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package com.mypackage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.ApplicationContext;
public class MovieRecommender {
@Autowired
private ApplicationContext context;
public MovieRecommender(){
}
//...
}
private Set<MovieCatalog> movieCatalogs;
@Autowired
public void setMovieCatalogs(Set<MovieCatalog> movieCatalogs) {
this.movieCatalogs = movieCatalogs;
}
private Map<String , MovieCatalog> movieCatalog;
@Autowired
public void setMovieCatalog(Map<String, MovieCatalog> movieCatalog) {
this.movieCatalog = movieCatalog;
}
数组及Map的自动注入——例子：
先定义一个BeanInterface接口
package com.multibean;
public interface BeanInterface {
}
在定义两个实现类
package com.multibean;
import org.springframework.stereotype.Component;
@Component
public class BeanInterfaceImpl implements BeanInterface {
}
package com.multibean;
import org.springframework.stereotype.Component;
@Component
public class BeanInterface2Impl implements BeanInterface{
}
定义BeanInvoker实现数组和Map
package com.multibean;
import java.util.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class BeanInvoker {
@Autowired
private List<BeanInterface> list;
@Autowired
private Map<String,BeanInterface> map;
public void say(){
if(null != list){
System.out.println("list...");
for(BeanInterface bean:list){
System.out.println(bean.getClass().getName());
}
}else{
System.out.println("List<BeanInterface> list is null.");
}
if(null != map && 0 != map.size()){
System.out.println("map...");
for(Map.Entry<String,BeanInterface> entry:map.entrySet()){
System.out.println(entry.getKey()+"-----"+entry.getValue().getClass().getName());
}
}else{
System.out.println("Map<String,BeanInterface> map is null.");
}
}
}
XML配置：
<?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:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"> <context:component-scan base-package="com.multibean"> </context:component-scan> </beans>
单元测试：
package com.multibean;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class UnitTest {
@Test
public void test(){
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:spring-beansnnotation.xml");
BeanInvoker beanInvoker = (BeanInvoker)context.getBean("beanInvoker");
beanInvoker.say();
}
}
结果：
七月 06, 2015 10:46:41 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@32482417: startup date [Mon Jul 06 22:46:41 CST 2015]; root of context hierarchy
七月 06, 2015 10:46:41 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [spring-beansnnotation.xml]
list...
com.multibean.BeanInterface2Impl
com.multibean.BeanInterfaceImpl
map...
beanInterface2Impl-----com.multibean.BeanInterface2Impl
beanInterfaceImpl-----com.multibean.BeanInterfaceImpl
@Order注解----例子：
改造一下两个实现类，加上@Order注解
package com.multibean;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
@Order(value = 1)
@Component
public class BeanInterfaceImpl implements BeanInterface {
}
package com.multibean;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
@Order(value = 2)
@Component
public class BeanInterface2Impl implements BeanInterface{
}
测试同上
结果：
七月 06, 2015 10:58:58 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1e397bcb: startup date [Mon Jul 06 22:58:58 CST 2015]; root of context hierarchy
七月 06, 2015 10:58:58 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [spring-beansnnotation.xml]
list...
com.multibean.BeanInterfaceImpl
com.multibean.BeanInterface2Impl
map...
beanInterface2Impl-----com.multibean.BeanInterface2Impl
beanInterfaceImpl-----com.multibean.BeanInterfaceImpl
PS：@Order只针对数组，对于map无效
Spring学习（9）--- @Autowired注解(二)
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原文地址：http://www.cnblogs.com/JsonShare/p/4625667.html
