Spring中，修改注入的bean名稱

案例：

1）、源碼

UserService.java

public interface UserService {}

UserServiceImpl.java 

@Service
@Transactional
public class UserServiceImpl implements UserService {}

 2）、上下文獲取bean

系統注入bean時的默認名稱是類名，首字符變成小寫。

UserService userService = (UserService)xxx.getBean("userServiceImpl");

若是想修改bean名稱，可經過以下方式：

1）、繼承AnnotationBeanNameGenerator，重寫generateBeanName生成器

public class CustomAnnotationBeanNameGenerator extends AnnotationBeanNameGenerator {

	/** 
	 * (non-Javadoc)
	 * @see org.springframework.context.annotation.AnnotationBeanNameGenerator#generateBeanName(org.springframework.beans.factory.config.BeanDefinition, org.springframework.beans.factory.support.BeanDefinitionRegistry)
	 */
	@Override
	public String generateBeanName(BeanDefinition definition, BeanDefinitionRegistry registry) {
		String beanName = super.generateBeanName(definition, registry);
		return beanName.endsWith("Impl") ? beanName.substring(0, beanName.length() - 4) : beanName;
	}

}

2）、增長sping.xml配置

<context:component-scan base-package="XXX.YYY.***.**" use-default-filters="false"
		name-generator="XXX.YYY.ZZ.CustomAnnotationBeanNameGenerator">
		<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
	</context:component-scan>

3）、上下文獲取Bean

UserService userService = (UserService)xxx.getBean("userService");