Bean的装配方式---XML---设值注入

拼搏现实的明天。 2023-06-07 08:07 2阅读 0赞

User2类

package com.student.assemble;
    
    import java.util.List;
    
    public class User2 {
    	private String username;
    	private Integer password;
    	private List <String> list;
    	//Source + Generate Constructor using Fields 自动生成构造方法
    	
    	@Override
    	public String toString() {
    		return "User2 [username=" + username + ", password=" + password + ", list=" + list + "]";
    	}
    
    	public String getUsername() {
    		return username;
    	}
    
    	public void setUsername(String username) {
    		this.username = username;
    	}
    
    	public Integer getPassword() {
    		return password;
    	}
    
    	public void setPassword(Integer password) {
    		this.password = password;
    	}
    
    	public List<String> getList() {
    		return list;
    	}
    
    	public void setList(List<String> list) {
    		this.list = list;
    	}
    	
    }

bean6 配置文件

<?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.xsd">
    
    	
    
    	<bean id="user2" class="com.student.assemble.User2">
    		<property name="Username"  value="任善文 "></property>
    		<property name="password"  value="54188"></property>
    		<property name="list">
    			<list>
    				<value>"我是你爸爸真伟大 "</value>
    				<value>"我爱你儿子！！！ "</value>
    			</list>
    		</property>
    	</bean>
    </beans>

XmlBeanAssembleTest2：测试类

package com.student.assemble;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.student.instance.constructor.Bean1;
    
    public class XmlBeanAssembleTest2 {
    
    	public static void main(String[] args) {
    		String xmlPath = "com/student/assemble/bean6.xml";
    		ApplicationContext applicationContext =new ClassPathXmlApplicationContext(xmlPath);
    		User2 user =(User2)applicationContext.getBean("user2");
    		System.out.println(user);
    
    	}
    
    }

运行结果：

十月 13, 2019 6:37:38 下午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
    信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@46f7f36a: startup date [Sun Oct 13 18:37:38 CST 2019]; root of context hierarchy
    十月 13, 2019 6:37:38 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
    信息: Loading XML bean definitions from class path resource [com/student/assemble/bean6.xml]
    User2 [username=任善文 , password=54188, list=["我是你爸爸真伟大 ", "我爱你儿子！！！ "]]

测试类在实例化Bean的时候，配置文件的property会通过User的set方法将User类的属性附上值。这就是设值注入的装配方式。