create API app

EduSystemServer/API/admin.py

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+from django.contrib import admin
+
+# Register your models here.

EduSystemServer/API/apps.py

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+from django.apps import AppConfig
+
+
+class ApiConfig(AppConfig):
+    name = 'API'

EduSystemServer/API/models.py

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+from django.db import models
+
+# Create your models here.

EduSystemServer/API/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

EduSystemServer/API/urls.py

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+"""EduSystemServer URL Configuration
+
+The `urlpatterns` list routes URLs to views. For more information please see:
+    https://docs.djangoproject.com/en/2.2/topics/http/urls/
+Examples:
+Function views
+    1. Add an import:  from my_app import views
+    2. Add a URL to urlpatterns:  path('', views.home, name='home')
+Class-based views
+    1. Add an import:  from other_app.views import Home
+    2. Add a URL to urlpatterns:  path('', Home.as_view(), name='home')
+Including another URLconf
+    1. Import the include() function: from django.urls import include, path
+    2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
+"""
+from API import views
+from django.urls import path
+
+urlpatterns = [
+    path("students/", views.student)
+]

EduSystemServer/API/views.py

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+from django.shortcuts import render
+from django.http import JsonResponse
+# Create your views here.
+
+
+def student(request):
+    return JsonResponse({"sid": 1, "sname":"张三"})