做上下文:组件扫描编程方式? [英] Doing context:component-scan programatic way?

问题描述

我目前混合使用 AnnotationConfigApplicationContext 和 ClasspathXmlApplicationContext，并将 AnnotationConfigApplicationContext 作为父上下文.但是我发现 AnnotationConfigApplicationContext 中定义的 bean 不能很好地处理 ClasspathXmlApplicationContext 中定义的 bean.所以我无论如何都想放弃 ClasspathXmlApplicationContext，让我的应用程序只使用 AnnotationConfigApplicationContext.

I'm mixed using AnnotationConfigApplicationContext and ClasspathXmlApplicationContext currently, and make AnnotationConfigApplicationContext as the parent context. But I found that beans defined in AnnotationConfigApplicationContext doesn't cope well with beans defined in ClasspathXmlApplicationContext. So I'd like to drop ClasspathXmlApplicationContext anyway, and make my application use AnnotationConfigApplicationContext only.

问题是，我不知道如何完全替换.我可以使用 AnnotationConfigApplicationContext.scan(...) 轻松进行包扫描，但似乎无法在 AnnotationConfigApplicationContext 中添加包含/排除模式.

The problem is, I don't know how to replace <context:component-scan> totally. I can easily do a package scan using AnnotationConfigApplicationContext.scan(...), but there seems no way to add include/exclude pattern in AnnotationConfigApplicationContext.

有什么想法吗?

推荐答案

它看起来不像类 AnnotationConfigApplicationContext 提供排除/包含过滤器盒子外面.该类在内部使用 ClassPathBeanDefinitionScanner 扫描提供方法 addExcludeFilter 和 addIncludeFilter 的注释.不幸的是，该字段是 private 并且没有 getter 方法，因此您不能只编写扩展 AnnotationConfigApplicationContext 并添加包含和排除方法的实现.相反，您可能必须从 AnnotationConfigApplicationContext 复制代码并添加缺少的方法:

It doesn't look like the class AnnotationConfigApplicationContext provides exclusion/inclusion filters out-of-the-box. Internally the class uses an instance of ClassPathBeanDefinitionScanner to scan for annotations which provides the methods addExcludeFilter and addIncludeFilter. Unfortunately, the field is private and doesn't have a getter method so you can't just write an implementation that extends AnnotationConfigApplicationContext and add include and exclude methods. Instead you'll probably have to copy the code from AnnotationConfigApplicationContext and add the missing methods:

public void addExcludeFilter(TypeFilter excludeFilter) 
{
    this.scanner.addExcludeFilter(excludeFilter);
}

public void addIncludeFilter(TypeFilter includeFilter) 
{
    this.scanner.addIncludeFilter(includeFilter);
}

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