bean.xml:

注意, 千万不要后面加上 scope="prototype"

UserService.java:

package com.bjsxt.service;import com.bjsxt.dao.UserDAO;import com.bjsxt.model.User;public class UserService {		private UserDAO userDAO;  		public void init() {		System.out.println("init");	}		public void add(User user) {		userDAO.save(user);	}	public UserDAO getUserDAO() {		return userDAO;	}	public void setUserDAO(UserDAO userDAO) {		this.userDAO = userDAO;	}		public UserService(UserDAO userDAO) {		super();		this.userDAO = userDAO;	}		public void destroy() {		System.out.println("destroy");	}}

UserServiceTest.java:

package com.bjsxt.service;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.bjsxt.model.User;//Dependency Injection//Inverse of Controlpublic class UserServiceTest {	@Test	public void testAdd() throws Exception {		ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");						UserService service = (UserService)ctx.getBean("userService");		UserService service2 = (UserService)ctx.getBean("userService");				ctx.destroy();			}}

　　

结果init, init

去掉scope="prototype", 结果就是init, destroy