drf -- 重新封装的请求类方法和响应类

1.请求类的新方法

request.query_params方法的使用

• 类似request.GET
• 代码示例：

from rest_framework.views import APIView
from rest_framework.response import Response

class StudentAPIView(APIView):

    def get(self,request):
        #访问该接口时传入参数：?user=chen&love=123&love=345
        print(request.query_params)#打印结果：<QueryDict: {'uesr': ['chen'], 'love': ['123', '345']}>
        #可通过get或者getlist方法获取参数里面的值
        print(request.query_params.get('user')) #打印结果：chen
        print(request.query_params.getlist('love')) #打印结果：['123', '345']
        return Response('ok')

request.data方法的使用

• 类似于request.POST和request.FILES的集合体
• 代码示例：

from rest_framework.views import APIView
from rest_framework.response import Response
class StudentAPIView(APIView):
    def post(self,request):

        data = request.data
        #request.data包含了request.POST,request.FILES的功能，还可以用来接收文件
        #上传的文件，会存在内存地址中
        print(data) #打印结果：<QueryDict: {'name': ['chen'], '图片': [<InMemoryUploadedFile: Capture001.png (image/png)>]}>
 
        return Response('ok')

        

新封装的响应类

• 必须继承新的视图类 APIView

from rest_framework.views import APIView
from rest_framework.response import Response
class StudentAPIView(APIView):
    def post(self,request):

        data = request.data
        #request.data包含了request.POST,request.FILES的功能，还可以用来接收文件
        #上传的文件，会存在内存地址中
        print(data) #打印结果：<QueryDict: {'name': ['chen'], '图片': [<InMemoryUploadedFile: Capture001.png (image/png)>]}>
        from rest_framework import status  # 导入该类，可以设置一个有解释的状态码
        res = Response('ok',status=status.HTTP_200_OK)
        res.set_cookie("id",'123') #可以在返回之前设置一个cookie
        res['xxxx'] = 'xxoo' #可以设置一个响应头
   #-------------status中封装的响应状态码-------------------
        '''
        HTTP_100_CONTINUE = 100
        HTTP_101_SWITCHING_PROTOCOLS = 101
        HTTP_200_OK = 200
        HTTP_201_CREATED = 201
        HTTP_202_ACCEPTED = 202
        HTTP_203_NON_AUTHORITATIVE_INFORMATION = 203
        HTTP_204_NO_CONTENT = 204
        HTTP_205_RESET_CONTENT = 205
        HTTP_206_PARTIAL_CONTENT = 206
        HTTP_207_MULTI_STATUS = 207
        HTTP_208_ALREADY_REPORTED = 208
        HTTP_226_IM_USED = 226
        HTTP_300_MULTIPLE_CHOICES = 300
        HTTP_301_MOVED_PERMANENTLY = 301
        HTTP_302_FOUND = 302
        HTTP_303_SEE_OTHER = 303
        HTTP_304_NOT_MODIFIED = 304
        HTTP_305_USE_PROXY = 305
        HTTP_306_RESERVED = 306
        HTTP_307_TEMPORARY_REDIRECT = 307
        HTTP_308_PERMANENT_REDIRECT = 308
        HTTP_400_BAD_REQUEST = 400
        HTTP_401_UNAUTHORIZED = 401
        HTTP_402_PAYMENT_REQUIRED = 402
        HTTP_403_FORBIDDEN = 403
        HTTP_404_NOT_FOUND = 404
        HTTP_405_METHOD_NOT_ALLOWED = 405
        HTTP_406_NOT_ACCEPTABLE = 406
        HTTP_407_PROXY_AUTHENTICATION_REQUIRED = 407
        HTTP_408_REQUEST_TIMEOUT = 408
        HTTP_409_CONFLICT = 409
        HTTP_410_GONE = 410
        HTTP_411_LENGTH_REQUIRED = 411
        HTTP_412_PRECONDITION_FAILED = 412
        HTTP_413_REQUEST_ENTITY_TOO_LARGE = 413
        HTTP_414_REQUEST_URI_TOO_LONG = 414
        HTTP_415_UNSUPPORTED_MEDIA_TYPE = 415
        HTTP_416_REQUESTED_RANGE_NOT_SATISFIABLE = 416
        HTTP_417_EXPECTATION_FAILED = 417
        HTTP_418_IM_A_TEAPOT = 418
        HTTP_422_UNPROCESSABLE_ENTITY = 422
        HTTP_423_LOCKED = 423
        HTTP_424_FAILED_DEPENDENCY = 424
        HTTP_426_UPGRADE_REQUIRED = 426
        HTTP_428_PRECONDITION_REQUIRED = 428
        HTTP_429_TOO_MANY_REQUESTS = 429
        HTTP_431_REQUEST_HEADER_FIELDS_TOO_LARGE = 431
        HTTP_451_UNAVAILABLE_FOR_LEGAL_REASONS = 451
        HTTP_500_INTERNAL_SERVER_ERROR = 500
        HTTP_501_NOT_IMPLEMENTED = 501
        HTTP_502_BAD_GATEWAY = 502
        HTTP_503_SERVICE_UNAVAILABLE = 503
        HTTP_504_GATEWAY_TIMEOUT = 504
        HTTP_505_HTTP_VERSION_NOT_SUPPORTED = 505
        HTTP_506_VARIANT_ALSO_NEGOTIATES = 506
        HTTP_507_INSUFFICIENT_STORAGE = 507
        HTTP_508_LOOP_DETECTED = 508
        HTTP_509_BANDWIDTH_LIMIT_EXCEEDED = 509
        HTTP_510_NOT_EXTENDED = 510
        HTTP_511_NETWORK_AUTHENTICATION_REQUIRED = 511
        '''
        return res