spring简单属性

在配置文件bean.xml中，配置bean的时候初始化属性的值：

<?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="userDAOImpl" class="com.test.dao.impl.UserDAOImpl">
	  	<property name="daoId" value="8"></property>
  		<property name="daoStatus" value="good"></property>
	</bean>
	<bean id="userService" class="com.test.service.UserService">
		<property name="userDAO">
			<ref bean="userDAOImpl" />
		</property>
	</bean>
	
</beans>

 

daoId和daoStatus是UserDAOImpl.java中的成员变量：

package com.test.dao.impl;

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

public class UserDAOImpl implements UserDAO {

	private int daoId;
	private String daoStatus;

	public int getDaoId() {
		return daoId;
	}

	public void setDaoId(int daoId) {
		this.daoId = daoId;
	}

	public String getDaoStatus() {
		return daoStatus;
	}

	public void setDaoStatus(String daoStatus) {
		this.daoStatus = daoStatus;
	}

	public void save(User user) {
		System.out.println("user saved!");
	}
}

 

在jUnit测试类UserServiceTest.java中就可以取出这两个成员变量的初始化值：

package com.test.service;

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

import com.test.dao.impl.UserDAOImpl;

public class UserServiceTest {

	@Test
	public void testAdd() throws Exception {
		ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
		UserService service = (UserService) applicationContext.getBean("userService");
		UserDAOImpl userDAOImpl = (UserDAOImpl) service.getUserDAO();
		System.out.println("daoId = " + userDAOImpl.getDaoId());
		System.out.println("daoStatus = " + userDAOImpl.getDaoStatus());
	}

}