-请求响应Http
- 1.发送Http请求
- 2.服务器接收，根据请求头中的url在路由关系表中进行匹配(从上到下)
- 3.匹配成功后，执行指定的views函数
- URL -> 函数 ==> FBV FUNCTION BASE VIEW 表示url对应视图函数的关系
- URL -> 类 ==> CBV
- 4.业务处理
- - 根据个人需求
- - 操作数据库
- - 原生SQL
- - Django ORM
==> 返回给用户的结果 <==
- 响应内容
- 响应头
- 响应体
1 from django.conf.urls import url 2 from django.contrib import admin 3 from APP01 import views 4 5 urlpatterns = [ 6 url(r'^admin/', admin.site.urls), 7 url(r'^inx$', views.inx), 8 url(r'^inxd$', views.inxd), 9 url(r'^fbv$', views.fbv), 10 url(r'^cbv$', views.CBV.as_view()), #as_view 固定写法 11 ]
1 from django.shortcuts import render,HttpResponse 2 3 # Create your views here. 4 5 6 def inx(request): 7 return HttpResponse("ok") 8 9 def inxd(request): 10 return HttpResponse("ok") 11 12 def fbv(request): 13 if request.method == "GET": 14 return HttpResponse("FBV.GET") 15 elif request.method == "POST": 16 return HttpResponse("FBV.POST") 17 18 from django.views import View 19 20 class CBV(View): 21 def dispatch(self, request, *args, **kwargs): 22 # 可以进行自定制 ，增加一些功能，例如判断登陆 23 print("dispatch...") 24 result = super(CBV,self).dispatch(self, request, *args, **kwargs) 25 return result 26 # django CBV相关的一些函数 27 # http_method_names = ['get', 'post', 'put', 'patch', 'delete', 'head', 'options', 'trace'] 28 def get(self,request): 29 #return render(request, 'cbv.html') 30 return HttpResponse("CBV.GET") 31 32 def post(self,request): 33 # return HttpResponse("CBV.POST") 34 ret = HttpResponse("CBV.POST") 35 ret['h1'] = 'v1' #往响应头加内容 36 ret['h2'] = 'v2' 37 ret.set_cookie('k1','v1') #设置cookie内容 38 ret.set_cookie('k2', 'v2') 39 """ 40 头： 41 h1 = v1 42 h2 = v2 43 cookies：k1 = v1;k2 = v2 44 体: 45 CBV.POST 46 """ 47 return ret
1 def dispatch(self, request, *args, **kwargs): 2 # Try to dispatch to the right method; if a method doesn't exist, 3 # defer to the error handler. Also defer to the error handler if the 4 # request method isn't on the approved list. 5 if request.method.lower() in self.http_method_names: 6 handler = getattr(self, request.method.lower(), self.http_method_not_allowed) 7 else: 8 handler = self.http_method_not_allowed 9 return handler(request, *args, **kwargs)
# CBV 补充
方法名 = getattr(对象，“POST”) -> 获得方法也就是函数
方法名() ->执行
请求和响应
1 ①请求字符串 2 请求头 3 Request URL:https://dig.chouti.com/login request.GET 获取网址上数据 4 Request Method:POST 5 :authority:dig.chouti.com 6 :method:POST 7 :path:/login 8 :scheme:https 9 accept:*/* 10 accept-encoding:gzip, deflate, br 11 accept-language:zh-CN,zh;q=0.9 12 content-length:43 13 content-type:application/x-www-form-urlencoded; charset=UTF-8 14 cookie:gpid=8156deb10f9e496d8b49416e82bfba84; gpsd=0c47e59f4c63637e6318391f89040aa3; JSESSIONID=aaa-wYdnGlAxR49Fre8zw 15 origin:https://dig.chouti.com 16 referer:https://dig.chouti.com/ 17 user-agent:Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36 18 x-requested-with:XMLHttpRequest 19 分隔(分隔头和体作用)： 20 \r\n\r\n 21 请求体 request.body 字符串==》》 字典 request.POST 获取表单数据 22 phone:86242424 23 password:43434343 24 oneMonth:1 25 26 响应字符串 27 响应头 28 cache-control:no-cache 29 content-length:72 30 content-type:text/plain; charset=utf-8 31 date:Tue, 16 Oct 2018 14:19:51 GMT 32 eagleid:7b06074415396995911764020e 33 server:Tengine 34 status:200 35 timing-allow-origin:* 36 vary:Accept-Encoding 37 via:cache5.l2cm12[21,0], cache4.cn633[36,0] 38 分隔(分隔头和体作用)： 39 \r\n\r\n 40 响应体 41 。。。html。。。。
补充：
1 #正则表达式结尾部分加上$，可以防止仅仅匹配部分的情况，导致匹配不了完整链接 2 urlpatterns = [ 3 url(r'^admin/', admin.site.urls), 4 url(r'^inx$', views.inx), 5 url(r'^inxd$', views.inxd) 6 ]
总结：
源码：找到扩展点很重要