SpringBoot 获取yml配置文件信息

1
2
3
4
5
6
7
8
9
10
11
12
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.16.22</version>
        </dependency>

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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
person:
  lastName: zhangsan
  age: 18
  boss: false
  brith: 2019/12/01
  maps: {k1: v1,k2: v2}
  lists:
    - list
    - wang
  dog:
     name: 小狗
     age: 12

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
/**
    将配置文件中配置的每一个属性的值,映射在这个组件中
    ConfigurationProperties:告诉spring boot将本类中的所有属性和配置文件中的相关配置进行绑定:
    prefix = "person "配置文件中哪个下面的所有属性进行--映射

    只有这个组件是容器中的组件，才能使用容器提供的ConfigurationProperties功能

    注意:默认读取全局配置文件
 */
@Component
@ConfigurationProperties(prefix = "person")
@Data
public class Person {
    private String lastName;
    private Integer age;
    private boolean boss;
    private Date brith;
    private Map<String,Object> maps;
    private List<String> lists;
    private Dog dog;
    
}

1
2
3
4
5
6
7
8
9
10
11
12
13
@RunWith(SpringRunner.class)
@SpringBootTest
public class SpringbootDempApplicationTests {

    @Autowired
    private Person person;

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

}

1
2
3
4
5
6
7
8
9
10
person.last-name=沈宁
person.age=22
person.boss=false
person.brith=2019/12/01
person.maps.k1=v1
person.maps.k2=v2
person.lists=a,b,c,d,e,e,p
person.dog.name=宗臣
person.dog.age=18

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
@Data
@Component
//@Validated //数据校验
public class Persons {
    //获取配置文件中的属性
    @Value("${person.last-name}")
    private String lastName;
    //直接给变量赋值
    @Value("#{11*2}")
    private Integer age;
    @Value("${person.boss}")
    private boolean boss;
    @Value("${person.brith}")
    private Date brith;
    // @Value 不支持
    private Map<String,Object> maps;
    @Value("${person.lists}")
    private List<String> lists;
    private Dog dog;
}

1
2
3
4
5
6
7
8
9
10
11
12
13
@PropertySource(value = {"classpath:person.properties"})
@Component
@ConfigurationProperties(prefix = "person")
@Data
public class Person {
    private String lastName;
    private Integer age;
    private boolean boss;
    private Date brith;
    private Map<String,Object> maps;
    private List<String> lists;
    private Dog dog;
}

1
2
3
4
5
6
7
8
9
10
11
12
13
/**
 Configuration:指定当前类是一个配置类
 Bean：将方法的返回值添加到容器中
 */
@Configuration
public class MyTest {

    @Bean
    public String testData(){
        String test="我是返回值";
        return test;
    }
}

1
2
3
4
5
6
7
8
9
10
11
12
13
#随机uuid
person.last-name==宁${random.uuid}
person.age=22
person.boss=false
person.brith=2019/12/01
person.maps.k1=v1
person.maps.k2=v2
person.lists=a,b,c,d,e,e,p

#获取之前配置信息的值，如果没有默认值
person.dog.name=${person.hello:sss}_宗臣
#person.dog.name=${person.last-name}_宗臣
person.dog.age=18

1
2
#激活配置文件
spring.profiles.active=dev

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
server:
  port: 8010
#这是代表激活dev块的配置,不配置自己8010
spring:
  profiles: dev
---
server:
  port: 8011
spring:
  profiles: dev
---
server:
     port: 8012

spring:
  profiles: prod