springboot的5种读取配置方式（1）：直接读取bean

傷城~ 2022-05-25 00:11 234阅读 0赞

### 1.直接读取bean： ###

/**
     * 学生实体类
     * 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启动类
     *
     */
    
    @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());
            
        }
    
        /**
         * 声明bean，name为s1
         * @return
         */
        @Bean(name = "s1")
        public Student s1(){
            Student student=new Student("哈哈",12);
            return  student;
    
        }
    
        /**
         * 声明bean,name为ss
         * @return
         */
        @Bean(name = "ss")
        public Student ss(){
            Student student=new Student("哈哈",18);
            return  student;
    
        }
    }

测试结果：

![70][]

不过这种方式是不建议用的，因为这样要写的bean是很多，而且不好，知道下就好。

我的座右铭：不会，我可以学；落后，我可以追赶；跌倒，我可以站起来；我一定行。

[70]: /images/20220525/4e36509f42e84479b727c3239c7a3341.png