spring 如何将 Java-config 类导入 XML-config 以便两个上下文都有 bean？
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How to import Java-config class into XML-config so that both contexts have beans?
提问by Tony Card
I have a project where I need to bootstrap @Configuration java-config classes into the XML configuration.
我有一个项目，我需要将 @Configuration java-config 类引导到 XML 配置中。
To do that, I'm reading that I also need to include the following bean definition (along with the bean definitions of the classes annotated with @Configuration).
为此，我读到我还需要包含以下 bean 定义（以及用 @Configuration 注释的类的 bean 定义）。
<bean class="org.springframework.config.java.process.ConfigurationPostProcessor" />
But, I end up receiving the following error:
但是，我最终收到以下错误：
Caused by: java.lang.ClassNotFoundException: org.springframework.config.java.process.ConfigurationPostProcessor
I have to assume I'm missing a jar somewhere, but my various web searches hasn't resulted in an answer yet. Any help would be greatly appreciated. Thanks.
我不得不假设我在某处丢失了一个罐子，但是我的各种网络搜索还没有得到答案。任何帮助将不胜感激。谢谢。
EDIT: Evidently, I was reading old documentation, which is no longer current. Let me back up. My project contains older XML-based configuration. The newer code is all using 'Java-config'. With that said, the contexts are apparently completely separate. I'd like to 'import' a java-config class into the XML configuration, so that both contexts have those particular beans. Does anyone know how I can do that?
编辑：显然，我正在阅读旧文档，它不再是最新的。让我备份。我的项目包含较旧的基于 XML 的配置。较新的代码全部使用“Java-config”。话虽如此，上下文显然是完全分开的。我想将 java-config 类“导入”到 XML 配置中，以便两个上下文都具有那些特定的 bean。有谁知道我该怎么做？
回答by Tony Card
This actually ended up being fairly simple. To get a Java-config bean definition into the xml-config, simply define the Java-config class as a bean within the XML-config. There are no extra jars necessary.
这实际上最终相当简单。要将 Java-config bean 定义放入 xml-config，只需将 Java-config 类定义为 XML-config 中的 bean。不需要额外的罐子。
@Configuration
public class SomeJavaConfig {
@bean
... [bean definition]
}
inside the XML-config, you define this class as a bean.
在 XML-config 中，您将此类定义为 bean。
<!-- needed to pick up the annotated java-config -->
<context:annotation-config />
<!-- Importing java-config class, which are annotated with @Configuration -->
<bean name="SomeJavaConfig" class="[fully qualified path].SomeJavaConfig" />
The XML-config, which may be part of a different context, now has all the bean definitions defined within the JavaConfig class.
XML-config 可能是不同上下文的一部分，现在具有 JavaConfig 类中定义的所有 bean 定义。
UPDATED- to included Alan Franzoni's comment below in the answer.
更新- 在答案中包含 Alan Franzoni 的评论。
回答by Matthias M
Alternatively to annotation-configyou can use component-scan. Then you do not have to include the Configuration Bean in XML:
或者，annotation-config您可以使用component-scan. 那么您不必在 XML 中包含配置 Bean：
<context:component-scan base-package="[fully qualified package path]" />
See Difference between <context:annotation-config> vs <context:component-scan>for more details.
有关更多详细信息，请参阅<context:annotation-config> 与 <context:component-scan> 之间的区别。
回答by maximdim
Should be in:
应该在：
spring-javaconfig-<version>.jar
