Django序列化Serializers使用详解：从基础到指定字段

听雨眠

发布时间：2026-10-13| 2人浏览过

原创

本文深入解析Django核心序列化工具Serializers，阐述其在前后端分离架构中实现数据交换的作用。通过示例演示如何将ORM模型QuerySet转换为XML或JSON格式，并重点讲解利用fields参数精确控制序列化输出字段的方法，帮助开发者高效处理数据序列化与反序列化任务。

Django序列化概述

本文详细解析Django中Serializers序列化的工作流程，通过具体代码示例展示其应用，为学习和实际开发提供参考。

Django REST Framework (DRF) 的核心价值在于支撑前后端分离的开发模式。

前后端分离开发的关键环节包括：

将数据库模型数据转换为JSON格式，这一过程称为序列化。
将接收到的JSON数据还原为模型对象，这一过程称为反序列化。

Django提供的序列化工具允许开发者将Django模型“翻译”为其他数据格式。通常这些格式为基于文本的数据，主要用于数据交换和传输场景。

基础序列化操作

执行数据序列化操作。

Django内置了强大的序列化工具Serializers，其使用方式直观简便，具体用法如下所示：


from django.core import serializers
data = serializers.serialize("xml", SomeModel.objects.all())


data = serializers.serialize("json", Author.objects.all())
print(data)

[{"model": "index.author", "pk": 1, "fields": {"name": "pfeiliu", "age": 19, "email": "789@163.com", "isActive": false}}, {"model": "index.author", "pk": 5, "fields": {"name": "lao wei", "age": 18, "email": "123@qq.com", "isActive": true}}, {"model": "index.author", "pk": 6, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 7, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 8, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 9, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 10, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 11, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 12, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 13, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}, {"model": "index.author", "pk": 14, "fields": {"name": "WangDB", "age": 36, "email": "wangdb@163.com", "isActive": false}}]

首先，从djang.core模块导入Serializers，随后调用其serialize方法。该方法至少需要两个参数：第一个指定目标数据格式（例如“xml”），第二个指定待序列化的数据对象，通常是一个ORM模型的QuerySet或任何可迭代对象。

整个过程简洁明了。

指定字段序列化

配置序列化指定字段。

若无需序列化模型的所有字段，仅希望输出特定字段，可通过fields参数进行筛选，示例如下：


from django.core import serializers
data = serializers.serialize('xml', SomeModel.objects.all(), fields=('name','size'))


data = serializers.serialize("json", Author.objects.all(),fields=('name','age'))
print(data)

[{"model": "index.author", "pk": 1, "fields": {"name": "pfeiliu", "age": 19}}, {"model": "index.author", "pk": 5, "fields": {"name": "lao wei", "age": 18}}, {"model": "index.author", "pk": 6, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 7, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 8, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 9, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 10, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 11, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 12, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 13, "fields": {"name": "WangDB", "age": 36}}, {"model": "index.author", "pk": 14, "fields": {"name": "WangDB", "age": 36}}]

以上内容为本文的全部讲解，希望能为读者的学习与工作带来帮助，欢迎继续支持本站获取更多技术资源。