spring装配bean-导入混合配置

待我称王封你为后i 2021-11-17 03:42 263阅读 0赞

在sprng中各种bean配置方案并非互斥,我们可以将JavaConfig的组件扫描和自动装配或xml配置混合在一起

1.  在Javaconfig中引用xml配置

package soundsystem;
    	
    	import org.springframework.context.annotation.Bean;
    	import org.sprignframewotrk.context.annotation.Configurtaion'
    	
    	@Configuration
    	public class CDConfig{
    		@Bean
    		public CompactDisc compactDisc(){
    			return new SgtPeppers();
    		}
    	}

在CDPlayerConfig引入CDConfig

package soundsystem;
    	
    	import org.springframework.context.annotation.Bean;
    	import org.springframework.context.annotation.Configuration;
    	import org.springframework.context.annotation.Import;
    	
    	
    	@Configuration
    	@Import(CDConfig.class)
    	public class CDPlayerConfig{
    	
    		public CDPlayer cdPlayer(CompactDisc compactDisc){
    			return new CDPlayer(compactDisc);
    		}
    	}

或者不在CDPlayer中使用Import注解,创建一个更高级别的配置类SoundSystemConfig,在这个配置类中使用@Import将两个配置类组合到一起

package soundsystem;
    	import org.springframework.context.annotation.Configuration;
    	import org.springframework.context.annotation.import;
    	@Configuration
    	@Import({CDPlayerConfig.class,CDConfig.class})
    	public class SoundSystem{
    	}

引入xml配置:

xml配置如下:

<bean id="compactDics" class="soundsystem.BlankDisc" p:title="Sgt.Pepper's Lonely Hearts Club Band" p:artist="The Beatles">
    		<propertyname="tracks">
    			<list>
    				<value>Sgt.Pepper's Lonely Hearts Club Band</value>
    				<value>With a Little Help from my friends</valuey>
    			</list>
    		</propert>
    	</bean>

1.  在xml配置中引入JavaConfig

<? xml version="1.0" encoding="UTF-8" ?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xmlns:c="http://www.springframework.org/schema/c"
    	xsi:schemalocation="http://www.springframework.org/schema/beans
    		http://www.springframework.org/schema/beans/spring-beans,xsd">
    		
    	
    	<bean class="soundsystem.CDConfig" />
    	
    	
    	<import resource="cdplayer-config.xml">
    	
    </beans>