SpringBoot配置文件值获取

1、这里有不同类型属性的赋值，包括普通属性，对象，list，map

　　首先创建一个Person类包含一个Dog类，所以再创建一个Dog类

package com.athome.bean;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;

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

/**
 * 1、@ConfigurationProperties(prefix = "person") 说明这个类的属性要从配置文件里取值，并且名字是person,默认从全局配置文件里取值
 * 可以使用@PropertySource( value ="classpath:person.properties" )指定配置文件
 * 2、@Component：只有组件容器才能使用@ConfigurationProperties的功能
 */
@Component
@ConfigurationProperties(prefix = "person")
public class Person {

    private String lastName;
    private Integer age;
    private Date birth;
    private Boolean boss;
    private Dog dog;
    private List<String> lists;
    private Map<String,Object> maps;

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

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }

    public Boolean getBoss() {
        return boss;
    }

    public void setBoss(Boolean boss) {
        this.boss = boss;
    }

    public Dog getDog() {
        return dog;
    }

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

    public List<String> getLists() {
        return lists;
    }

    public void setLists(List<String> lists) {
        this.lists = lists;
    }

    public Map<String, Object> getMaps() {
        return maps;
    }

    public void setMaps(Map<String, Object> maps) {
        this.maps = maps;
    }
}

 

package com.athome.bean;

public class Dog {
    private String name;
    private Integer age;

    @Override
    public String toString() {
        return "Dog{" +
                "name='" + name + '\'' +
                ", 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;
    }
}
2、配置pom文件导入配置文件处理器，这样当在配置文件内配置属性的时候会有提示，只是注意，导入成功后需要重启一下项目

<!--配置文件处理器，绑定数据时有提示信息-->
<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-configuration-processor</artifactId>
   <optional>true</optional>
</dependency>
3、包括propertiest,yaml,两种方式
　　（1）properties文件按配置

#person配置
person.last-name=练习
person.age=24
person.birth=1995/06/10
person.boss=false
person.dog.name=大黑
person.dog.age=8
person.lists=list1,list2,list3
person.maps.key1=v1
person.maps.key2=v2

　（1）yaml文件按配置

person:
  last-name: 练习2
  age: 18
  birth: 1995/06/10
  boss: false
  dog:
      name: 大黑2
      age: 8
  lists:
      - content1
      - content2
  maps:
      key1: v1
      key2: v2

3、创建一个测试类可以测试一下，就成功了