SpringBoot手动装载Bean

CustomBeanDefinitionRegistryPostProcessor.java

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.BeansException;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.annotation.AnnotatedGenericBeanDefinition;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionReaderUtils;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
import org.springframework.beans.factory.support.BeanNameGenerator;
import org.springframework.context.annotation.AnnotationBeanNameGenerator;
import org.springframework.context.annotation.AnnotationConfigUtils;
import org.springframework.context.annotation.AnnotationScopeMetadataResolver;
import org.springframework.context.annotation.ScopeMetadata;
import org.springframework.context.annotation.ScopeMetadataResolver;
import com.mallcoo.util.PropertiesManager;

/**
 * 手动注册Bean： 替换原先Spring下使用xml注入bean
 * @author Johnnian
 * 
 * 加载顺序： 
 * 	1、postProcessBeanDefinitionRegistry
 *  2、postProcessBeanFactory： 可以在这里配置自定义的属性
 *
 */
public class CustomBeanDefinitionRegistryPostProcessor implements BeanDefinitionRegistryPostProcessor{

	private ScopeMetadataResolver scopeMetadataResolver = new AnnotationScopeMetadataResolver();
    private BeanNameGenerator beanNameGenerator = new AnnotationBeanNameGenerator();
    
	@Override
	public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
		// TODO Auto-generated method stub
		
		//从BeanFactory拉去Bean
		BeanDefinition bd = beanFactory.getBeanDefinition("propertiesManager");  
        
		//添加属性
		MutablePropertyValues mpv =  bd.getPropertyValues();  
        
        mpv.addPropertyValue("systemPropertiesModeName", "SYSTEM_PROPERTIES_MODE_OVERRIDE");
        mpv.addPropertyValue("ignoreResourceNotFound", true);
       
        List<String>configPath = new ArrayList<>();
        configPath.add("classpath*:/deploy.properties");
        configPath.add("classpath*:/config.properties");        
        mpv.addPropertyValue("locations", configPath);
	}

	@Override
	public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
		// TODO Auto-generated method stub
		//注册：读取属性文件
		registerBean(registry, "propertiesManager", PropertiesManager.class);
	}
	
	/**
	 * 注册Bean
	 * @param registry
	 * @param name
	 * @param beanClass
	 */
	private void registerBean(BeanDefinitionRegistry registry, String name, Class<?> beanClass){
        AnnotatedGenericBeanDefinition abd = new AnnotatedGenericBeanDefinition(beanClass);
        ScopeMetadata scopeMetadata = this.scopeMetadataResolver.resolveScopeMetadata(abd);
        abd.setScope(scopeMetadata.getScopeName());
        String beanName = (name != null ? name : this.beanNameGenerator.generateBeanName(abd, registry));
        AnnotationConfigUtils.processCommonDefinitionAnnotations(abd);
        BeanDefinitionHolder definitionHolder = new BeanDefinitionHolder(abd, beanName);
        BeanDefinitionReaderUtils.registerBeanDefinition(definitionHolder, registry);
    }

}