#socket套接字
import socket
server = socket.socket()
server.bind((‘127.0.0.1‘,8080))
server.listen(5)


while True:
    conn, addr = server.accept()
    data = conn.recv(1024)
    conn.send(b‘HTTP/1.1 200 OK\r\n\r\n‘)
    # print(data)
    data = data.decode(‘utf-8‘)
    current_path = data.split(‘\r\n‘)[0].split(‘ ‘)[1]
    # print(current_path)
    if current_path == ‘/index‘:
        # conn.send(b‘index‘)
        with open(r‘D:\python脱产10期视频\day51\01 纯手撸html文件.html‘,‘rb‘) as f:
            conn.send(f.read())
    elif current_path == ‘/login‘:
        conn.send(b‘login‘)
    else:
        conn.send(b‘hello world!‘)
    conn.close()

#类型转换
data = b‘hello world‘

data = str(data,encoding=‘utf-8‘)
print(data)

data = bytes(data,encoding=‘utf-8‘)
print(data)

def run(env,response):
    """
    env是请求相关的数据
    response是响应相关的数据
    """
    # print(env)
    response(‘200 OK‘,[])
    current_path = env.get(‘PATH_INFO‘)
    # print(current_path)
    # if current_path == ‘/index‘:
    #     return [b‘index‘]
    # elif current_path == ‘/login‘:
    #     return [b‘login‘]
    # 定义一个存储函数名的标志位
    func = None
    for url in urls:
        # 判断当前url在不在元组内
        if url[0] == current_path:
            # 只要匹配上了  就把url后缀对应的函数名赋值给func
            func = url[1]
            # 一旦匹配上 应该立刻退出for循环 节省资源
            break
    # 对变量func做判断
    if func:
        res = func(env)
    else:
        res = errors(env)
    return [res.encode(‘utf-8‘)]


if __name__ == ‘__main__‘:
    server = make_server(‘127.0.0.1‘,8080,run)
    # 实时监测127.0.0.1:8080地址 一旦有客户端来连接 会自动加括号调用run方法
    server.serve_forever()  # 启动服务端

#urls
from 代码.views import *

urls = [
    (‘/index‘,index),
    (‘/login‘,login),
    (‘/reg‘,reg),
    (‘/get_time‘,get_time),
    (‘/get_user‘,get_user),
    (‘/get_db‘,get_db),
]

#views
def index(env):
    return ‘index‘
def login(env):
    return ‘login‘
def errors(env):
    return ‘404 error‘

def reg(env):
    return ‘reg‘

from datetime import datetime


def get_time(env):
    # 借助于时间模块 现在后端获取到时间数据
    current_time = datetime.now().strftime(‘%Y-%m-%d %X‘)
    with open(r‘templates/02 get_time.html‘,‘r‘,encoding=‘utf-8‘) as f:
        data = f.read()  # data其实就是一串字符串  仅此而已!!!
    data = data.replace(‘$$time$$‘,current_time)
    return data



from jinja2 import Template
def get_user(env):
    user_dict = {‘username‘:‘jason‘,‘password‘:‘123‘,‘hobby‘:[‘read‘,‘game‘,‘running‘]}
    with open(r‘templates/03 get_user.html‘,‘r‘,encoding=‘utf-8‘) as f:
        data = f.read()
    temp = Template(data)
    res =  temp.render(data = user_dict)  # 将user_dict传递给前端页面 前端页面通过变量名data就能够获取到该字典
    return res

import pymysql
def get_db(env):
    conn = pymysql.connect(
        host = ‘127.0.0.1‘,
        port = 3306,
        user = ‘root‘,
        password = ‘123‘,
        database = ‘day51‘,
        charset = ‘utf8‘,
        autocommit = True
    )
    cursor = conn.cursor(pymysql.cursors.DictCursor)
    sql = "select * from userinfo"
    affect_rows = cursor.execute(sql)
    data = cursor.fetchall()
    # print(data)
    with open(r‘templates/04 get_db.html‘,‘r‘,encoding=‘utf-8‘) as f:
        data1 = f.read()
    temp = Template(data1)
    res = temp.render(user_list= data)
    return res

"""
版本问题：
django版本问题1.x和2.x(本次以1.11.11为学习对象)
注意事项：
    1.你的计算机的名称不能有中文
    2.文件的命名尽量也不要用中文
    3.一个pycharm窗口只能有一个项目 不要把多个项目放在一个窗口下
"""

#django下载
#命令行内敲：
    pip3 install django==1.11.11
#确认是否下载成功
#命令行内敲：
    django-admin

from django.shortcuts import HttpResponse, render, redirect