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)

本文内容纲要: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.support.ClassPathXmlApplicationContext@32bf7190: 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

本文内容总结: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)

原文链接:https://www.cnblogs.com/JsonShare/p/4629511.html

以上是 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) 的全部内容, 来源链接: utcz.com/z/296482.html

回到顶部