Spring Boot 注解详情一

@Value注解@
可以将属性值直接注入到 bean 中

  @Value("张老师")
    private String tname;

    @Value("42")
    private int age;

    @Value("10101")
    private String number;

@Component注解
证明此组件是容器中的组件

@ConfigurationProperties注解
告知springboot本类与配置文件中相关配置绑定

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

import java.util.Arrays;

@Component
@ConfigurationProperties(prefix = "student")
public class Student {

    private String name;

    private String[] hobby;

    private Study study;

    public String getName() {
        return name;
    }

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

    public String[] getHobby() {
        return hobby;
    }

    public void setHobby(String[] hobby) {
        this.hobby = hobby;
    }

    public Study getStudy() {
        return study;
    }

    public void setStudy(Study study) {
        this.study = study;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", hobby=" + Arrays.toString(hobby) +
                ", study=" + study +
                '}';
    }
}

@PropertySource注解
加载指定的配置文件，示例：

@PropertySource(value= {“classpath:student.properties”})

@ImportResource注解
读取自定义配置文件，示例：

@Configuration
@ImportResource(locations = "classpath:teacher.xml")
public class Teacher {

    @Value("张老师")
    private String tname;

    @Value("42")
    private int age;

    @Value("10101")
    private String number;




}

@Bean注解
声明此方法是一个需要被管理的bean

@Configuration
public class BeanConfigure {

    @Bean
    public Teacher teacher(){
        return new Teacher();
    }

}

本文地址：https://blog.csdn.net/Hamlet01/article/details/112280712