前后端分离——博客项目

1 初始化 django 博客项目步骤：

创建新虚拟环境，安装各种包：

$ mkvirtualenv xinjian$ cd xinjian/$ pip install django==1.11.8$ python steup.py install$ pip install PyJWT.whl$ django-admin startproject blog_server

前后端分离——博客项目

2 更改settings.py 设置：

ALLOWED_HOSTS = [‘*‘]
MIDDLEWARE = [    ‘django.middleware.security.SecurityMiddleware‘,    ‘django.contrib.sessions.middleware.SessionMiddleware‘,    ‘corsheaders.middleware.CorsMiddleware‘,    ‘django.middleware.common.CommonMiddleware‘,
将csrf禁用掉    #‘django.middleware.csrf.CsrfViewMiddleware‘,
LANGUAGE_CODE = ‘zh-Hans‘
TIME_ZONE = ‘Asia/Shanghai‘

3 创建数据库：

$ mysql -u root -p创建数据库：create database blog_server default charset utf8 collate utf8_general_ci;

4　　更改settings.py数据库设置：

DATABASES = {
    ‘default‘: {
        ‘ENGINE‘: ‘django.db.backends.mysql‘,
        ‘NAME‘: ‘blog_server‘,
        ‘USER‘: ‘root‘,
        ‘PASSWORD‘: ‘123456‘,
        ‘HOST‘: ‘127.0.0.1‘,
        ‘PORT‘: ‘3306‘
    }
}

5 更改settings.py设置

　 1，INSTALLED_APPS 中添加 corsheaders

　　　　 2，MIDDLEWARE 中添加 corsheaders.middleware.CorsMiddleware
           位置尽量靠前，官方建议 ‘django.middleware.common.CommonMiddleware’ 上方
        3，CORS_ORIGIN_ALLOW_ALL= True  布尔值  如果为True 白名单不启用,写在文件的最后面
        4，CORS_ORIGIN_WHITELIST =[ #指定白名单，一般不用写
            "https://example.com"
        ]
        5, CORS_ALLOW_METHODS = (
                ‘DELETE‘,
                ‘GET‘,
                ‘OPTIONS‘,
                ‘PATCH‘,
                ‘POST‘,
                ‘PUT‘,
                )
        6, CORS_ALLOW_HEADERS = (
                ‘accept-encoding‘,
                ‘authorization‘,
                ‘content-type‘,
                ‘dnt‘,
                ‘origin‘,
                ‘user-agent‘,
                ‘x-csrftoken‘,
                ‘x-requested-with‘,
            )
        7, CORS_PREFLIGHT_MAX_AGE  默认 86400s
        8, CORS_EXPOSE_HEADERS  [] 扩展头
        9, CORS_ALLOW_CREDENTIALS  布尔值， 默认False


 

import os

 

ALLOWED_HOSTS = [‘*‘]


# Application definition

INSTALLED_APPS = [

‘corsheaders‘,
‘user‘
]

MIDDLEWARE = [
‘django.middleware.security.SecurityMiddleware‘,
‘django.contrib.sessions.middleware.SessionMiddleware‘,
‘corsheaders.middleware.CorsMiddleware‘,
‘django.middleware.common.CommonMiddleware‘,
#‘django.middleware.csrf.CsrfViewMiddleware‘,
]

# Database
# https://docs.djangoproject.com/en/1.11/ref/settings/#databases

DATABASES = {
‘default‘: {
‘ENGINE‘: ‘django.db.backends.mysql‘,
‘NAME‘: ‘blog_server‘,
‘USER‘: ‘root‘,
‘PASSWORD‘: ‘123456‘,
‘HOST‘: ‘127.0.0.1‘,
‘PORT‘: ‘3306‘
}
}

LANGUAGE_CODE = ‘zh-Hans‘

TIME_ZONE = ‘Asia/Shanghai‘

USE_I18N = True

USE_L10N = True

USE_TZ = True

STATIC_URL = ‘/static/‘

CORS_ORIGIN_ALLOW_ALL = True

CORS_ALLOW_METHODS = (
‘DELETE‘,
‘GET‘,
‘OPTIONS‘,
‘PATCH‘,
‘POST‘,
‘PUT‘,
)

CORS_ALLOW_HEADERS = (
‘accept-encoding‘,
‘authorization‘,
‘content-type‘,
‘dnt‘,
‘origin‘,
‘user-agent‘,
‘x-csrftoken‘,
‘x-requested-with‘,
)

#关掉路由自动补全
APPEND_SLASH = False

6  blog_server/urls.py：
from django.conf.urls import url, include

from django.contrib import admin
from . import views

urlpatterns = [
    url(r‘^admin/‘, admin.site.urls),
    url(r‘^test_api‘, views.test_api),
    #添加user模块 url映射
    url(r‘v1/users‘, include(‘user.urls‘)),
    #添加btoken模块 url映射, 该模块用登录操作
    url(r‘v1/token‘, include(‘btoken.urls‘))
]

7 新建blog_server/views.py：

from django.http import JsonResponse


def test_api(request):
    #JsonResponse 1,将返回内容序列化成json
    #2,response中添加 content-type: application/json
    return JsonResponse({‘code‘:200})

8 在虚拟环境安装flask

pip install flask

9 创建文件包 client，并创建 flask_client.py文件

iew Code

10 创建client/static/的css, js, images 包，并创建各种文件

11 创建模板：

<!DOCTYPE html>
<html>
<!--
author:guojunyu
date:2019-05
desc:this demo is about blog. PLEASE NOTE:If you have trouble running it ,try any of the other demos or connect with auther.
A ny individuals and organizations and not for commercial use, professiona website for customized web site.
-->
<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="/static/css/login_reglogin.css"/>
    <script src="/static/js/jquery.min.js" type="text/javascript"></script>
        <title>登陆</title>
</head>
<body>
    <div class="bg">
        <img src="/static/images/b.jpg" alt="">
    </div>
    <div class="main">
        <div class="header" >
            <h1>Login!</h1>
        </div>
        <p></p>
            <ul class="right-form">
                <h2>Login:</h2>
                <li><input type="text" class="username" name="username" placeholder="Username" required/></li>
                <li><input type="password" class="password" name="password" placeholder="Password" required/></li>
                <input type="button" value="登录" onclick="login()">
                <div class="clear"> </div>
            </ul>
            <div class="clear"> </div>
    </div>
    
</body>

    <script>
        function login(){
        var username = $(‘.username‘).val()
        var password = $(‘.password‘).val()
        var post_data = {‘username‘:username, ‘password‘:password }

        $.ajax({
        // 请求方式
        type:"post",
        // contentType 
        contentType:"application/json",
        // dataType
        dataType:"json",
        // url
        url:"http://127.0.0.1:8000/v1/tokens",
        // 把JS的对象或数组序列化一个json 字符串
        data:JSON.stringify(post_data),
        // result 为请求的返回结果对象
        success:function (result) {
            if (200 == result.code){
                window.localStorage.setItem(‘dnblog_token‘, result.data.token)
                window.localStorage.setItem(‘dnblog_user‘, result.username)
                alert(‘登陆成功‘)
                refer_url = document.referrer
                //如果是项目内部的请求，回跳到上一步
                if (refer_url.search(‘127.0.0.1‘) != -1){

                    window.location = refer_url;

                }else{

                    window.location =  ‘/‘ + result.username + ‘/topics‘;
                }

            }else{
                alert(result.error)
            }
        }
    });

    }
    </script>

</html>

前后端分离——博客项目

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