=[]    for i in range(5):        random_num=str(random.randint(0,9))        random_lower_zimu=chr(random.randint(65,90))        random_upper_zimu=chr(random.randint(97,122))        random_char=random.choice([random_num,random_lower_zimu,random_upper_zimu])        draw.text([5+i*24,10],random_char,(random.randint(0,255),random.randint(0,255),random.randint(0,255)),font=font)        valid_list.append(random_char)    f=BytesIO()    img.save(f,"png")    data=f.getvalue()    valid_str="".join(valid_list)    print(valid_str)    request.session["keepValidCode"]=valid_str    return HttpResponse(data)    return HttpResponse(data)def index(request):#登陆页面    if not request.user.is_authenticated():        return redirect("/login/")    return render(request,"index.html")def log_out(request):#注销登陆    auth.logout(request)    return redirect("/login/")def article(request):    return render(request,"article.html")

 

 

 

 

注：可以在页面上用找出是谁登陆的

{
  { request.user.username }}
这个是在模板渲染里用