2.通過config讀取指定檔案：

可以把同一類的bean進行統一管理，然後通過config指定讀取配置檔案

/**
 * 學生實體類
 * Created by ASUS on 2018/5/4
 */
public class Student {
    private String name;
    private  int age;
    public String getName() {
        return name;
}

    public void setName(String name) {
        this.name = name;
}

    public int 
 
getAge() {
        return age;
}

    public void setAge(int age) {
        this.age = age;
}

    public Student(String name, int age) {
        this.name = name;
        this.age = age;
}

    public Student() {
    }

    @Override
public String toString() {
        return "Student{" +
                "name='" 
 
+ name + '\'' +
                ", age=" + age +
                '}';
}
}

/**
 * 把所有的學生bean集中管理類
 * Created by ASUS on 2018/5/4
 */
//預設從根目錄掃描
@Configuration
public class StudentBeans {

    /**
     * 宣告bean，name為s1
     * @return
*/
@Bean(name = "s1")
    public Student s1(){
        Student student=new Student("哈哈"
 
,12);
        return  student;
}

    /**
     * 宣告bean,name為ss
     * @return
*/
@Bean(name = "ss")
    public Student ss(){
        Student student=new Student("哈哈",18);
        return  student;
}
}

/**
 * springboot啟動類
 *
 */
@SpringBootApplication
//掃描指定包路徑
@ComponentScan("springboot.config")
public class Application
{
    public static void main( String[] args )
    {
        ApplicationContext applicationContext= SpringApplication.run(Application.class,args);
Student student= (Student) applicationContext.getBean("s1");
Student student1= (Student) applicationContext.getBean("ss");
System.out.println("message:"+student.toString());
System.out.println("message:"+student1.toString());
}


}

測試結果：

我的座右銘：不會，我可以學；落後，我可以追趕；跌倒，我可以站起來；我一定行。