Spring -＞ IOCxml自动装配属性autowire(byName,byType)

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1.配置

<?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"><!--标签名称:autowire描述：控制bean属性是否为“autowired”。这是一个自动的过程，在这个过程中，bean引用不需要显式地编码在xmlbean定义文件中，而是由Spring容器处理依赖关系。--><bean id="automaticConfiguration" class="test10month.test1012.AutomaticConfiguration" autowire="byName"/><!--注释这一行,输出toString的时候类对象就会默认为null--><bean id="subAutomaticConfiguration" class="test10month.test1012.SubAutomaticConfiguration"/>
</beans>

2.类

  private SubAutomaticConfiguration subAutomaticConfiguration;@Overridepublic String toString() {return "AutomaticConfiguration{" + "subAutomaticConfiguration=" + subAutomaticConfiguration + '}';}public void setSubAutomaticConfiguration(SubAutomaticConfiguration subAutomaticConfiguration) {this.subAutomaticConfiguration = subAutomaticConfiguration;}
}class SubAutomaticConfiguration {}

3.测试类

package test10month.test1012;import org.springframework.context.support.ClassPathXmlApplicationContext;/*** 功能描述:* @version 1.0* @className AutomaticConfiguration* @author: 罗德* @create: 2020-10-12 14:50*/
public class AutomaticConfiguration {public static void main(String[] args) {var context = new ClassPathXmlApplicationContext("test10month/test1012/AutomaticConfigurationSpring.xml");var automaticConfiguration = context.getBean("automaticConfiguration", AutomaticConfiguration.class);System.out.println(automaticConfiguration);//AutomaticConfiguration{subAutomaticConfiguration=test10month.test1012.SubAutomaticConfiguration@35ef1869}}