学步园

在项目中用到验证码，懒得去找，自己随便写了一个：
views.py:
def get_check_code_image(request,image='media/images/checkcode.gif'):<br /> import Image, ImageDraw, ImageFont, random<br /> im = Image.open(image)<br /> draw = ImageDraw.Draw(im)<br /> mp = md5.new()<br /> mp_src = mp.update(str(datetime.now()))<br /> mp_src = mp.hexdigest()<br /> rand_str = mp_src[0:4]<br /> draw.text((10,10), rand_str[0], font=ImageFont.truetype("ARIAL.TTF", random.randrange(25,50)))<br /> draw.text((48,10), rand_str[1], font=ImageFont.truetype("ARIAL.TTF", random.randrange(25,50)))<br /> draw.text((85,10), rand_str[2], font=ImageFont.truetype("ARIAL.TTF", random.randrange(25,50)))<br /> draw.text((120,10), rand_str[3], font=ImageFont.truetype("ARIAL.TTF", random.randrange(25,50)))<br /> del draw<br /> request.session['checkcode'] = rand_str<br /> buf = cStringIO.StringIO()<br /> im.save(buf, 'gif')<br /> return HttpResponse(buf.getvalue(),'image/gif')  
 
urls.py:
from django.conf.urls.defaults import * </p> <p>urlpatterns = patterns('tracer_server.apps.user.views',<br /> # Uncomment this for admin:<br /> # (r'^admin/', include('django.contrib.admin.urls')), </p> <p> (r'^get_check_code_image/$', 'get_check_code_image'), </p> <p>)   
 
template:
<img onclick="this.setAttribute('src','/user/get_check_code_image/?nocache='+Math.random());" src="/user/get_check_code_image/" mce_src="user/get_check_code_image/" alt="CheckCode"/>  
 
 
原文地址：[url]http://openexperience.javaeye.com/blog/157549[/url]

转者注:
这个例子还需要下载Python Imaging Library(PIL),这里下载最新版本[url]http://www.pythonware.com/products/pil/index.htm#pil116[/url]
还需要导入的模块:from datetime import datetime, import md5, cStringIO