003-Spring4 扩展分析BeanPostProcessor、BeanFactoryPostProcessor、BeanDefinitionRegistryPostProcessor

一、依赖注入ApplicationContext

方法一、@Autowired

package com.lhx.spring.kuozhan2;

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.stereotype.Component;

@Component
public class MyBeanDefinitionRegistryPostProcessor implements BeanDefinitionRegistryPostProcessor {

@Override
public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
// TODO Auto-generated method stub

}

@Override
public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
for (int i = 0; i < 10; i++) {
BeanDefinitionBuilder rootBeanDefinition = BeanDefinitionBuilder.rootBeanDefinition(Person.class);
rootBeanDefinition.addPropertyValue("name", "admin" + i);
registry.registerBeanDefinition("person" + i, rootBeanDefinition.getBeanDefinition());
}

}

}

public static void main(String[] args) {
AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("com.lhx.spring.kuozhan2");
System.out.println(context.getBean("person1"));
context.getBeansOfType(Person.class).values().forEach(System.out::println);
context.close();
}

AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext("com.lhx.spring.kuozhan2");

context.registerBeanDefinition(beanName, beanDefinition);

beanDefinition定义可以使用：BeanDefinitionBuilder rootBeanDefinition = BeanDefinitionBuilder.rootBeanDefinition(Person.class);