使用@Autowired注解自动注入bean

annotationWire.xml （一定记得配置context:annotation-config/）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">

    <context:annotation-config/>
    <bean id="order" class="com.annotationWire.pojo.Order" p:order="202020124546" />
    <bean id="user" class="com.annotationWire.pojo.User" />
</beans>

User类

package com.annotationWire.pojo;

import lombok.Data;
import org.springframework.beans.factory.annotation.Autowired;

@Data
public class User {
    private String name;
    @Autowired
    private Order order;
}

Order类

package com.annotationWire.pojo;

import lombok.Data;

@Data
public class Order {
    private String order;
}

测试类

package com.annotationWire;

import com.annotationWire.pojo.User;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class TestAnnotation {
    @Test
    public void test(){
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("annotationWire.xml");
        User student = applicationContext.getBean(User.class);
        System.out.println(student);
    }
}

本文地址：https://blog.csdn.net/weixin_44371237/article/details/111958116