1.直接讀取bean：

/**
 * 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;
}

/**
 * springboot啟動類
 *
 */
@SpringBootApplication
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());
}

    /**
     * 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;
}
}

測試結果：

不過這種方式是不建議用的，因為這樣要寫的bean是很多，而且不好，知道下就好。

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。