Django REST框架创建一个简单的Api实例讲解
CreateaSimpleAPIUsingDjangoRESTFrameworkinPython
WHATISANAPI
APIstandsforapplicationprogramminginterface.APIbasicallyhelpsonewebapplicationtocommunicatewithanotherapplication.
Let'sassumeyouaredevelopinganandroidapplicationwhichhasfeaturetodetectthenameofafamouspersoninanimage.
Introducetoachievethisyouhave2options:
option1:
Option1istocollecttheimagesofallthefamouspersonalitiesaroundtheworld,buildamachinelearning/deeplearningorwhatevermodelitisanduseitinyourapplication.
option2:
Justusesomeoneelsesmodelusingapitoaddthisfeatureinyourapplication.
LargecompanieslikeGoogle,theyhavetheirownpersonalities.SoifweusetheirApi,wewouldnotknowwhatlogic/codewheyhavewrittinginsideandhowtheyhavetrainedthemodel.Youwillonlybegivenanapi(oranurl).Itworkslikeablackboxwhereyousendyourrequest(inourcaseitstheimage),andyougettheresponse(whichisthenameofthepersoninthatimage)
Hereisanexample:
PREREQUISITES
condainstalljango condainstall-cconda-forgedjangorestframework
Step1
Createthedjangoproject,openthecommandprompttherreandenterthefollowingcommand:
django-adminstartprojectSampleProject
Step2
Navigatetheprojectfolderandcreateawebappusingthecommandline.
pythonmanage.pystartappMyApp
Step3
openthesetting.pyandaddthebelowlinesintoofcodeintheINSTALLED_APPSsection:
'rest_framework', 'MyApp'
Step4
Opentheviews.pyfileinsideMyAppfolderandaddthebelowlinesofcode:
fromdjango.shortcutsimportrender
fromdjango.httpimportHttp404
fromrest_framework.viewsimportAPIView
fromrest_framework.decoratorsimportapi_view
fromrest_framework.responseimportResponse
fromrest_frameworkimportstatus
fromdjango.httpimportJsonResponse
fromdjango.coreimportserializers
fromdjango.confimportsettings
importjson
#Createyourviewshere.
@api_view(["POST"])
defIdealWeight(heightdata):
try:
height=json.loads(heightdata.body)
weight=str(height*10)
returnJsonResponse("Idealweightshouldbe:"+weight+"kg",safe=False)
exceptValueErrorase:
returnResponse(e.args[0],status.HTTP_400_BAD_REQUEST)
Step5
Openurls.pyfileandaddthebelowlinesofcode:
fromdjango.conf.urlsimporturl fromdjango.contribimportadmin fromMyAppimportviews urlpatterns=[ url(r'^admin/',admin.site.urls), url(r'^idealweight/',views.IdealWeight) ]
Step6
Wecanstarttheapiwithbelowcommandsincommandprompt:
pythonmanage.pyrunserver
Finallyopentheurl:
http://127.0.0.1:8000/idealweight/
References:
CreateaSimpleAPIUsingDjangoRESTFrameworkinPython
以上就是本次介绍的关于DjangoREST框架创建一个简单的Api实例讲解内容，感谢大家的学习和对毛票票的支持。
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