如何在 Spring 中将两个 ApplicationContext 合并到另一个中？

Question

我的 spring java 模块中有两个上下文

ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(
            "SpringBeans.xml");

和

ClassPathXmlApplicationContext helloContext = new ClassPathXmlApplicationContext("HelloBeans.xml");

有两个不同的 xml 文件。现在我必须从context 获取HelloBeans.xml 的bean，从helloContext 获取SpringBeans.xml 的bean，而不刷新上下文。

Answer 1

找不到我要找的东西，但这是我能做的最好的：

PathMatchingResourcePatternResolver pathMatchingResourcePatternResolver = new PathMatchingResourcePatternResolver(
            context.getClassLoader());
Resource resource = pathMatchingResourcePatternResolver
            .getResource("classpath:HelloBeans.xml");
AutowireCapableBeanFactory factory = context
            .getAutowireCapableBeanFactory();
BeanDefinitionRegistry registry = (BeanDefinitionRegistry) factory;
XmlBeanDefinitionReader xmlReader = new XmlBeanDefinitionReader(
            registry);
xmlReader.loadBeanDefinitions(resource);

Answer 2

您可以创建一个父弹簧上下文文件（例如AllBeans.xml）并导入SpringBeans.xml 和HelloBeans.xml：

<import resource="classpath:SpringBeans.xml" />
<import resource="classpath:HelloBeans.xml" />

代码会变成：

ClassPathXmlApplicationContext SuperContext = new ClassPathXmlApplicationContext("AllBeans.xml");

Answer 3

尝试下面的代码，最后使用“helloContext”：

ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("SpringBeans.xml");
ClassPathXmlApplicationContext helloContext = new ClassPathXmlApplicationContext("HelloBeans.xml");

helloContext.setParent(context);
helloContext.setClassLoader(context.getClassLoader());
helloContext.refresh();
helloContext.registerShutdownHook();