泛型依赖注入

package spring.beans.generic.di;

public class BaseRepository<T> {

}

package spring.beans.generic.di;

import org.springframework.beans.factory.annotation.Autowired;

public class BaseService<T> {
    @Autowired
    protected BaseRepository<T> repository; 
    
    public void add(){
    	System.out.println("add...");
    	System.out.println(repository);  	
    }
}

package spring.beans.generic.di;

public class User {
}

package spring.beans.generic.di;

import org.springframework.stereotype.Repository;

@Repository
public class UserRepository extends BaseRepository<User> {

}

package spring.beans.generic.di;

import org.springframework.stereotype.Service;

@Service
public class UserService extends BaseService<User> {

}

package spring.beans.generic.di;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

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

一月 28, 2016 9:36:52 上午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@1f17ae12: startup date [Thu Jan 28 09:36:52 CST 2016]; root of context hierarchy
一月 28, 2016 9:36:52 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [beans-generic-di.xml]
add...
spring.beans.generic.di.UserRepository@6dde5c8c