#k=v
#对空格的严格要求十分高
#注入到我们的配置类中
#普通的key=value
name: qinjiang#对象
student:name: qingjiangage: 3#行内写法
student1: {name: qinjiang,age: 3}#数组
pets:- cat- dog- pigpet: [cat,dog,pig]

 yaml可以给实体类赋值

person:name: kuangshenage: 19happy: falsebitth: 2023/07/23maps: {k1: v1,k2: v2}lists:- sing- dance- girldog:name: 旺财age: 19

package com.kuang.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;import java.util.Date;
import java.util.List;
import java.util.Map;
@Component
@ConfigurationProperties(prefix = "person")
public class Person {private String name;private Integer age;private Boolean happy;private Date bitth;private Map<String,Object> maps;private List<Object> lists;private Dog dog;public Person() {}public Person(String name, Integer age, Boolean happy, Date bitth, Map<String, Object> maps, List<Object> lists, Dog dog) {this.name = name;this.age = age;this.happy = happy;this.bitth = bitth;this.maps = maps;this.lists = lists;this.dog = dog;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public Boolean getHappy() {return happy;}public void setHappy(Boolean happy) {this.happy = happy;}public Date getBitth() {return bitth;}public void setBitth(Date bitth) {this.bitth = bitth;}public Map<String, Object> getMaps() {return maps;}public void setMaps(Map<String, Object> maps) {this.maps = maps;}public List<Object> getLists() {return lists;}public void setLists(List<Object> lists) {this.lists = lists;}public Dog getDog() {return dog;}public void setDog(Dog dog) {this.dog = dog;}@Overridepublic String toString() {return "Person{" +"name='" + name + '\'' +", age=" + age +", happy=" + happy +", bitth=" + bitth +", maps=" + maps +", lists=" + lists +", dog=" + dog +'}';}
}

package com.kuang.pojo;import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;import java.util.Date;
import java.util.List;
import java.util.Map;
@Component
@ConfigurationProperties(prefix = "person")
//加载指定配置文件
//javaConfig 绑定我们配置文件的值，可以采取这些方式！
//@PropertySource(value = "classpath:qingjiang.properties")
public class Person {//spEL表达式取值 ${key}// @Value("${name}")private String name;private Integer age;private Boolean happy;private Date bitth;private Map<String,Object> maps;private List<Object> lists;private Dog dog;public Person() {}public Person(String name, Integer age, Boolean happy, Date bitth, Map<String, Object> maps, List<Object> lists, Dog dog) {this.name = name;this.age = age;this.happy = happy;this.bitth = bitth;this.maps = maps;this.lists = lists;this.dog = dog;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Integer getAge() {return age;}public void setAge(Integer age) {this.age = age;}public Boolean getHappy() {return happy;}public void setHappy(Boolean happy) {this.happy = happy;}public Date getBitth() {return bitth;}public void setBitth(Date bitth) {this.bitth = bitth;}public Map<String, Object> getMaps() {return maps;}public void setMaps(Map<String, Object> maps) {this.maps = maps;}public List<Object> getLists() {return lists;}public void setLists(List<Object> lists) {this.lists = lists;}public Dog getDog() {return dog;}public void setDog(Dog dog) {this.dog = dog;}@Overridepublic String toString() {return "Person{" +"name='" + name + '\'' +", age=" + age +", happy=" + happy +", bitth=" + bitth +", maps=" + maps +", lists=" + lists +", dog=" + dog +'}';}
}

name=基哥

package com.kuang;import com.kuang.pojo.Dog;
import com.kuang.pojo.Person;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;import java.util.Date;@SpringBootTest
class Springboot02ConfigApplicationTests {//自动装配，先根据容器里的组件类型匹配，在根据id，若没有匹配的，可以用@Qualifier(value="xxx");@Autowiredprivate Person dog;@Testvoid contextLoads() {System.out.println(dog);}}