<mvc:annotation-driven/> 和有什么区别?和 <context:annotation-config/>在 servlet 中? [英] What's the difference between <mvc:annotation-driven /> and <context:annotation-config /> in servlet?

问题描述

我正在从 Spring 2.5 迁移到 Spring 3.

I am migrating from Spring 2.5 to Spring 3.

他们引入了 <mvc:annotation-driven/> ，它有一些黑魔法.这应该仅在 servlet 配置文件中声明.

They have introduced <mvc:annotation-driven /> which does some black magic. This is expected to be declared in servlet configuration file only.

在 Spring 2.5 中，我刚刚使用了 和 code> 标记在 application-context.xml 和调度程序 servlet 配置 XML 中声明，并带有要扫描的适当基本包.

In Spring 2.5 I have just used <context:annotation-config /> and <context:component-scan base='...'/> tags declared both in application-context.xml and dispatcher servlet configuration XML with appropriate base packages to scan.

所以我想知道 servlet 配置中的 mvc:annotation-driven 和 context:annotation-config 标签之间有什么区别，以及我可以在 Spring 3 配置文件中消除什么?

So I wonder what is the difference between mvc:annotation-driven and context:annotation-config tags in servlet config and what can I eliminate in Spring 3 config files?

推荐答案

<context:annotation-config> 声明了对诸如 @Required、<代码>@Autowired、@PostConstruct 等等.

<context:annotation-config> declares support for general annotations such as @Required, @Autowired, @PostConstruct, and so on.

声明了对注解驱动的 MVC 控制器的显式支持(即 @RequestMapping, @Controller，尽管对这些的支持是默认行为)，以及通过 @Valid 添加对声明性验证的支持和使用 @RequestBody/ResponseBody.

<mvc:annotation-driven /> declares explicit support for annotation-driven MVC controllers (i.e. @RequestMapping, @Controller, although support for those is the default behaviour), as well as adding support for declarative validation via @Valid and message body marshalling with @RequestBody/ResponseBody.

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