什么是java域模型？ [英] What is java domain model?

问题描述

我正在学习一本Spring书，他们提到了java域模型。
这是什么？

I am studying a Spring book and they mention java domain model. What is that?

推荐答案

域模型（该术语根本不是特定于Java的）是一个类模拟问题域中的某些东西，而不是出于技术实现原因而存在的类。

A domain model (the term is not at all Java specific) is a class that models something in the problem domain, as opposed to a class that exists for technical implementation reasons.

域模型实例通常需要保存在数据库中，并且在Java中，它们通常符合Java Beans规范，即它们具有表示单个属性和无参数构造函数的get和set方法。 Spring和其他框架允许您直接在JSP中访问这些属性。

Domain model instances often need to be persisted in a database, and in Java, they typically conform to the Java Beans specification, i.e. they have get and set methods to represent individual properties and a parameterless constructor. Spring and other frameworks allow you to access these properties directly in your JSPs.

例如，在商店应用程序中，您的一些域模型类将是Product，Order， ShoppingCart和Customer。

For example, in a shop application, some of your domain model classes would be Product, Order, ShoppingCart and Customer.

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