我是Django的新手，我想使用AJAX和POST将数据发送到服务器，并检索返回的数据。我知道自成功执行GET请求以来AJAX正常工作，但是当我执行POST请求时，我没有从服务器收到任何响应数据。预先谢谢你。
def validate_username(request):
if request.method == "POST" and request.is_ajax():
description = request.POST.get('the_post')
projects = Project.objects.filter(user__id__icontains = request.user.id).filter(pro_description__icontains = description).values_list('pro_description')
response_data = {}
try:
response_data['result'] = 'Success'
response_data['message'] = list(projects)
except:
response_data['result'] = 'Unsuccessful'
response_data['message'] = 'The Subprocess module did not run the script correctly.'
return HttpResponse(json.dumps(response_data), content_type="application/json")
{% extends 'base.html'%}
<head>
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" integrity="sha384-/Y6pD6FV/Vv2HJnA6t+vslU6fwYXjCFtcEpHbNJ0lyAFsXTsjBbfaDjzALeQsN6M" crossorigin="anonymous">
<!--
{% load static %}
<link rel="stylesheet" href = "{% static 'polls/style.css'%}" type = "text/css">
-->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js" integrity="sha384-h0AbiXch4ZDo7tp9hKZ4TsHbi047NrKGLO3SEJAg45jXxnGIfYzk4Si90RDIqNm1" crossorigin="anonymous"></script>
<title>this is index page!!</title>
</head>
{% block body %}
<div class = "container">
<!-- <form name="search_form" action="{ url 'search' %}" -->
<div class = "pagination">
<input type = "text" id = "talk"></input>
<table class = "table table-hover table-dark">
<div class="container">
<form name="search_form" method="POST">
{% csrf_token %}
<tr>
<td>No<input type = "text" name = "search_no" placeholder = "Search"></input></td>
<td>Section<input type = "text" name = "search_section" id="id_section" placeholder = "Search"></input></td>
<td>Project Description<input type = "text" name = "search" id="search1" placeholder = "Search"></input><button id="submit" type="submit">search</button></td>
<td>Project ID<input type = "text" name = "search_id" placeholder = "Search"></input></td>
<td>Employee Name<input type = "text" name = "search_name" placeholder = "Search"></input></td>
<td>Funding Year<input type = "text" name = "search_year" placeholder = "Search"></input></td>
</tr>
</form>
</div>
{% if projects %}
{% for project in projects%}
<tr>
<td> {{project.pro_no}} </td>
<td scope = "row"><a href = "{% url 'emp_detail' project.id %}">{{project.pro_section}}</a></td>
<td>{{project.pro_description}}</td>
<td>{{project.pro_ID}}</td>
<td>
{% for emp in project.employee.all %}
<table>
<tr><td>{{emp.first_name}}</td></tr>
</table>
{% endfor %}
</td>
<td>
{% for emp in project.employee.all %}
<table>
<tr><td>{{emp.funding_year}}</td></tr>
</table>
{% endfor %}
</td>
</tr>
{% endfor %}
{% endif %}
<span class = "step-links">
{% if projects.has_previous %}
<i class = "fa fa-angle-double-left" style="color:black"></i>
<a href = "?page={{projects.previous_page_number}}">Previous</a>
{% endif %}
<span class = "current">
Page {{projects.number}} of {{projects.paginator.num_pages}}.
</span>
{% if projects.has_next %}
<i class="fa fa-angle-double-right" style="color:black"></i>
<a class="fa fa-angle-double-right" style="color:black" href = "?page={{projects.next_page_number}}">Next</a>
{% endif %}
<span>
</table>
{% block javascript %}
<script>
$("#submit").click(function(e)){
e.preventDefault();
$.ajax({
url: '{% url "validate_username" %}',
type: "POST",
data: {
csrfmiddlewaretoken: csrftoken,
'the_post': $('#search1').val(),
},
success: function(json){
alert(json.message);
},
});
}
</script>
{% endblock %}
</div>
<!-- </form> -->
</div>
<script src="https://code.jquery.com/jquery-3.1.0.min.js"></script>
<!-- <script src="{ static 'scripts/main.js' %}"></script> -->
{% endblock %}
url(r'^ajax/validate_username/$', views.validate_username, name = 'validate_username'),
答案 0 :(得分：0)
我认为ajax数据位于请求正文中。
试试看看是否能获得数据
from django.http import QueryDict
from django.views.decorators.csrf import csrf_exempt
@csrf_exempt
def validate_username(request):
if request.method == "POST" and request.is_ajax():
# The body of the request is in byte form,
# so we decode/convert to string using utf-8 encoding
datastring = request.body.decode("utf-8")
# The data comes in as if it was coming
# from a real form i.e. each field on the model
# comes separated by & e.g. the_post=demo&othefield=4 etc
# use djangos QueryDict to get a dictionary you can easily
# work with.
datadictionary = QueryDict(datastring)
# retrieve value like any other dictionary
description = datadictionary.get("the_post")
projects = Project.objects.filter(user__id__icontains = request.user.id)\
.filter(pro_description__icontains = description)\
.values_list('pro_description')
response_data = {}
try:
response_data['result'] = 'Success'
response_data['message'] = list(projects)
except:
response_data['result'] = 'Unsuccessful'
response_data['message'] = 'The Subprocess module did not run the script correctly.'
return HttpResponse(json.dumps(response_data), content_type="application/json")
请注意，我还在您的方法中添加了装饰器@csrf_exempt，以禁用csrf保护。请阅读如何to set csrf on ajax request