@ImportResource

导入bean.xml文件，这样就可以还是不把一些配置的xml文件不全通过改成注解方式

（1)创建bean.xml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">
    <!--注入对象-->
    <bean id="user" class="com.daijunyi.springboot1.bean.User"></bean>
</beans>

（2）导入xml文件到配置类

package com.daijunyi.springboot1.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.ImportResource;

@Configuration
@ImportResource("classpath:bean.xml")
public class MyConfig {

}

(3)测试

package com.daijunyi.springboot1;

import com.daijunyi.springboot1.bean.User;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class SpringBoot1Application {

    public static void main(String[] args) {
        ConfigurableApplicationContext run = SpringApplication.run(SpringBoot1Application.class, args);

        boolean user = run.containsBean("user");
        System.out.println("是否存在user:"+user);
    }

}

输出结果

是否存在user:true

Process finished with exit code 0