一、跨域请求

二、频率访问限制

一、同一个域下的ajax请求访问

url文件

from django.conf.urls import url

from django.contrib import admin

from app01 import views

urlpatterns = [

    url(r'^admin/', admin.site.urls),

    url(r"^index/",views.index),

    url(r"^books/",views.books),

]

views

from django.shortcuts import render,HttpResponse

# Create your views here.

def  index(request):

    return render(request,"index.html")

def books(request):

    import json

    book_list =["西游记","水浒传","金瓶"]

    return HttpResponse(json.dumps(book_list,ensure_ascii=False))

html index文件

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.js"></script>

</head>

<body>

<button class="btn">click</button>

<p>书籍列表：</p>

<p class="book_list"></p>

<script>

    $(".btn").click(function () {

        $.ajax({

            url:"/books/",

            success:function (data) {

                $(".book_list").append(data)

            }



        })

    })

</script>

</body>

</html>

结果为

第二个域的views文件为：

# Create your views here.

def books(request):

    import json

    book_list =["西游记","水浒传","金瓶"]

    HttpResponse(json.dumps(book_list,ensure_ascii=False))

二、跨域访问

将 ajax的访问路径做更改

输出结果为：

解决办法在第二个项目的view文件里做如下更改

# Create your views here.

def books(request):

    import json

    book_list =["西游记","水浒传","金瓶"]

    # return HttpResponse(json.dumps(book_list,ensure_ascii=False))

    obj =HttpResponse(json.dumps(book_list,ensure_ascii=False))

    obj["Access-Control-Allow-Origin"] ="http://127.0.0.1:8000"

    return obj

打印结果：

预检

ajax请求代码

二、频率访问限制

viewS文件

from django.shortcuts import render,HttpResponse

# Create your views here.

from app01 import models

from rest_framework.views import APIView

from rest_framework.serializers import ModelSerializer

from rest_framework.viewsets import ModelViewSet

from django.views import  View

# 序列化组件

class BookModelSerializers(ModelSerializer):

    class Meta:

        model =models.Book

        fields ="__all__"

class PublishModelSeralizers(ModelSerializer):

    class Meta:

        models=models.Publish

        fields ="__all__"

class AuthorModelSeralizers(ModelSerializer):

    class Meta:

        models =models.Author

        fields ="__all__"

# 频率访问组件

from rest_framework.throttling import BaseThrottle

class VisitThrottle(BaseThrottle):

    def allow_request(self,request,view):

        return  False

class BooksModeView(ModelViewSet):

    throttle_classes = [VisitThrottle]

    queryset = models.Book.objects.all()

    serializer_class = BookModelSerializers

案例每隔10秒最多访问3次

from django.shortcuts import render,HttpResponse

# Create your views here.

from app01 import models

from rest_framework.views import APIView

from rest_framework.serializers import ModelSerializer

from rest_framework.viewsets import ModelViewSet

# 序列化组件

class BookModelSerializers(ModelSerializer):

    class Meta:

        model =models.Book

        fields ="__all__"

class PublishModelSeralizers(ModelSerializer):

    class Meta:

        models=models.Publish

        fields ="__all__"

class AuthorModelSeralizers(ModelSerializer):

    class Meta:

        models =models.Author

        fields ="__all__"

# 频率访问组件

from rest_framework.throttling import BaseThrottle

VISIT_RECORD={}

class VisitThrottle(BaseThrottle):

    def __init__(self):

        self.history =[]

    def allow_request(self,request,view):

        remote_addr =request.META.get("REMOTE_ADDR")

        print(remote_addr)

        print(self.get_ident(request))

        import time

        ctime =time.time()

        #IP 第一次访问

        if remote_addr not in VISIT_RECORD:

            VISIT_RECORD[remote_addr] = [ctime,]

            return True

        #查去当前访问IP的访问历史记录

        history =VISIT_RECORD.get(remote_addr)

        self.history =history

        print(self.history)

        if history and ctime - history[-1] > 10:

            history.pop()

        if len(history)<3:

            history.insert(0,ctime)  #索引第一位开始插入

            return True

        else:

            return  False

#显示剩余多少时间可以继续访问

    def wait(self):

        import time

        ctime = time.time()

        return 10 - (ctime - self.history[-1])

class BooksModeView(ModelViewSet):

    throttle_classes = [VisitThrottle,]

    queryset = models.Book.objects.all()

    serializer_class = BookModelSerializers

巴特西

day103 跨域请求与频率访问限制.

一、跨域请求

二、频率访问限制

一、同一个域下的ajax请求访问

二、跨域访问

预检

二、频率访问限制

viewS文件

案例每隔10秒最多访问3次

最新文章

热门文章

巴特西

day103 跨域请求 与频率访问限制.

一、跨域请求

二、频率访问限制

一 、同一个域下的ajax请求访问

二、跨域访问

预检

二、频率访问限制

viewS文件

案例 每隔10秒最多访问3次

最新文章

热门文章

day103 跨域请求与频率访问限制.

一、同一个域下的ajax请求访问

案例每隔10秒最多访问3次