django 之HELLO WORLD

1. 安装PYTHON：

apt-get install python
root@redis1:~# python --version
Python 2.7.12

2. 安装PYTHON 包管理软件PIP：

apt-get install python-pip

3. 安装VIRTUALENV：

apt-get install virtualenv

4. 虚拟一个环境：

virtualenv python
root@redis1:~# . python/bin/activate
(python) root@redis1:~# 

5. 安装DJANGO:

(python) root@redis1:~# pip install django
>>> import django
>>> django.VERSION
(1, 11, 10, u'final', 0)

6. 创建一个项目：

(python) root@redis1:~# django-admin.py startproject study
(python) root@redis1:~# ls -l study/
total 8
-rwxr-xr-x 1 root root  803 Feb  9 06:25 manage.py
drwxr-xr-x 2 root root 4096 Feb  9 06:25 study

7. 创建一个APP：

(python) root@redis1:~# cd study/
(python) root@redis1:~/study# python manage.py startapp myapp
(python) root@redis1:~/study# ls
manage.py  myapp  study
(python) root@redis1:~/study# ls -l myapp/
total 24
-rw-r--r-- 1 root root    0 Feb  9 06:28 __init__.py
-rw-r--r-- 1 root root  128 Feb  9 06:28 admin.py
-rw-r--r-- 1 root root  150 Feb  9 06:28 apps.py
drwxr-xr-x 2 root root 4096 Feb  9 06:28 migrations
-rw-r--r-- 1 root root  122 Feb  9 06:28 models.py
-rw-r--r-- 1 root root  125 Feb  9 06:28 tests.py
-rw-r--r-- 1 root root  128 Feb  9 06:28 views.py

8. 修改项目study下的SETTINGS配置文件：

8.1 增加自己的APP：

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'myapp',
]

8.2 修改时区及语言：

LANGUAGE_CODE = 'zh-cn'

TIME_ZONE = 'Asia/shanghai'

ALLOWED_HOSTS = [*]

9. 增加一个URL列表：

(python) root@redis1:~/study# vi study/urls.py
from django.conf.urls import url
from django.contrib import admin
from myapp import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^myapp/index/$',views.index),
]

10. 修改myapp下的views.py文件，增加视图函数：

(python) root@redis1:~/study# cat myapp/views.py 
# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.shortcuts import render
from django.http import HttpResponse

# Create your views here.

def index(request):
    return HttpResponse("<h1>Hello World!!!!!</h1>")

11. 启动服务，并尝试访问：

(python) root@redis1:~/study# python manage.py runserver 0.0.0.0:8080
Performing system checks...

System check identified no issues (0 silenced).

You have 13 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): admin, auth, contenttypes, sessions.
Run 'python manage.py migrate' to apply them.

February 09, 2018 - 07:01:27
Django version 1.11.10, using settings 'study.settings'
Starting development server at http://0.0.0.0:8080/
Quit the server with CONTROL-C.

[dbadmin@i-rqn56rhe ~]$ curl http://192.168.252.100:8080/myapp/index/
<h1>Hello World!!!!!</h1>

访问原理图：