关于Spring启动时Context加载源码分析-创新互联

前言

本文主要给大家介绍了关于Spring启动时Context加载的相关内容，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。

测试源码下载test-annotation.zip

有如下的代码

@Component
public class HelloWorldService {
 @Value("${name:World}")
 private String name;
 public String getHelloMessage() {
 return "Hello " + this.name;
 }
}

@Configuration
public class BootStrap {
 @Bean
 public static HelloWorldService helloService() {
 return new HelloWorldService();
 }
 public static void main(String[] args) {
 InstantiationStrategy instantiationStrategy = new SimpleInstantiationStrategy();
 DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
 beanFactory.setInstantiationStrategy(instantiationStrategy);
 AnnotationConfigApplicationContext applicationContext = 
 new AnnotationConfigApplicationContext(beanFactory);
 applicationContext.register(BootStrap.class);
 applicationContext.refresh();
 HelloWorldService service = applicationContext.getBean(HelloWorldService.class);
 System.out.println(service.getHelloMessage());
 applicationContext.close();
 }
}