Spring Boot配置文件yml

spring boot中的后缀为yml的配置文件
首先为了方便讲解我们需要先创建两个类分别为Person和Dog

public class Dog {
    private String name;
    private Integer age;

    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;
    }

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

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

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

/**
 * 配置文件中配置的每一个属性的值映射到组件中
 * prefix映射
 */
@ConfigurationProperties(prefix = "person")
/**
 * @Component注解声明将这个组件添加到容器才可以被使用
 *
 * “当这个组件是容器中的组件时，才能使用容器提供的@ConfigurationProperties功能”
 */
@Component
public class Person {
    private String name;
    private Integer age;
    private Boolean boss;
    private Date birth;

    private Map<String,Object> maps;
    private List<Object> lists;
    private Dog dog;

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", boss=" + boss +
                ", birth=" + birth +
                ", maps=" + maps +
                ", lists=" + lists +
                ", 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 getBoss() {
        return boss;
    }

    public void setBoss(Boolean boss) {
        this.boss = boss;
    }

    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }

    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;
    }
}

创建完后，在配置文件yml中，配置相关信息

person:
  name: zhangsan
  age: 18
  boss: false
  birth: 2017/12/12
  maps: {k1: v1,k2: 12}
  lists:
    - lisi
    - zhaoliu
  dog:
    name: xiaogou
    age: 12

再在测试一下

import com.example.bootopen.Bean.Person;
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;

@RunWith(SpringRunner.class)
@SpringBootTest
class BootopenApplicationTests {
    @Autowired
    Person person;
    @Test
    void contextLoads() {
        System.out.println(person);
    }

}

在下图可以清楚看到person类的信息已经被输出