Spring4学习笔记-泛型依赖注入

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泛型依赖注入

BaseRepository.java

package com.spring.beans.generic.di;public class BaseRepository <T>{}

BaseService.java

package com.spring.beans.generic.di;import org.springframework.beans.factory.annotation.Autowired;public class BaseService <T>{@Autowiredprotected BaseRepository<T>baseRepository;public void add() {System.out.println("add...");System.out.println(baseRepository);}}

UserRepository.java

package com.spring.beans.generic.di;import org.springframework.stereotype.Repository;@Repositorypublic class UserRepository extends BaseRepository<User>{}

UserService.java

package com.spring.beans.generic.di;import org.springframework.stereotype.Service;@Servicepublic class UserService extends BaseService<User>{}

beans-generic-di.xml

<?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:aop="http://www.springframework.org/schema/aop"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/context  http://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.0.xsdhttp://www.springframework.org/schema/aop  http://www.springframework.org/schema/aop/spring-aop-4.0.xsd"><context:component-scan base-package="com.spring.beans.generic.di" ></context:component-scan></beans>

Main.java

public static void main(String[] args) {ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans-generic-di.xml");UserService userService = (UserService) applicationContext.getBean("userService");userService.add();}

输出

2014-9-22 20:20:17 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh

信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@8b819f: startup date [Mon Sep 22 20:20:17 CST 2014]; root of context hierarchy

2014-9-22 20:20:17 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions

信息: Loading XML bean definitions from class path resource [beans-generic-di.xml]

add...

com.spring.beans.generic.di.UserRepository@c01e99

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