server: port: 8081 path: /hello

friends:lastName: zhangsanage: 20

friends: {lastName: zhangsan,age: 18}

pets:
‐ cat
‐ dog
‐ pig

pets: [cat,dog,pig]

person:lastName: helloage: 18boss: falsebirth: 2017/12/12maps: {k1: v1,k2: 12}lists:‐ lisi‐ zhaoliudog:name: 小狗age: 12

/*** 将配置文件中配置的每一个属性的值，映射到这个组件中* @ConfigurationProperties：告诉SpringBoot将本类中的所有属性和配置文件中相关的配置进行绑定；* prefix = "person"：配置文件中哪个下面的所有属性进行一一映射** 只有这个组件是容器中的组件，才能容器提供的@ConfigurationProperties功能；**/
@Component
@ConfigurationProperties(prefix = "person")
public class Person {private String lastName;private Integer age;private Boolean boss;private Date birth;private Map<String,Object> maps;private List<Object> lists;private Dog dog;}

<!‐‐导入配置文件处理器，配置文件进行绑定就会有提示‐‐>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring‐boot‐configuration‐processor</artifactId><optional>true</optional>
</dependency>

@Component
@ConfigurationProperties(prefix = "person")
@Validated
public class Person {/**
* <bean class="Person">
* <property name="lastName" value="字面量/${key}从环境变量、配置文件中获取值/#
{SpEL}"></property>
* <bean/>
*/
//lastName必须是邮箱格式
@Email
//@Value("${person.last‐name}")
private String lastName;
//@Value("#{11*2}")
private Integer age;
//@Value("true")
private Boolean boss;
private Date birth;
private Map<String,Object> maps;
private List<Object> lists;
private Dog dog;

@PropertySource(value = {"classpath:person.properties"})
@Component
@ConfigurationProperties(prefix = "person")
//@Validated
public class Person{}

@ImportResource(locations = {"classpath:beans.xml"})

/**
* @Configuration：指明当前类是一个配置类；就是来替代之前的Spring配置文件
*
* 在配置文件中用<bean><bean/>标签添加组件
*
*/
@Configuration
public class MyAppConfig {//将方法的返回值添加到容器中；容器中这个组件默认的id就是方法名
@Bean
public HelloService helloService02(){System.out.println("配置类@Bean给容器中添加组件了...");
return new HelloService();
}
}

${random.value}、${random.int}、${random.long}
${random.int(10)}、${random.int[1024,65536]}

person.last‐name=张三${random.uuid}
person.age=${random.int}
person.birth=2017/12/15
person.boss=false
person.maps.k1=v1
person.maps.k2=14
person.lists=a,b,c
person.dog.name=${person.hello:hello}_dog
person.dog.age=15

–file:./config/
–file:./
–classpath:/config/
–classpath:/

java -jar spring-boot-02-config-02-0.0.1-SNAPSHOT.jar --spring.config.location=G:/application.properties

java -jar spring-boot-02-config-02-0.0.1-SNAPSHOT.jar --server.port=8087 --server.context-path=/abc