复制代码
-- coding:utf-8 --
from django.shortcuts import HttpResponse
def verifycode(request):
# 引入绘图模块
from PIL import Image,ImageDraw,ImageFont
#引入随机函数模块
import random
#定义变量,用于画面的背景色,宽,高
bgcolor = (random.randrange(20,100),random.randrange(20,100),random.randrange(20,100))
width = 100
height = 50
#创建画面对象
im = Image.new('RGB',(width,height),bgcolor)
#创建画笔对象
draw = ImageDraw.Draw(im)
#调用画笔的point()函数绘制噪点
for i in range(0,100):
#这个是画点
xy = (random.randrange(0,width),random.randrange(0,height))
#这个是颜色的填充
fill = (random.randrange(0,255),255,random.randrange(0,255))
draw.point(xy,fill=fill)
#定义验证码的备用值
str = '1234567890QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm'
#随机选取4个值作为验证码
rand_str = ''
for i in range(0,4):
rand_str += str[random.randrange(0,len(str))]
#构造字体对象 把C盘的字体文件放到其它盘,因为C盘字体文件路径不好找
font = ImageFont.truetype("E:simsunb.ttf", 36)
fontcolor1 = (255, random.randrange(0,255), random.randrange(0,255))
fontcolor2 = (255, random.randrange(0,255), random.randrange(0,255))
fontcolor3 = (255, random.randrange(0,255), random.randrange(0,255))
fontcolor4 = (255, random.randrange(0,255), random.randrange(0,255))
#绘制4个字
draw.text((5,2), rand_str[0], font=font, fill=fontcolor1)
draw.text((25,2), rand_str[1], font=font, fill=fontcolor2)
draw.text((50,2), rand_str[2], font=font, fill=fontcolor3)
draw.text((75,2), rand_str[3], font=font, fill=fontcolor4)
#释放画笔
del draw
# request.session['verifycode'] = rand_str
#内存文件操作
import io
buf = io.BytesIO()
#将图片保存在内存中,文件类型为png
im.save(buf,'png')
#将内存中的图片数据返回给客户端,MIME类型为图片png
return HttpResponse(buf.getvalue(),'image/png')