配置文件

yaml可以直接给实体类赋值。

@ConfigurationProperties IDEA爆红

image-20201209105829278

导入依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
    <optional>true</optional>
</dependency>

@ConfigurationProperties

绑定yaml赋值

application.yaml

person:
  name: hejin${random.uuid}
  age: ${random.int}
  happy: false
  birth: 2020/12/09
  maps: {k1: v1,k2: v2,k3: v3}
  list:
    - code
    - music
    - girl
  dog:
    name: ${person.hello:hello}_旺旺
    age: 3

Person.java

/**
 * @Description TODO
 * @Author Administrator
 * @Date 2020/12/9 10:41
 */
@Component
@ConfigurationProperties(prefix = "person")
public class Person {
    
    private String name;
    private Integer age;
    private Boolean happy;
    private Date birth;
    private Map<String,Object> maps;
    private List<Object> list;
    private Dog dog;

    public Person(String name, Integer age, Boolean happy, Date birth, Map<String, Object> maps, List<Object> list, Dog dog) {
        this.name = name;
        this.age = age;
        this.happy = happy;
        this.birth = birth;
        this.maps = maps;
        this.list = list;
        this.dog = dog;
    }

    public Person() {
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", happy=" + happy +
                ", birth=" + birth +
                ", maps=" + maps +
                ", list=" + list +
                ", 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 getHappy() {
        return happy;
    }

    public void setHappy(Boolean happy) {
        this.happy = happy;
    }

    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> getList() {
        return list;
    }

    public void setList(List<Object> list) {
        this.list = list;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }
}

测试

@SpringBootTest
class Springboot02ConfigApplicationTests {

    @Autowired
    private Dog dog;
    @Autowired
    private Person person;

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

结果

Person{name='hejin24d6439b-6fa0-4aec-b3a5-b6ba2b67699e', age=-78022062, happy=false, birth=Wed Dec 09 00:00:00 CST 2020, maps={k1=v1, k2=v2, k3=v3}, list=[code, music, girl], dog=Dog{name='hello_旺旺', age=3}}

2020-12-09 11:22:12.497  INFO 11948 --- [extShutdownHook] o.s.s.concurrent.ThreadPoolTaskExecutor  : Shutting down ExecutorService 'applicationTaskExecutor'

Process finished with exit code 0

@PropertySource

加载自定义properties配置文件

hejin.properties

name=哔哩哔哩

Person.java

/**
 * @Description TODO
 * @Author Administrator
 * @Date 2020/12/9 10:41
 */
@Component
// 加载指定的配置文件
@PropertySource(value = "classpath:hejin.properties")
public class Person {
    // SPEL取出配置文件的值
    @Value("${name}")
    private String name;
    
    private Integer age;
    private Boolean happy;
    private Date birth;
    private Map<String,Object> maps;
    private List<Object> list;
    private Dog dog;

    public Person(String name, Integer age, Boolean happy, Date birth, Map<String, Object> maps, List<Object> list, Dog dog) {
        this.name = name;
        this.age = age;
        this.happy = happy;
        this.birth = birth;
        this.maps = maps;
        this.list = list;
        this.dog = dog;
    }

    public Person() {
    }

    @Override
    public String toString() {
        return "Person{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", happy=" + happy +
                ", birth=" + birth +
                ", maps=" + maps +
                ", list=" + list +
                ", 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 getHappy() {
        return happy;
    }

    public void setHappy(Boolean happy) {
        this.happy = happy;
    }

    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> getList() {
        return list;
    }

    public void setList(List<Object> list) {
        this.list = list;
    }

    public Dog getDog() {
        return dog;
    }

    public void setDog(Dog dog) {
        this.dog = dog;
    }
}