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优化ApplicationContextAware

master
xuchengsheng 2023-10-02 14:43:13 +08:00
parent 17e3ff2453
commit b0ab86aac0
2 changed files with 12 additions and 28 deletions
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36
spring-aware-applicationContextAware/README.md
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@ -92,8 +92,8 @@ public class ApplicationContextAwareApplication {
public static void main(String[] args) { public static void main(String[] args) {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class);
MyApplicationContextAware myApplicationContextAware = context.getBean(MyApplicationContextAware.class); MyApplicationContextAware contextAware = context.getBean(MyApplicationContextAware.class);
myApplicationContextAware.publish("hello world"); contextAware.publish("hello world");
} }
} }
``` ```
@ -196,10 +196,10 @@ sequenceDiagram
AbstractBeanFactory->>AbstractAutowireCapableBeanFactory:createBean(beanName,mbd,args)<br>创建Bean AbstractBeanFactory->>AbstractAutowireCapableBeanFactory:createBean(beanName,mbd,args)<br>创建Bean
AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:doCreateBean(beanName,mbd,args)<br>执行Bean创建 AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:doCreateBean(beanName,mbd,args)<br>执行Bean创建
AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:initializeBean(beanName,bean,mbd)<br>负责bean的初始化 AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:initializeBean(beanName,bean,mbd)<br>负责bean的初始化
AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:applyBeanPostProcessorsBeforeInitialization(existingBean, beanName) AbstractAutowireCapableBeanFactory->>AbstractAutowireCapableBeanFactory:applyBeanPostProcessorsBeforeInitialization(existingBean, beanName)<br>调用前置处理器
AbstractAutowireCapableBeanFactory->>ApplicationContextAwareProcessor:postProcessBeforeInitialization(bean,beanName) AbstractAutowireCapableBeanFactory->>ApplicationContextAwareProcessor:postProcessBeforeInitialization(bean,beanName)<br>触发Aware处理
ApplicationContextAwareProcessor->>ApplicationContextAwareProcessor:invokeAwareInterfaces(bean) ApplicationContextAwareProcessor->>ApplicationContextAwareProcessor:invokeAwareInterfaces(bean)<br>执行Aware回调
ApplicationContextAwareProcessor->>MyApplicationContextAware:setApplicationContext(context) ApplicationContextAwareProcessor->>MyApplicationContextAware:setApplicationContext(context)<br>设置应用上下文
AbstractAutowireCapableBeanFactory-->>AbstractBeanFactory:返回Bean对象 AbstractAutowireCapableBeanFactory-->>AbstractBeanFactory:返回Bean对象
AbstractBeanFactory-->>DefaultListableBeanFactory:返回Bean对象 AbstractBeanFactory-->>DefaultListableBeanFactory:返回Bean对象
AnnotationConfigApplicationContext-->>ApplicationContextAwareApplication:初始化完成 AnnotationConfigApplicationContext-->>ApplicationContextAwareApplication:初始化完成
@ -215,8 +215,8 @@ public class ApplicationContextAwareApplication {
public static void main(String[] args) { public static void main(String[] args) {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class);
MyApplicationContextAware myApplicationContextAware = context.getBean(MyApplicationContextAware.class); MyApplicationContextAware contextAware = context.getBean(MyApplicationContextAware.class);
myApplicationContextAware.publish("hello world"); contextAware.publish("hello world");
} }
} }
``` ```
@ -466,24 +466,8 @@ public Object postProcessBeforeInitialization(Object bean, String beanName) thro
```java ```java
private void invokeAwareInterfaces(Object bean) { private void invokeAwareInterfaces(Object bean) {
if (bean instanceof EnvironmentAware) { // ... [代码部分省略以简化]
((EnvironmentAware) bean).setEnvironment(this.applicationContext.getEnvironment());
}
if (bean instanceof EmbeddedValueResolverAware) {
((EmbeddedValueResolverAware) bean).setEmbeddedValueResolver(this.embeddedValueResolver);
}
if (bean instanceof ResourceLoaderAware) {
((ResourceLoaderAware) bean).setResourceLoader(this.applicationContext);
}
if (bean instanceof ApplicationEventPublisherAware) {
((ApplicationEventPublisherAware) bean).setApplicationEventPublisher(this.applicationContext);
}
if (bean instanceof MessageSourceAware) {
((MessageSourceAware) bean).setMessageSource(this.applicationContext);
}
if (bean instanceof ApplicationStartupAware) {
((ApplicationStartupAware) bean).setApplicationStartup(this.applicationContext.getApplicationStartup());
}
// 对ApplicationContextAware接口进行回调 // 对ApplicationContextAware接口进行回调
if (bean instanceof ApplicationContextAware) { if (bean instanceof ApplicationContextAware) {
((ApplicationContextAware) bean).setApplicationContext(this.applicationContext); ((ApplicationContextAware) bean).setApplicationContext(this.applicationContext);

4
spring-aware-applicationContextAware/src/main/java/com/xcs/spring/ApplicationContextAwareApplication.java
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@ -12,7 +12,7 @@ public class ApplicationContextAwareApplication {
public static void main(String[] args) { public static void main(String[] args) {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class); AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(MyConfiguration.class);
MyApplicationContextAware myApplicationContextAware = context.getBean(MyApplicationContextAware.class); MyApplicationContextAware contextAware = context.getBean(MyApplicationContextAware.class);
myApplicationContextAware.publish("hello world"); contextAware.publish("hello world");
} }
} }