一. 配置文件注入
person:
lastName: zhangsan
age: 20
boss: false
birth: 2017/12/12
maps: {k1:v1, k2:v2}
lists:
- lisi
- zhaoliu
dog:
name: 小狗
age: 12
在bean类标注@ConfigurationProperties,用来获取配置文件的值,绑定到bean的属性中
JavaBean:
package com.atguigu.springboot02config2.bean;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* 将配置文件中的每一个属性映射到这个组件中
* @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s使用容器提供的@ConfigurationPropertiesgon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;
@Override
public String toString() {
return "Person{" +
"lastName='" + lastName + '\'' +
", age=" + age +
", boss=" + boss +
", birth=" + birth +
", maps=" + maps +
", lists=" + lists +
", dog=" + dog +
'}';
}
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 boolean isBoss() {
return boss;
}
public void setBoss(boolean boss) {
this.boss = boss;
}
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;
}
}
二. @ConfigurationProperties
该注释只能是标注在容器组件的类,即标有@ConfigurationProperties的类,必须是Spring的组件(即标上@Component)
我们可以导入配置文件处理器,以后写配置文件就有提示了
<!--导入配置文件处理器,配置文件就会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>