Django 定制验证码

一、图片验证码

方式一：

def get_validCode_img(request):
    path=os.path.join(settings.BASE_DIR,'static','image','1.jpg')
    with open(path,'rb') as f:
        img=f.read()
        return HttpResponse(img)

二、自定义图片验证码磁盘管理

方式二：

def get_validCode_img(request):
    from PIL import Image
    img=Image.new(mode='RGB',size=(120,30),color='green')
    f=open('validCode.png','wb')
    img.save(f,'png')
    with open('validCode.png', 'rb') as f:
        data=f.read()
        return HttpResponse(data)

三、自定义图片验证码内存管理

方式三：

def get_validCode_img(request):
    from io import BytesIO    # 内存管理
    from PIL import Image
    img = Image.new(mode='RGB', size=(120, 30), color='blue')
    f = BytesIO()    # 文件句柄
    img.save(f, 'png')

    data=f.getvalue()

    return HttpResponse(data)

四、自定义图片验证码画图

方式四：

def get_validCode_img(request):
    from io import BytesIO  # 内存管理
    from PIL import Image,ImageDraw,ImageFont
    from random import randint,choice
    color=(randint(0,255),randint(0,255),randint(0,255))
    img = Image.new(mode='RGB', size=(120, 30), color=color)

    draw=ImageDraw.Draw(img,"RGB")
    font=ImageFont.truetype("static/fonts/kumo.ttf",20)

    valid_list=[]
    for i in range(5):
        random_num=str(randint(0,9))
        random_lower=chr(randint(65,90))   # 小写字母
        random_upper=chr(randint(97,122))  # 大写字母

        random_chr=choice([random_num,random_lower,random_upper])
        draw.text([10+i*22,2],random_chr,color=color,font=font)
        valid_list.append(random_chr)

    f = BytesIO()  # 文件句柄
    img.save(f, 'png')
    data = f.getvalue()
    valid_str="".join(valid_list)
    print(valid_str)
    request.session["keepValidCode"]=valid_str
    return HttpResponse(data)　　

字体地址：

https://files.cnblogs.com/files/supery007/blogCMS.rar