Django 实现WEB登陆(第一版)

实现环境：

1、System version:rh7.5

2、Python version:2.6.6

3、Django version:1.2.7

创建项目：

1、[root@localhost ~]#django-admin.py startproject mysite

2、[root@localhost mysite]#python manage.py startapp app01

3、[root@localhost mysite]#mkdir templates 

4、[root@localhost mysite templates]#tourch login.html && tourch success.html

文件配置：

settings.py

# Django settings for mysite project.

DEBUG = True

TEMPLATE_DEBUG = DEBUG

ADMINS = (

    # ('Your Name', 'your_email@domain.com'),

)

MANAGERS = ADMINS

DATABASES = {

    'default': {

        'ENGINE': 'django.db.backends.sqlite3' , # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.

        'NAME': 'DATEBASE_NAME',                      # Or path to database file if using sqlite3.

        'USER': 'DATABASE_USER',                      # Not used with sqlite3.

        'PASSWORD': 'DATABASE_PASSWORD',                  # Not used with sqlite3.

        'HOST': 'DATABASE_HOST',                      # Set to empty string for localhost. Not used with sqlite3.

        'PORT': 'DATABASE_OPTIONS',                      # Set to empty string for default. Not used with sqlite3.

    }

}

# Local time zone for this installation. Choices can be found here:

# http://en.wikipedia.org/wiki/List_of_tz_zones_by_name

# although not all choices may be available on all operating systems.

# On Unix systems, a value of None will cause Django to use the same

# timezone as the operating system.

# If running in a Windows environment this must be set to the same as your

# system time zone.

TIME_ZONE = 'America/Chicago'

# Language code for this installation. All choices can be found here:

# http://www.i18nguy.com/unicode/language-identifiers.html

LANGUAGE_CODE = 'en-us'

SITE_ID = 1

# If you set this to False, Django will make some optimizations so as not

# to load the internationalization machinery.

USE_I18N = True

# If you set this to False, Django will not format dates, numbers and

# calendars according to the current locale

USE_L10N = True

# Absolute filesystem path to the directory that will hold user-uploaded files.

# Example: "/home/media/media.lawrence.com/"

MEDIA_ROOT = ''

# URL that handles the media served from MEDIA_ROOT. Make sure to use a

# trailing slash if there is a path component (optional in other cases).

# Examples: "http://media.lawrence.com", "http://example.com/media/"

MEDIA_URL = ''

# URL prefix for admin media -- CSS, JavaScript and p_w_picpaths. Make sure to use a

# trailing slash.

# Examples: "http://foo.com/media/", "/media/".

ADMIN_MEDIA_PREFIX = '/media/'

# Make this unique, and don't share it with anybody.

SECRET_KEY = '&4+fv=q&_#o86a$748*%yolle6&^3(s1#5_k0!!a%q5swwq#uw'

# List of callables that know how to import templates from various sources.

TEMPLATE_LOADERS = (

    'django.template.loaders.filesystem.Loader',

    'django.template.loaders.app_directories.Loader',

#     'django.template.loaders.eggs.Loader',

)

MIDDLEWARE_CLASSES = (

    'django.middleware.common.CommonMiddleware',

    'django.contrib.sessions.middleware.SessionMiddleware',

    #'django.middleware.csrf.CsrfViewMiddleware',

    'django.contrib.auth.middleware.AuthenticationMiddleware',

    'django.contrib.messages.middleware.MessageMiddleware',

)

ROOT_URLCONF = 'mysite.urls'

TEMPLATE_DIRS = (

    "/root/mysite/templates"

    # Put strings here, like "/home/html/django_templates" or "C:/www/django/templates".

    # Always use forward slashes, even on Windows.

    # Don't forget to use absolute paths, not relative paths.

)

INSTALLED_APPS = (

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.sites',

    'django.contrib.messages',

    'app01'

    # Uncomment the next line to enable the admin:

    # Uncomment the next line to enable admin documentation:

    # 'django.contrib.admindocs',

)

models.py

from django.db import models

from django.contrib import admin

# Create your models here.

class User(models.Model):

    username = models.CharField(max_length=50)

    password = models.CharField(max_length=50)

admin.site.register(User)

[root@localhost mysite]#python manage.py syncdb     //同步数据库

fnngj@fnngj-H24X:~/djpy/mysite4$ python manage.py syncdb

Creating tables ...

Creating table django_admin_log

Creating table auth_permission

Creating table auth_group_permissions

Creating table auth_group

Creating table auth_user_groups

Creating table auth_user_user_permissions

Creating table auth_user

Creating table django_content_type

Creating table django_session

Creating table login_user

You just installed Django's auth system, which means you don't have any superusers defined.

Would you like to create one now? (yes/no): yes   输入yes/no

Username (leave blank to use 'root'):     用户名（默认当前系统用户名）

Email address: gswcfl2013@sina.cn     邮箱地址

Password:    密码

Password (again):    确认密码

Superuser created successfully.

Installing custom SQL ...

Installing indexes ...

Installed 0 object(s) from 0 fixture(s)

访问admin

登录用户名和密码为我们进行数据库同步时所设置的信息。

[root@localhost mysite]# python manage.py runserver 0.0.0.0:5000

在这里面填写登陆帐号http://localhost:5000/admin

urls.py

from django.conf.urls.defaults import *

from django.shortcuts import render_to_response

from django.shortcuts import HttpResponse

from django.contrib import admin

from app01 import views

# Uncomment the next two lines to enable the admin:

# from django.contrib import admin

# admin.autodiscover()

urlpatterns = patterns('',

    # Example:

    # (r'^mysite/', include('mysite.foo.urls')),

    # Uncomment the admin/doc line below to enable admin documentation:

    # (r'^admin/doc/', include('django.contrib.admindocs.urls')),

    # Uncomment the next line to enable the admin:

     (r'^admin/', include(admin.site.urls)),

                       (r'^login/',views.login),

                       #(r'^$',views.index),

)

views.py

#-*-codeing:uft8 -*-

# Create your views here.

from django.shortcuts import render_to_response

from django.shortcuts import HttpResponse

from django.http import HttpResponseRedirect

from app01.models import User

from django import forms

class UserForm(forms.Form):

    username = forms.CharField(label='Username:',max_length=100)

    password = forms.CharField(label='Password:',widget=forms.PasswordInput())

def login(request):

    if request.method == 'POST':

        uf = UserForm(request.POST)

        if uf.is_valid():

            username = uf.cleaned_data['username']

            password = uf.cleaned_data['password']

            user = User.objects.filter(username__exact=username,password__exact=password)

            if user:

                return render_to_response('success.html',{'username':username})

            else:

                return HttpResponseRedirect('/login/')

    else:

        uf = UserForm()

    return render_to_response('login.html',{'uf':uf})

login.html

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

    <title>登录</title>

</head>

 <style type="text/css">

    body{color:#efd;background:#453;padding:0 5em;margin:0}

    h2{padding:2em 1em;background:#675}

    h3{color:#bf8;border-top:1px dotted #fff;margin-top:2em}

    p{margin:1em 0}

  </style>

<body>

<h2>登录页面：</h2>

<form method = 'post' enctype="multipart/form-data">

    `uf`.`as_p`

    <input type="submit" value = "ok" />

</form>

</body>

</html>

success.html

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />

    <title></title>

</head>

<body>

    <h2>恭喜`username`,登录成功！</h2>

</form>

</body>

</html>

运行服务：

[root@localhost mysite]# python manage.py runserver 0.0.0.0:5000

在地址栏输入：http://localhost:5000/login