1.注解种类

@Component(value="student")
@Service
@Repository
@Controller

2.使用注解扫描包

<context:component-scan base-package="com.cj"></context:component-scan>

package com.cj.spring5;

import org.springframework.stereotype.Component;
@Component(value="student")
public class Student {
    private String name;

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