1，数据库配置（settings.py文件配置）

我这里用的是本地数据库。

DATABASES = {'default': {'ENGINE': 'django.db.backends.mysql','NAME': 'information','USER': 'root','PASSWORD': '','HOST': '127.0.0.1','PORT': '3306',}
}

NAME是数据库名称，USER是MYSQL账户，PASSWORD是密码，HOST是主机，PORT是端口。

2，数据库查询数据

在views.py文件中：

from django.db import connection
def infor(request):with connection.cursor() as cur:cur.execute('select * from infor;')res = cur.fetchall()# res = cur.fetchone()return HttpResponse('hello!!!')

cur.fetchall()查询到全部数据之后就可以用python操作数据啦。
res = cur.fetchone() 查询某一条数据

3，数据库插入数据

def infor_ajax(request):if request.method == "POST":# 获取前端提交的数据username = request.POST.get("name", 0)age = request.POST.get("age", 0)# 添加到数据库with connection.cursor() as cur:cur.execute('insert into infor values (%s, %s)', (username, age))return render(request, 'index.html')

4，数据库删除数据

def deleteinfor(request):if request.method == "POST":# 获取前端提交的数据name = request.POST.get("name", 0)age = request.POST.get("age", 0)with connection.cursor() as cur:cur.execute("delete * from infor where username=%s",(name))# res = cur.fetchall()return HttpResponse('success!!!')

5，数据库修改更新数据

def updateinfor(request):if request.method == "POST":# 获取前端提交的数据name = request.POST.get("name", 0)age = request.POST.get("age", 0)with connection.cursor() as cur:cur.execute("update infor set username=%s",(name))# res = cur.fetchall()return HttpResponse('success!!!')

6，views.py中return的方式

6.1，return render()

return render(request, 'index.html')
return render(request, 'index.html', {'msg': '提交成功！'})

在html页面中调用则是：{{ msg }}

6.2，return HttpResponse()

return HttpResponse('hello!!!')

6.3，return HttpResponseRedirect()

return HttpResponseRedirect('/index/')
return HttpResponseRedirect('/index/', {'msg': '提交成功！'})