zoukankan      html  css  js  c++  java
  • django的验证码

    前端的配置

     <div class="col-md-6">
            <img class="valid_img" src="/get_valid_img/" alt="" width="200" height="40">
      </div>
    <script>
      $(".valid_img").click(function () {
    {#?相当于刷新了 实现了一点击就换验证码的效果 ?就会重新刷新 就像重新发了一次请求 $(this)当前的jquery的对象 [0]是转换为dom对象 给src重新赋值 加个问号 #}
            $(this)[0].src+="?"
        });
    </script>

    后端views.py的配置

    def get_valid_img(request):
      ####前四步没用
    #第一步 ##上传一个图片 # with open('11.png','rb') as f: # data=f.read() #return HttpResponse(data) #第二步 # #使用Django的绘图模块 PIL来绘图 # from PIL import Image # #绘制图片 大小 颜色 # img = Image.new(mode='RGB', size=(120, 30), color=(155, 252, 125)) # #准备图片文件 用来放绘制图片的信息 # f = open('a.png', 'wb') # img.save(f, "png") # #此时a.png是一张绘制好的图片了 # with open('a.png','rb') as f: # data=f.read() #return HttpResponse(data) #第三步 #使用BytesIO 也不知道是什么 # from io import BytesIO # f=BytesIO() # # from PIL import Image # img = Image.new(mode='RGB', size=(120, 30), color=(0, 255, 0)) # img.save(f,"png") # data=f.getvalue() # return HttpResponse(data) #第四步 # from io import BytesIO # f = BytesIO() # from PIL import Image, ImageDraw, ImageFont # # 画字 # img = Image.new(mode='RGB', size=(120, 30), color=(0, 255, 0)) # draw = ImageDraw.Draw(img, mode='RGB') # font=ImageFont.truetype("cnblog/static/dist/fonts/kumo.ttf",28) # draw.text([15,2],'y',"red",font=font) # # img.save(f,"png") # data=f.getvalue() # return HttpResponse(data) #第五步 #绘图 圈圈 点点 线线 画字 from io import BytesIO f = BytesIO() from PIL import Image, ImageDraw, ImageFont import random img = Image.new(mode='RGB', size=(120, 30), color=(random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))) draw = ImageDraw.Draw(img, mode='RGB') char_list = [] # 画字 for i in range(5): char = random.choice([chr(random.randint(65, 90)), str(random.randint(1, 9)), chr(random.randint(97, 122)), ]) font = ImageFont.truetype("cnblog/static/dist/fonts/kumo.ttf", 28) draw.text([i * 24, 0], char, (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255)), font=font) char_list.append(char) # ========================= width = 120 height = 30 def rndColor(): """ 生成随机颜色 :return: """ return (random.randint(0, 255), random.randint(10, 255), random.randint(64, 255)) # # 写干扰点 # for i in range(40): # draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor()) # # # 写干扰圆圈 # for i in range(40): # draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor()) # x = random.randint(0, width) # y = random.randint(0, height) # draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor()) # # # 画干扰线 # for i in range(5): # x1 = random.randint(0, width) # y1 = random.randint(0, height) # x2 = random.randint(0, width) # y2 = random.randint(0, height) # # draw.line((x1, y1, x2, y2), fill=rndColor()) img.save(f, "png") data = f.getvalue() s = ''.join(char_list) request.session["valid_code"] = s #设置session 是为了登录的时候 拿到cookie 也就是验证码 ''' Dajngo: set_cookie("sessionId","asdsa234asd3sad") in session表 sessionkey sessiondata asdsa234asd3sad {"valid_code":"qqqqq"} ''' return HttpResponse(data)

    views.py里登录函数的配置

    def login(request):
        if request.method=='POST':
            valid=request.POST.get('valid') #拿到验证码
     return render(request,'login.html')
  • 相关阅读:
    UVALive 6909 Kevin's Problem 数学排列组合
    UVALive 6908 Electric Bike dp
    UVALive 6907 Body Building tarjan
    UVALive 6906 Cluster Analysis 并查集
    八月微博
    hdu 5784 How Many Triangles 计算几何,平面有多少个锐角三角形
    hdu 5792 World is Exploding 树状数组
    hdu 5791 Two dp
    hdu 5787 K-wolf Number 数位dp
    hdu 5783 Divide the Sequence 贪心
  • 原文地址:https://www.cnblogs.com/lazyball/p/8022231.html
Copyright © 2011-2022 走看看