yml文件的注意点，及使用yml配置文件的小例子

application.properties: k=v
application.yml: yaml aren’t markup language,不是一个标记文档
注意：1. k:空格v（或行内写法） 2.通过垂直对齐指定层次关系 3.默认可以不写引号，双引号中的转义字符会生效
application.properties:和application.yml两个配置文件可以相互代替，可以互补使用
例如：

（因为编辑器的原因，这里换为截图）

这里简单的写了一个测试小例子
student：

package com.example.demo.beans;

import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.Map;


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

@Component // 将JavaBean放入spring容器
@ConfigurationProperties(prefix = "student") // 将该类和yml文件中的赋值绑定起来
public class Student {
	private String name;
	private int age;
	private boolean sex;
	private Date birthday;
	private Map<String, Object> location;
	private String[] hobbies;
	private List<String> skills;
	private Pet pet;

	public String getName() {
		return name;
	}

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

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public boolean isSex() {
		return sex;
	}

	public void setSex(boolean sex) {
		this.sex = sex;
	}

	public Date getBirthday() {
		return birthday;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

	public Map<String, Object> getLocation() {
		return location;
	}

	public void setLocation(Map<String, Object> location) {
		this.location = location;
	}

	public String[] getHobbies() {
		return hobbies;
	}

	public void setHobbies(String[] hobbies) {
		this.hobbies = hobbies;
	}

	public List<String> getSkills() {
		return skills;
	}

	public void setSkills(List<String> skills) {
		this.skills = skills;
	}

	public Pet getPet() {
		return pet;
	}

	public void setPet(Pet pet) {
		this.pet = pet;
	}

	@Override
	public String toString() {
		return "Student [name=" + name + ", age=" + age + ", sex=" + sex + ", birthday=" + birthday + ", location="
				+ location + ", hobbies=" + Arrays.toString(hobbies) + ", skills=" + skills + ", pet=" + pet + "]";
	}

	
}

pet：

package com.example.demo.beans;

public class Pet {
	private String nickName;
	private String strain;

	public String getNickName() {
		return nickName;
	}

	public void setNickName(String nickName) {
		this.nickName = nickName;
	}

	public String getStrain() {
		return strain;
	}

	public void setStrain(String strain) {
		this.strain = strain;
	}

	@Override
	public String toString() {
		return "Pet [nickName=" + nickName + ", strain=" + strain + "]";
	}

}

application.yml

student: 
  name: zs
  age: 11
  sex: true
  birthday: 1990/01/01
  location: 
    province: 陕西
    city: 西安
    zone: 莲湖区
#    {province: 陕西,city: 西安,zone: 莲湖区}
  hobbies: [足球,篮球]
#    - 足球
#    - 篮球
  skills: [编程，金融]
#    - 编程
#    - 金融
  pet: {nickName: 旺财,strain: 哈士奇}
#    nickName: 旺财
#    strain: 哈士奇

测试类：

package com.example.demo;

import org.junit.jupiter.api.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import com.example.demo.beans.Student;



@RunWith(SpringRunner.class)
@SpringBootTest
class DemoApplicationTests {
	@Autowired
	Student student;

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

}