Spring 注解实例--@Autowired 注入到List和Map

package com.Autowired.ListMap;

import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
/**
* order：把实现类排序输出 只适合List
* @author liu
*
*/
@Order(2)
@Component
public class BeanImplOne implements BeanInterface {

}

================================

package com.Autowired.ListMap;

import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;

@Order(1)
@Component
public class BeanImplTwo implements BeanInterface {

}

=====================================

BeanInterface只是一个接口无方法

======================================

package com.Autowired.ListMap;

import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;

@Component
public class BeanInvoke {

@Autowired
private List<BeanInterface> list;

@Autowired
private Map<String,BeanInterface> map;

/** @Autowired默认为byType的  所以有两个相同类型的bean
* 如果不使用 @Qualifier指定具体的bean就会抛出异常
*  private BeanInterface beaninterface;
*/
@Autowired
@Qualifier("beanImplOne")
private BeanInterface beaninterface;
public void say(){
System.out.println("list...");
if(null !=list &&0!=list.size()){
for(BeanInterface bean :list){
System.out.println(bean.getClass().getName());
}

}else{
System.out.println("List<BeanInterface> list is null !!!!");
}
System.out.println();
System.out.println("map...");
if(null !=map &&0!=map.size()){
for(Map.Entry<String, BeanInterface> m:map.entrySet()){
System.out.println(m.getKey()+"    "+m.getValue().getClass().getName());
}
}else{
System.out.println("Map<String,BeanInterface> map is null !!!!");

}
System.out.println("-------------------------");
if(null !=beaninterface){
System.out.println(beaninterface.getClass().getName());
}else{
System.out.println("beaninterface is null !!!");
}
}

}

------------------------------------------------------

配置文件：

<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd" >

<context:component-scan base-package="package com.Autowired.ListMap;"></context:component-scan>

</beans>


-----------------------------------------------------

测试类：

package com.Autowired.ListMap;

import org.junit.Test;

import com.imooc.test.base.UnitTestBase;

public class TestListMap  extends UnitTestBase{
public TestListMap(){
super("classpath*:spring-beanannotation3.xml");
}

@Test
public void test(){
BeanInvoke  bean=super.getBean("beanInvoke");
bean.say();
}
}

结果：

2017-6-4 15:38:26 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@58a17083: startup date [Sun Jun 04 15:38:26 CST 2017]; root of context hierarchy
2017-6-4 15:38:26 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from URL [file:/E:/myeclipse/workspace/Spring2/bin/spring-beanannotation3.xml]
2017-6-4 15:38:27 org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor <init>
信息: JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
list...
2017-6-4 15:38:27 org.springframework.context.support.AbstractApplicationContext doClose
信息: Closing org.springframework.context.support.ClassPathXmlApplicationContext@58a17083: startup date [Sun Jun 04 15:38:26 CST 2017]; root of context hierarchy
com.Autowired.ListMap.BeanImplTwo
com.Autowired.ListMap.BeanImplOne

map...
beanImplOne    com.Autowired.ListMap.BeanImplOne
beanImplTwo    com.Autowired.ListMap.BeanImplTwo
-------------------------
com.Autowired.ListMap.BeanImplOne