预备知识JSON什么是JSON JSON 指的是 JavaScript 对象表示法（JavaScript Object Notation） JavaScript和python的区别
Django内置的序列化from django.shortcuts import HttpResponse
from django.core import serializers
from app01 import models
def person(request):
ret = models.Person.objects.all()
ret1 = models.Person.objects.all().values()
print(ret)
print(ret1)
s = serializers.serialize('json', ret)
print(s)
return HttpResponse(s)
发请求的方式 1. 直接在地址栏输入URL回车 GET请求 AJAX特点特点 1. 异步 缺点 请求零碎，滥用对服务端压力大 语法$.ajax({
url: '/check/', // 往哪里发
type: 'post', // 以什么方式发
data: {username: $username}, // 发送的数据
success: function (arg) { // 请求得到相应的时候要执行的
console.log(arg);
$(".e1").text(arg).css('color','red')
}
示例 
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>AJAX局部刷新实例</title>
</head>
<body>
<input type="text" id="i1">
<input type="text" id="i2">=
<input type="text" id="i3">
<input type="button" value="AJAX提交" id="b1">
<script src="/static/jquery-3.2.1.min.js"></script>
<script>
$("#b1").on("click", function () {
$.ajax({
url:"/ajax_add/",
type:"GET",
data:{"i1":$("#i1").val(),"i2":$("#i2").val()},
success:function (data) {
$("#i3").val(data);
}
})
})
</script>
</body>
</html>
ajax_demo1.html
from django.shortcuts import render
from django.http import JsonResponse
def ajax_demo1(request):
return render(request, "ajax_demo1.html")
def ajax_add(request):
i1 = int(request.GET.get("i1"))
i2 = int(request.GET.get("i2"))
ret = i1 i2
return JsonResponse(ret, safe=False)
views.py
urlpatterns = [
...
url(r'^ajax_add/', views.ajax_add),
url(r'^ajax_demo1/', views.ajax_demo1),
...
]
urls.py
如何设置csrf_token方式一通过获取隐藏的input标签中的csrfmiddlewaretoken值，放置在data中发送。 $.ajax({
url: "/cookie_ajax/",
type: "POST",
data: {
"username": "Q1mi",
"password": 123456,
"csrfmiddlewaretoken": $("[name = 'csrfmiddlewaretoken']").val() // 使用jQuery取出csrfmiddlewaretoken的值，拼接到data中
},
success: function (data) {
console.log(data);
}
})
方式二自己写一个js文件获取返回的cookie中的字符串 放置在请求头中发送。 放在/static/
function getCookie(name) {
var cookieValue = null;
if (document.cookie && document.cookie !== '') {
var cookies = document.cookie.split(';');
for (var i = 0; i < cookies.length; i ) {
var cookie = jQuery.trim(cookies[i]);
// Does this cookie string begin with the name we want?
if (cookie.substring(0, name.length 1) === (name '=')) {
cookieValue = decodeURIComponent(cookie.substring(name.length 1));
break;
}
}
}
return cookieValue;
}
var csrftoken = getCookie('csrftoken');
function csrfSafeMethod(method) {
// these HTTP methods do not require CSRF protection
return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
}
$.ajaxSetup({
beforeSend: function (xhr, settings) {
if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
xhr.setRequestHeader("X-CSRFToken", csrftoken);
}
}
});
setupajax.js
用到AJAX的请求方式为post时候,提前导入一下文件即可 <script src="/static/setupajax.js"></script> 来源：http://www./content-4-41401.html |
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