Spring Boot配置--yml

配置文件

• Spring Boot使用一个全局的配置文件，配置文件名称是固定的application.yml
  key:空格value

YAML

yaml可以直接给实体类赋值
person类

package org.god.pojo;

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

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

@Component
@ConfigurationProperties(prefix = "person")
//将配置文件中配置的每一个属性的值映射到这个组件中
public class Person {
    private String name;
    private Integer age;
    private Boolean happy;
    private Date birth;
    private Map<String, Object>maps;
    private List<Object> lists;
    private Dog dog;

    public Person() {
    }

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

    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> 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;
    }

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

application配置文件

person:
  name: zlatan${random.uuid}
  age: 28
  happy: false
  birth: 1987/08/25
  maps: {k1: v1,k2: v2}
  hello: good
  lists:
    - code
    - soccer
  dog:
    name: ${person.hello:bady}-lulu
    age: 18

测试类

@SpringBootTest
class Springboot01HelloworldApplicationTests {

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

}

松散绑定:在YML中写last-name和lastName是一样的，-后边跟着的字母默认是大写。这就是松散绑定

JSR303校验

JSR303规范内置了一系列的约束注解，用于对数据进行校验，例如：

• @NotNull：确保字段不为null
• @Min和@Max：确保数字值在一定的范围内
• @Size：确保字符串的长度在指定的范围内
• @Email：确保字段是一个电子邮件地址
• @Pattern：确保字符串符合正则表达式