spring案列——xml配置

一、需要的jar包

spring.jar（官网下载）

commons-logging.jar

二、项目结构

三、entity（实体类）

package com.team.model;

public class User {

	private String username;
	private String password;
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}

}

　　

四、dao

package com.team.dao;

import com.team.model.User;

public interface UserDAO {
public void save(User user);
}

　　

package com.team.dao;

import com.team.model.User;

public class UserDAOImpl implements UserDAO{

	@Override
	public void save(User user) {
		System.out.println("保存");
	}

}

　　

五、service

package com.team.service;

import com.team.model.User;

public interface UserService {
	public void add(User user);
}

　　

package com.team.service;

import com.team.dao.UserDAO;
import com.team.model.User;

public class UserServiceImpl implements UserService{

	private UserDAO userDAO;
	public void add(User user)
	{
		userDAO.save(user);

	}
	public UserDAO getUserDAO() {
		return userDAO;
	}
	public void setUserDAO(UserDAO userDAO) {
		this.userDAO = userDAO;
	}

}

　　

六、beans,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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

 <bean id="u" class="com.team.dao.UserDAOImpl"></bean>

<bean id="userService" class="com.team.service.UserServiceImpl" >
	<property name="userDAO" ref="u"></property>
	</bean>
</beans>

　　

七、test

package com.team.service;

import static org.junit.Assert.*;

import org.junit.Test;
import org.omg.CORBA.portable.ApplicationException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.team.model.User;

public class UserServiceTest {

	@Test
	public void testAdd() {
		//ApplicationContext继承BeanFactory（最根）
		//BeanFactory有的功能，ApplicationContext也有，并且能控制bean的生命周期（BeanFactory不能）
		//ClassPathXmlApplicationContext（）可以放置多个配置文件String[]  比如配置UserService 、TeacherService 多人开发有利
		ApplicationContext ac=new ClassPathXmlApplicationContext("beans.xml");
		UserService userService=(UserService) ac.getBean("userService");
		User u=new User();
		userService.add(u);
	}

}

　　

八、效果