django框架中ajax的使用及避开CSRF 验证的方式详解

def user_valid(request):
  name=request.GET.get("name")
  ret=Author.objects.filter(name=name)
  res={"state":True,"msg":""}
  if ret:
    res["state"]=False
    res["msg"]="用户存在"
  import json
  return HttpResponse(json.dumps(res)) #向ajax发送json数据

  
  


ajax请求
send_ajax

用户名：

def user_valid(request):
  name = request.POST.get("name")
  ret=Author.objects.filter(name=name)
  res={"state":True,"msg":""}
  if ret:
    res["state"]=False
    res["msg"]="用户存在"
  import json
  return HttpResponse(json.dumps(res))

  
  


ajax请求
send_ajax


{% csrf_token %} #方式一
用户名：

#urls.py里面
url(r'^login/$',views.LoginView.as_view()),

#views.py
from django.shortcuts import render,HttpResponse,redirect
from django.views.decorators.csrf import csrf_exempt  #导入
# Create your views here.
from rbac.models import UserInfo
from django.views import View
class LoginView(View):
  def get(self,request):
    return render(request,"login.html")
  def post(self,request):
    user=request.POST.get("user")
    pwd=request.POST.get("pwd")
    user=UserInfo.objects.filter(name=user,pwd=pwd).first()
    print(user,user.pk)
    if user:
      request.session["user_id"]=user.pk
      #将用户的权限注册到session中
      permission_list=[]
      ret=user.roles.all().values("permissions__url").distinct()
      for per in ret:
        permission_list.append(per.get("permissions__url"))
      # print(ret)
      request.session["permission_list"]=permission_list
      return HttpResponse("ok")
    return HttpResponse("用户名或密码错误")
  @csrf_exempt #当继承django里面的类时，必须要写一个dispath方式，并写在它上面
  def dispatch(self,*args,**kwargs):
    # return super(LoginView,self).dispatch(*args,**kwargs) #这两个方法都可以
    return super().dispatch(*args, **kwargs)

# urls
from django.views.decorators.csrf import csrf_exempt
   url(r'^login/$',csrf_exempt(views.LoginView.as_view())), #加入到urls里面

#views.py
from django.shortcuts import render,HttpResponse,redirect
# Create your views here.
from rbac.models import UserInfo
from django.views import View
class LoginView(View):
  def get(self,request):
    return render(request,"login.html")
  def post(self,request):
    user=request.POST.get("user")
    pwd=request.POST.get("pwd")
    user=UserInfo.objects.filter(name=user,pwd=pwd).first()
    print(user,user.pk)
    if user:
      request.session["user_id"]=user.pk
      #将用户的权限注册到session中
      permission_list=[]
      ret=user.roles.all().values("permissions__url").distinct()
      for per in ret:
        permission_list.append(per.get("permissions__url"))
      # print(ret)
      request.session["permission_list"]=permission_list
      return HttpResponse("ok")
    return HttpResponse("用户名或密码错误")

def send_ajax(request):
  import json
  return HttpResponse(json.dumps({"name":"xinxin"}))

#index.html



  
  


ajax请求
send_ajax


{% csrf_token %}
用户名：

def send_ajax(request):
  return HttpResponse("{'name':'xinxin'}")

#index.html
　　//指定dataType的情况
  $(".s1").click(function(){
    $.ajax({
      url:"/send_ajax/",
      dataType:"json", //主要T要大写
      success:function(data){
        console.log(data); //Object {name: "xinxin"} 类型发生了变化
        console.log(typeof(data)); // object
      },
      error:function(jqXHR,textStatus,err){
        console.log(err);  //报错打印出错误信息
        console.log("数据错误。。。。。。。") //制定错误信息
      }
    })
  });