APIView源码分析

# from rest_framework.views import APIView

# urls.py    
path('booksapiview/', views.BooksAPIView.as_view()),  # 在这个地方应该写一个函数内存地址


# APIView的as_view方法(类的绑定方法)
    @classmethod
    def as_view(cls, **initkwargs):

        view = super().as_view(**initkwargs)  # 调用父类(View)的as_view(**initkwargs)
        view.cls = cls  # 参见下图补充
        view.initkwargs = initkwargs
        # all other authentication is CSRF exempt.
        # 以后所有的请求都没有csrf的认证了，只要继承了APIView,就没有了csrf的认证
        return csrf_exempt(view)
    
# 请求来了--->路由匹配上--->View(request)--->调用了self.dispatch(),会执行apiview的dispatch
   
# APIView的dispatch方法
 def dispatch(self, request, *args, **kwargs):

        self.args = args
        self.kwargs = kwargs
        # self.initialize_request(request, *args, **kwargs) request是当次请求的request
        # request = self.initialize_request  request是一个新的request对象
        # 重新包装成一个request对象，以后再用request对象，就是新的request对象了
        request = self.initialize_request(request, *args, **kwargs)
        self.request = request
        self.headers = self.default_response_headers  # deprecate?

        try:
            # 三大认证模块(详情参见下述内容)
            self.initial(request, *args, **kwargs)

            # Get the appropriate handler method
            if request.method.lower() in self.http_method_names:
                handler = getattr(self, request.method.lower(),
                                  self.http_method_not_allowed)
            else:
                handler = self.http_method_not_allowed

            response = handler(request, *args, **kwargs)

        except Exception as exc:
            response = self.handle_exception(exc)

        self.response = self.finalize_response(request, response, *args, **kwargs)
        return self.response

views.py中    
class BooksAPIView(APIView):
    def get(self, request):
        # request已经不是原生django的request了，是drf自己定义的request对象
        # print(self.request)
        print(request.data)
        return HttpResponse('ok')

# from rest_framework.views import APIView
# urls.pypath('booksapiview/', views.BooksAPIView.as_view()),  # 在这个地方应该写一个函数内存地址

# APIView的as_view方法(类的绑定方法)    @classmethod    def as_view(cls, **initkwargs):
        view = super().as_view(**initkwargs)  # 调用父类(View)的as_view(**initkwargs)        view.cls = cls  # 参见下图补充        view.initkwargs = initkwargs        # all other authentication is CSRF exempt.# 以后所有的请求都没有csrf的认证了，只要继承了APIView,就没有了csrf的认证        return csrf_exempt(view)    # 请求来了--->路由匹配上--->View(request)--->调用了self.dispatch(),会执行apiview的dispatch   # APIView的dispatch方法 def dispatch(self, request, *args, **kwargs):
        self.args = args        self.kwargs = kwargs        # self.initialize_request(request, *args, **kwargs) request是当次请求的request        # request = self.initialize_request  request是一个新的request对象        # 重新包装成一个request对象，以后再用request对象，就是新的request对象了        request = self.initialize_request(request, *args, **kwargs)        self.request = request        self.headers = self.default_response_headers  # deprecate?
        try:            # 三大认证模块(详情参见下述内容)            self.initial(request, *args, **kwargs)
            # Get the appropriate handler method            if request.method.lower() in self.http_method_names:                handler = getattr(self, request.method.lower(),                                  self.http_method_not_allowed)            else:                handler = self.http_method_not_allowed
            response = handler(request, *args, **kwargs)
        except Exception as exc:            response = self.handle_exception(exc)
        self.response = self.finalize_response(request, response, *args, **kwargs)        return self.response
views.py中    class BooksAPIView(APIView):    def get(self, request):        # request已经不是原生django的request了，是drf自己定义的request对象        # print(self.request)        print(request.data)        return HttpResponse('ok')