05-yaml给实体类赋值

最新推荐文章于 2024-05-31 22:08:48 发布

xixihaha_coder

最新推荐文章于 2024-05-31 22:08:48 发布

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分类专栏： springboot 文章标签： spring boot

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本文介绍了如何在Spring Boot中使用@ConfigurationProperties从application.yaml配置文件为Java实体类如Dog和Person设置属性，并探讨了YAML作为首选配置方式的优劣。通过实例演示了如何装配配置和使用@Autowired自动注入。

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yaml给实体类赋值

准备工作

pojo

Dog

//@Component为了更容易被扫描
@Component
public class Dog {
    private String name;
    private Integer age;
//有参无参 setter getter toString
}

Person

@Component
//@ConfigurationProperties(prefix = "person") 相当于绑定了application.yaml里面的person
//爆红的话得加个依赖
@ConfigurationProperties(prefix = "person")
public class Person {
    private String name;
    private Integer age;
    private Boolean happy;
    private Date Birthday;
    private Map<String,Object> maps;
    private List<Object> lists;
    private Dog dog;
    //有参无参 setter getter toString
}

application.yaml

person:
  name: 张三
  age: 3
  happy: false
  birthday: 2020/02/02
  maps: {k1,k2,k3}
  lists:
    - code
    - music
    - girl
  dog:
    name: 旺财
    age: 3

测试

package com.tian;

import com.tian.pojo.Dog;
import com.tian.pojo.Person;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import java.time.Period;

@SpringBootTest
class Springboot03ConfigApplicationTests {
    @Autowired
    //把狗装配过来了
    private Person person;

    @Test
    void contextLoads() {
        System.out.println(person);
    }

}