spring boot 配置文件及yml的使用

spring boot 配置文件：

默认会生成一个配置文件 src/main/resources 目录下的application.properties配置文件

作用：spring boot 自动配置（约定：8080）可以使用配置文件，对默认的配置进行修改

默认的全局配置文件：

application.properties : 语法： k=v

application.yml : YAML Ain't Markup Language (“YAML不是一种标记语言”的外语缩写)

xml 是一个标记语言

    <server>

          <port>8881</port>

          <path>/home/xxx</path>

    </server>

yml 语法实现:

    server:

              port: 8881

              path: /home/xxx

1、即：k:空格v

2、通过垂直对齐

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3、默认不需要加单/双引号，但如果值里面有转义符时，使用双引号。

yml各种类型赋值：

新建类People:

@ConfigurationProperties(prefix="people") : 为实例注入属性值

@Component
@ConfigurationProperties(prefix="people")
public class People {
	
	private String name;
	private int age;
	private int sex;
	private Date birthday;
	/*
	 * {province:湖南,city:郴州}
	 * */
	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 int getSex() {
		return sex;
	}

	public void setSex(int 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 Pet getPet() {
		return pet;
	}

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

	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;
	}

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

}

以及子类 Pet:

public class Pet {
	private String name;
	private String type;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getType() {
		return type;
	}
	public void setType(String type) {
		this.type = type;
	}
	@Override
	public String toString() {
		return "Pet [name=" + name + ", type=" + type + "]";
	}
}

application.yml 配置如下：

server:
  port: 8881
  
people: 
  name: feifei
  age: 19
  sex: 0
  birthday: 2010/01/05
  location: #{province: 湖南,city: 郴州}
    province: 湖南
    city: 郴州
  hobbies: [游泳,轮滑]
    #-游泳
    #-轮滑
  skills: [编程,金融]
    #-编程
    #-金融
  pet: 
    name: zuzu
    type: dog

测试类：

@RunWith(SpringRunner.class)
@SpringBootTest
public class FirstWarProjApplicationTests {
	@Autowired
	People people;

	@Test
	public void contextLoads() {
		System.out.print(people);
	}

}

执行 Run As -> JUnit Test，输出结果：

People [name=feifei, age=19, sex=0, birthday=Tue Jan 05 00:00:00 CST 2010, location={province=湖南, city=郴州}, hobbies=[[Ljava.lang.String;@9255c05, [Ljava.lang.String;@5da7cee2], skills=[编程, 金融], pet=Pet [name=zuzu, type=dog]]

spring boot 配置文件及yml的使用

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