Spring Framework 中@Inject 和@Autowired 的区别是什么?在什么条件下使用哪一个? [英] What is the difference between @Inject and @Autowired in Spring Framework? Which one to use under what condition?

问题描述

我正在浏览一些关于 SpringSource 的博客，在其中一个博客中，作者使用的是 @Inject，我想他也可以使用 @Autowired.

I am going through some blogs on SpringSource and in one of the blogs, author is using @Inject and I suppose he can also use @Autowired.

这是一段代码:

@Inject private CustomerOrderService customerOrderService;

我不确定 @Inject 和 @Autowired 之间的区别，如果有人解释它们的区别以及在什么情况下使用哪一个，我将不胜感激?

I am not sure about the difference between @Inject and @Autowired and would appreciate it if someone explained their difference and which one to use under what situation?

推荐答案

假设这里指的是 javax.inject.Inject 注释.@Inject 是 Java CDI (Contexts和依赖注入)标准在 Java EE 6 (JSR-299) 中引入，阅读更多.Spring 选择支持使用 @Inject 注释作为他们自己的 @Autowired 注释的同义词.

Assuming here you're referring to the javax.inject.Inject annotation. @Inject is part of the Java CDI (Contexts and Dependency Injection) standard introduced in Java EE 6 (JSR-299), read more. Spring has chosen to support using the @Inject annotation synonymously with their own @Autowired annotation.

所以，回答你的问题，@Autowired 是 Spring 自己的注解.@Inject 是称为 CDI 的 Java 技术的一部分，该技术定义了类似于 Spring 的依赖注入标准.在 Spring 应用程序中，这两个注解的工作方式与 Spring 决定在它们自己的之外支持一些 JSR-299 注解的方式相同.

So, to answer your question, @Autowired is Spring's own annotation. @Inject is part of a Java technology called CDI that defines a standard for dependency injection similar to Spring. In a Spring application, the two annotations works the same way as Spring has decided to support some JSR-299 annotations in addition to their own.

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