首先建立一個簡單的實體類，我這裏以學生為例，並加上@Component和@ConfigurationProperties(prefix ="student")註解，其中prefix ="student"對應yml文件中的student

package com.example.demomybatis.model;

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

import java.util.Map;
@Component//將此javaBean加入到spring容器中
@ConfigurationProperties(prefix 
 
="student")
public class Student {
    private String name;
    private Map<String,Object> location;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Map<String, Object> getLocation() {
        return
 
 location;
    }

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

    @Override
    public String toString() {
        return "Student{" +
                "name=‘" + name + ‘\‘‘ +
                ", location=" + location +
                ‘}‘;
    }
}
 

然後在yml文件中對student屬性進行配置

student:
  name: yyy
  location: {province: 浙江}//map類型配置寫法

此外，要在pom.xml中加入依賴

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

springboot在yml配置文件中配置類的屬性筆記