spring 随笔（一） bean & Dependency Injection(三)

package com.xiaohui.myinject2;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
@Repository
public class PersonDaoImpl {
	private DbUtil util;
	@Autowired
	public void setUtil(DbUtil util) {
		this.util = util;
	}
	public void save(){
		System.out.println("save in PersonDaoImpl....");
		util.save();
	}
}

package com.xiaohui.myinject2;

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

@Service
public class PersonServiceImpl {
	private PersonDaoImpl dao;
	@Autowired
	public void setDao(PersonDaoImpl dao) {
		this.dao = dao;
	}
	public void save(){
		System.out.println("PersonServiceImpl save user.....");
		dao.save();
	}
}

package com.xiaohui.myinject2;

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

@Controller
public class PersonAction {
	private PersonServiceImpl service;
	@Autowired
	public void setService(PersonServiceImpl service) {
		System.out.println("save in action.....");
		this.service = service;
	}
	public void execute(){
		service.save();
	}
}

package com.xiaohui.app;

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

import com.xiaohui.myinject2.PersonAction;

public class AppTest {
	@Test
	public void testSpring() throws Exception {
		ApplicationContext ctx = new ClassPathXmlApplicationContext("application.xml");
		PersonAction service = ctx.getBean(PersonAction.class);
		service.execute();
	}
}