发一个json格式的post请求。后台打印：
request_data---> {'title': '北京折叠'}
request.POST---> <QueryDict: {}>

request_data---> <QueryDict: {'title': ['北京'], 'price': ['122']}>
request.POST---> <QueryDict: {'title': ['北京'], 'price': ['122']}>

class JSONParser(BaseParser):"""Parses JSON-serialized data."""media_type = 'application/json'renderer_class = renderers.JSONRendererstrict = api_settings.STRICT_JSONdef parse(self, stream, media_type=None, parser_context=None):"""Parses the incoming bytestream as JSON and returns the resulting data."""parser_context = parser_context or {}encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)try:decoded_stream = codecs.getreader(encoding)(stream)parse_constant = json.strict_constant if self.strict else Nonereturn json.load(decoded_stream, parse_constant=parse_constant)except ValueError as exc:raise ParseError('JSON parse error - %s' % six.text_type(exc))

class FormParser(BaseParser):"""Parser for form data."""media_type = 'application/x-www-form-urlencoded'def parse(self, stream, media_type=None, parser_context=None):"""Parses the incoming bytestream as a URL encoded form,and returns the resulting QueryDict."""parser_context = parser_context or {}encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)data = QueryDict(stream.read(), encoding=encoding)return data

class MultiPartParser(BaseParser):"""Parser for multipart form data, which may include file data."""media_type = 'multipart/form-data'def parse(self, stream, media_type=None, parser_context=None):"""Parses the incoming bytestream as a multipart encoded form,and returns a DataAndFiles object.`.data` will be a `QueryDict` containing all the form parameters.`.files` will be a `QueryDict` containing all the form files."""parser_context = parser_context or {}request = parser_context['request']encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)meta = request.META.copy()meta['CONTENT_TYPE'] = media_typeupload_handlers = request.upload_handlerstry:parser = DjangoMultiPartParser(meta, stream, upload_handlers, encoding)data, files = parser.parse()return DataAndFiles(data, files)except MultiPartParserError as exc:raise ParseError('Multipart form parse error - %s' % six.text_type(exc))

 # url(r'authors/$', views.AuthorModelView.as_view({"get":"list","post":"create"}),name="authors"),# url(r'authors/(?P<pk>\d+)/$', views.AuthorModelView.as_view({"get":"retrieve","put":"update","delete":"destroy"}),name="authordetail"),

from django.conf.urls import url,include
from app01 import viewsfrom rest_framework import routers
routers=routers.DefaultRouter()
routers.register("authors",views.AuthorModelView)

url(r'',include(routers.urls)),

from rest_framework.pagination import PageNumberPagination#自己写一个继承分页器，然后自己设置
class MyPageNumberPagination(PageNumberPagination):page_size = 2                    #每个页面显示多少数据page_query_param = "page"        #？page  的名字，默认"page",可以改其他page_size_query_param = "size"   #临时的一个分页数目，虽然最多2条，但是可以临时扩大每页显示的数据数量max_page_size = 3                #虽然临时的可以调，但不能无限大，做一个最大临时限制。class BookView(APIView):# authentication_classes = [TokenAuth]def get(self,request):print(request.user)   #token_obj.user.nameprint(request.auth)   #token_obj.tokenbook_list=Book.objects.all()#加入分页pnp=MyPageNumberPagination()   #分页器实例对象  books_page=pnp.paginate_queryset(book_list,request,self)    #传入数据bs2=BookModelSerializers(books_page,many=True,context={'request': request}) #将分好的数据进行序列化并展示return Response(bs2.data)

from rest_framework.pagination import LimitOffsetPagination

from rest_framework import viewsets
class AuthorModelView(viewsets.ModelViewSet):queryset=Author.objects.all()serializer_class=AuthorModelSerializerspagination_class = MyPageNumberPagination

REST_FRAMEWORK={# "DEFAULT_AUTHENTICATION_CLASSES":["app01.utils.TokenAuth",],# "DEFAULT_PERMISSION_CLASSES":["app01.utils.SVIPPermission",],"PAGE_SIZE":3,
}

from rest_framework.response import Response

from rest_framework.versioning import QueryParameterVersioning,URLPathVersioning

REST_FRAMEWORK={# "DEFAULT_AUTHENTICATION_CLASSES":["app01.utils.TokenAuth",],# "DEFAULT_PERMISSION_CLASSES":["app01.utils.SVIPPermission",],"PAGE_SIZE":1,# 配置全局渲染器（Json格式的，和那种页面形式的）# 'DEFAULT_RENDERER_CLASSES':['rest_framework.renderers.JSONRenderer',]'DEFAULT_VERSION_CLASS':'rest_framework.versioning.QueryParameterVersioning',#使用哪种版本控制'ALLOWED_VERSIONS':['v1','v2'],  #允许的版本'VERSION_PARAM':'version',       #参数'DEFAULT_VERSION':'v1',           #默认版本

}

 url(r'^(?P<version>\w+)/books/$', views.BookView.as_view(),name="books"),

    def get(self,request,*args,**kwargs):print("version",request.version)#print(request.user)   #token_obj.user.name#print(request.auth)   #token_obj.tokenbook_list=Book.objects.all()#加入分页pnp=MyPageNumberPagination()books_page=pnp.paginate_queryset(book_list,request,self)# bs=BookSerializers(book_list,many=True)bs2=BookModelSerializers(books_page,many=True,context={'request': request})# return Response(bs.data)return Response(bs2.data)