Spring学习（16）--- 基于Java类的配置Bean 之 基于泛型的自动装配（spring4新增）

例子：

定义泛型Store

package javabased;

public interface Store<T> {

}

两个实现类StringStore，IntegerStore

package javabased;

public class IntegerStore implements Store<Integer> {

}

package javabased;

public class StringStore implements Store<String> {

}

java config实现bean配置

package javabased;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

@Configuration
public class StoreConfig {

	@Autowired
	private Store<String> s1;

	@Autowired
	private Store<Integer> s2;

	@Bean
	public StringStore stringStore() {
		return new StringStore();
	}

	@Bean
	public IntegerStore integerStore() {
		return new IntegerStore();
	}

	@Bean(name="test_generic")
	public String print(){    //测试
		System.out.println("s1 : "+s1.getClass().getName());
		System.out.println("s2 : "+s2.getClass().getName());
		return "";
	}

}

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="javabased">
        </context:component-scan> 

</beans>

单元测试：

package javabased;

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-beanannotation.xml");
		context.getBean("test_generic");

	}
}

结果：

2015-7-8 15:12:04 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.sup[email protected]: startup date [Wed Jul 08 15:12:04 CST 2015]; root of context hierarchy
2015-7-8 15:12:04 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [spring-beanannotation.xml]
s1 : javabased.StringStore
s2 : javabased.IntegerStore

也可参考（挺详细的）：http://blog.csdn.net/yangxt/article/details/19970323